Bhagya

Punjab State Board PSEB 7th Class English Book Solutions English Vocabulary Comparison using ‘as’ Exercise Questions and Answers, Notes.

PSEB 7th Class English Vocabulary Comparison using ‘as’

एक जैसे गुणों वाली दो वस्तुओं को तुलना के लिए as………. as का प्रयोग किया जाता है। किसी गुणधर्म को Highlight करने के लिए उसकी तुलना उसी गुणधर्म वाली किसी भी अन्य वस्तु से की जा सकती है।

1. as good as gold
2. as happy as a clown
3. as sharp as a razor
4. as big as elephant

5. as heavy as lead
6. as beautiful as moon
7. as gentle as lamb
8. as silent as dea$
9. as small as ant
10. as thin as paper
11. as white as snow
12. as tall as giraffe
13. as clever as fox
14. as costly as diamond.
15. as proud as peacock
16. as hot as sun
17. as pretty as flower
18. as sweet as honey
19. as red as rose
20. as strong as iron
21. as innocent as lamb
22. as clever as fox/monkey/owl/crow
23. as wild as lion
24. as soft as silk
25. as light as cotton
26. as black as night
27. as wise as crow
28. as brave as lion.
29. as sure as death
30. as deep as ocean
31. as cold as ice
32. as black as coal
33. as busy as a bee
34. as clear as bell
35. as common as dirt
36. as deaf as a post

37. as easy as A.B.C.
38. as large as life
39. as light as air
40. as straight as an arrow

Punjab State Board PSEB 7th Class English Book Solutions English Vocabulary Synonyms Exercise Questions and Answers, Notes.

PSEB 7th Class English Vocabulary Synonyms

A Synonyms is a word which is same in meaning (एक समान अर्थ) to another word; as-

Word – Synonym

auspicious – happy/lucky
alive – lively
along – side by side
aim – objective
beautiful – pretty

bow – to bend
blaze – fire
believe – trust
banks – shores
courtier – a member of a royal court
comer – end point of some place
crack – rift
complete – full
cultural – traditional
celebrate – to hold make merry
deep – far-down
deities – gods/goddesses
diamond – a precious stone
dawn – morning
expect – hope
energy – power
famous – well-known
false – untrue
fright – panic, threaten
fervous – zeal
glance – look
gentle – kind
grey – brown
handsome – smart
honest – truthful
immobile – stationary
mounds – heaps/piles
nice – fine
overcome – win over
peace – calmness
patience – toleration
prepared – ready
paddy – rice crop
real – genuine
strong – tough
slumber – sound sleep
sight – scene
slightly – a little
stout – well built/strong
silent – quiet, motionless

smooth – plain
stuck – got busy
to pass – to move onward
tiny – little
together – along with
tense – nervous
trade – business
tribal – related to a tribe
ugly – bad looking
woods – jungle

Punjab State Board PSEB 7th Class English Book Solutions English Vocabulary Antonyms Exercise Questions and Answers, Notes.

PSEB 7th Class English Vocabulary Antonyms

An Antonym is a word which is opposite in meaning to another word; as

Word – Antonym

departure – arrival
ugly – beautiful
after – before

white – black
big – small
break – make
begin – end
buy – sell
complete – incomplete
clean – dirty
come – go
cruel – kind
cool – warm
catch – throw
care – neglect
calm – noisy
dawn – dusk
day – night
earth – sky
east – west
friend – enemy
front – behind
first – last
found – lost
give – take
good – bad
hate – love
here – there
hide – seek
happy – sad
hot – cold
in – out
late – early
love – hate
long – short
land – water
morning – evening
many – few
now – then
near – far
new – old
open – close
obey – disobey
proud – humble
push – pull
pretty – ugly
rich – poor
right – wrong/left
some – many
sit – stand
soon – late

tall – short
top – bottom
up – down
virtue – vice
wild – pet/domestic
win – lose
weak – strong

Punjab State Board PSEB 7th Class English Book Solutions English Grammar Verb (Conjugation) Exercise Questions and Answers, Notes.

PSEB 7th Class English Grammar Verb (Conjugation)

वे शब्द जो किसी क्रिया (action) को व्यकत करते हैं, Verbs कहलाते हैं। Verbs दो प्रकार के होते हैं- Main Verbs (मुख्य क्रियाएं) तथा helping verbs (सहायक क्रियाएं)

नीचे लिखे वाक्यों को पढ़िए:

1. Dev is sleeping.
2. Geeta made a doll.
3. They laughed.
4. The girls are going out.
5. Our team will play a match.

ऊपर दिए गए वाक्यों में sleeping, made, laughed, going तथा play मुख्य क्रियाएं (Main verbs) है। परन्तु is, are, will सहायक क्रियाएं (Helping Verbs) हैं। वे मुख्य क्रियाओं की सहायता करती हैं।
सहायक क्रियाएं निम्नलिखित हैं:
Is, am, are, was, were, has, have, had, do, does, did, will, would, shall, should, can, could, may, might, must, ought to, need, dare, used to.

Exercises

I. Pick out the helping verbs in the following sentences.

1. I have found a bag.
2. Where were you going yesterday ?
3. I am learning to swim.
4. He has lost his book.
5. You may go out now.
6. I will bring an orange for you.
7. They are cutting the hedge.
8. Where do you live?
9. I shall give you some money.
10. You can go now.
Hints:
1. have
2. were
3. am
4. has
5. may
6. will
7. are
8. do
9. shall
10. can.

II. Fill in the blanks with suitable helping verbs:

1. The teacher…………. not punish the whole class.
2. We………….go for a picnic tomorrow.
3. Where………….. the books kept ?
4. Who………….stolen my money?
5. Which games…………played in school ?
6. The winner…………..receive a prize from the chief guest.
7. …………you seen the Taj Mahal ?
8. When…………..your tutor come to teach you ?
9. Ravi…………go to London or America for his holidays.
10. ………….I help you with your problems ?

Hints:
1. did
2. shall
3. were
4. has
5. are
6. will
7. Have
8. does
9. will
10. May.

Punjab State Board PSEB 7th Class English Book Solutions English Grammar Translation Exercise Questions and Answers, Notes.

PSEB 7th Class English Grammar Translation

Present Indefinite Tense

1. मैं स्कूल जाता हूँ। – I go to school.
2. बच्चे खेलते हैं। – Children play.
3. माता जी खाना बनाते हैं। – Mother cooks food.
4. लड़के खेलते हैं। – Boys play.
5. मोहित दांत साफ़ करता है। – Mohit brushes his teeth.

Present Indefinite Tense (Interrogative)

1. क्या आप स्कूल जाते हैं ? – Do you go to school ?
2. आप क्या चाहते हो ? – What do you want ?
3. आप देर से क्यों आते हो ? – Why do you come late ?
4. आप कहाँ रहते हो। – Where do you live?
5. आपका स्कूल कब लगता है ? – When does your school start ?

Present Indefinite Tense (Negative)

1. रोहित झूठ नहीं बोलता है। – Rohit does not tell lies.
2. मैं खाना बेकार नहीं करता हूँ। – I don’t waste food.
3. आप गाना नहीं गाते हो। – You do not sing a song.
4. समय किसी के लिए भी नहीं रूकता है। – Time does not wait for anyone.
5. हम स्कूल लेट नहीं जाते। – We do not go to school late.

Past Indefinite Tense

1. मैं स्कूल गया। – I went to school.
2. आपने खाना खाया। – You took food.
3. मेरी माता जी ने भोजन बनाया। – My mother cooked food.
4. मैंने कल पाठ याद किया। – I learnt my lesson yesterday.
5. चपरासी ने घंटी बजाई। – The peon rang the bell.

Past Indefinite Tense (Interrogative)

1. क्या आप कल स्कूल गए थे ? – Did you go to school yesterday ?
2. आप कल कितने बजे बाज़ार गए थे ? – At what time did you go to the market yesterday ?
3. आप कल देर से क्यों आए ? – Why did you come late yesterday ?
4. उन्होंने मेरी बात क्यों नहीं सुनी ? – Why did they not listen to me ?
5. उषा ने खाना कब बनाया। – When did Usha cook food ?

Past Indefinite Tense (Negative)

1. मैंने झूठ नहीं बोला। – I did not tell a lie.
2. शरन ने दवाई नहीं ली। – Sharan did not take medicine.
3. रचना ने कसरत नहीं की। – Rachna did not take excercise.
4. भारत ने मन नहीं हारा। – Bharat did not lose heart.
5. चपरासी ने घंटी नहीं बजाई। – The poen did not ring the bell.

Future Indefinite Tense

1. कल बरसात होगी। – It will rain tomorrow.
2. मैं कल स्कूल आऊँगा। – I will come to school tomorrow.
3. वह कल दिल्ली जाएगा। – He will go to Delhi tomorrow.
4. आप कल रमेश से मिलोगे। – You will meet Ramesh tomorrow.
5. रमन कल मुझे ई-मेल करेगा। – Raman will send me an e-mail tomorrow.

Future Indefinite Tense (Negative)

1. बच्चे झूठ नहीं बोलेंगे। – The children will not tell lies.
2. पंछी गीत नहीं गाएंगे। – The birds will not sing songs.
3. नांव समुद्र में नहीं डूबेगी। – The boat will not sink in the sea.
4. आज बरसात नहीं होगी। – It will not rain today.
5. आप स्कूल से छुट्टी नहीं करोगे। – You will not take a leave from the school.

Future Indefinite Tense (Interrogative)

1. क्या आप कल मुझे मिलेगें ? – Will you meet me tomorrow ?
2. क्या चित्रकार चित्र बनाएगा ? – Will the painter paint a picture ?
3. क्या वह गाना गाएंगे ? – Will they sing a song ?
4. आप स्कूल कब आएंगे ? – When will you come to school ?
5. आप मेरा काम क्यों नहीं करोगे ? -Why will you not do my work ?

Present Continuous Tense

1. बच्चे पढ़ रहे हैं। – Children are reading.
2. अंजू कार चला रही है। – Anju is driving a car.
3. आपको पसीना आ रहा है। – You are perspiring/sweating.
4. पानी बहुत तेज़ बह रहा है। – Water is running very fast.
5. अध्यापक पढ़ रहा है। – The teacher is teaching.

Present Continuous Tense (Interrogative)

1. क्या पानी तेज़ी से बह रहा है ? – Is the water running fast ?
2. लोग वृक्षों की छाया क्यों ढूंढ़ रहे हैं ? – Why are the people looking for the shade of the trees. ?
3. क्या रानी निशी की मदद कर रही है ? – Is Rani helping Nishi ?
4. मोहन घर कब जा रहा है ? – When is Mohan going home ?
5. उसकी माता कौन-सा खाना बना रही है ? – Which food is her mother cooking ?

Present Continuous Tense (Negative)

1. छोटे बच्चे खाना नहीं खा रहे हैं। – Little children are not eating food.
2. रोहित गाड़ी तेज़ नहीं चला रहा है। – Rohit is not driving fast.
3. सीता अपना काम ठीक नहीं कर रही है। – Sita is not doing her work.
4. बरसात नहीं हो रही है। – It is not raining.
5. मकैनिक कार ठीक नहीं कर रहा है। – Mechanic is not repairing the car.

Past Continuous Tense

1. वह सफलता के लिए प्रार्थना कर रहा था। – He was praying for success.
2. मेरा भाई स्कूल जा रहा था। – My brother was going to school.
3. मां पैसे बचा रही थी। – Mother was saving money.
4. सिमर नई किताब लिख रही थी। – Simar was writing a new book.
5. बरसात हो रही थी। – It was raining.

Past Continuous Tense (Negative)

1. साइकिल तेज़ नहीं चल रही थी। – The bicycle was not running fast.
2. पंछी उड़ नहीं रहे थे। – The birds were not flying.
3. मेरी सहेली गाना नहीं गा रही थी। – My friend was not singing a song.
4. मेरी माता जी गुस्सा नहीं कर रही थी। – My mother was not angry.
5. बच्चे शोर नहीं मचा रहे थे। – The Children were not making a noise.

Past Continuous Tense (Interrogative)

1. क्या सभी अपना पाठ याद कर रहे थे ? – Were all learning their lesson ?
2. पारस अपना जन्मदिन कैसे मना रहा था ? – How was Paras celebrating his birthday ?
3. लेखक कौन सी किताब लिख रहा था ? – Which book was the writer writing ?
4. राकेश घर कब जा रहा होगा ? – When was Rakesh going home ?
5. बरसात कब हो रही थी ? – When was it raining ?

Future Continuous Tense

1. मैं कल बस से दिल्ली जा रहा होगा। – I will be going to Delhi by bus tomorrow.
2. मेरे माता जी इस वक्त खाना बना रहे होंगे। – My mother will be cooking food at this time.
3. प्रीति गाना गा रही होगी। – Preeti will be singing a song.
4. रचित फिल्म देख रहा होगा। – Rachit will be watching a movie.
5. कल मनजीत पेपर दे रहा होगा। – Manjeet will be taking a test tomorrow.

Future Continuous Tense (Negative)

1. अगले सप्ताह किसान फ़सल नहीं काट रहा होगा। – The farmer will not be reaping the crop next week.
2. परीक्षा के दौरान हम टी०वी० नहीं देख रहे होंगे। – We were not watching T.V. during the examinations.
3. मुस्कान शाम के समय चाय नहीं पी रही होगी। – Muskan will not be taking tea in the evening.
4. वह घर नहीं जा रही होगी। – She will not be going home.
5. बच्चा इस समय सो नहीं रहा होगा। – The child will not be sleeping by this time.

Future Continuous Tense (Interrogative)

1. गुरमुख शाम का क्या कर रहा होगा ? – What will he be doing in the evening ?
2. क्या कल सुबह सोनू पढ़ रहा होगा ? – Will Sonu be reading in the morning tomorrow ?
3. क्या नरेश नई किताब खरीद रहा होगा ? – Will Naresh be buying new book ?
4. क्या सोनू क्रिकेट खेल रहा होगा ? – Will Sonu playing cricket ?
5. निशी शाम को घर कैसे जा रही होगी ? – How will Nishi going home in the evening ?

Other Sentences

1. मेरा बात सुनो। – Listen to me.
2. विनम्रता से बात करो। – Speak gently.
3. अपनी किताब मुझे दो। – Give me your book.
4. एक-दूसरे को धक्का ना मारो। – Don’t push one another.
5. आपस में मत झगड़ो। – Don’t quarrel among yourselves.
6. वह आदमी अमीर है। – That man is rich.
7. चाय गर्म है। – Tea is hot.
8. वह घर सुन्दर है। – That house is beautiful.
9. वह अच्छा अध्यापक है। – He is a good teacher.
10. धरती सूर्य के इर्द-गिर्द घूमती है। – The earth moves around the Sun.

Punjab State Board PSEB 8th Class Maths Book Solutions Chapter 14 Factorization Ex 14.3 Textbook Exercise Questions and Answers.

PSEB Solutions for Class 8 Maths Chapter 14 Factorization Ex 14.3

1. Carry out the following divisions:

Question (i)
28x⁴ ÷ 56x
Solution:

Question (ii)
– 36y³ ÷ 9y²
Solution:

Question (iii)
66pq²r³ ÷ 11qr²
Solution:

Question (iv)
34x³y³z³ ÷ 51 xy²z³
Solution:

Question (v)
12a⁸b⁸ ÷ (- 6a⁶b⁴)
Solution:

2. Divide the given polynomial by the given monomial:

Question (i)
(5x² – 6x) ÷ 3x
Solution:

Question (ii)
(3y⁸ – 4y⁶ + 5y⁴) ÷ y⁴
Solution:

Question (iii)
8 (x³y²z² + x²y³z² ÷ 4 x²y²z²)
Solution:

Question (iv)
(x³ + 2x² + 3x) ÷ 2x
Solution:

Question (v)
(P³ q⁶ – p⁶ q³) ÷ p³ q³
Solution:

3. Work out the following divisions:

Question (i)
(10x – 25) ÷ 5
Solution:
= \(\frac{10 x-25}{5}\)
= \(\frac{5(2 x-5)}{5}\)
= 2x – 5

Question (ii)
(10x-25) ÷ (2x – 5)
Solution:
= \(\frac{10 x-25}{2 x-5}\)
= \(\frac{5(2 x-5)}{(2 x-5)}\)
= 5

Question (iii)
10y (6y + 21) ÷ 5 (2y + 7)
Solution:
= \(\frac{10 y(6 y+21)}{5(2 y+7)}\)
= \(\frac{2 \times 5 \times y \times 3 \times(2 y+7)}{5(2 y+7)}\)
= 2 × y × 3
= 6y

Question (iv)
9x²y²(3z – 24) ÷ 27xy (z – 8)
Solution:

Question (v)
96 abc (3a – 12) (5b – 30) ÷ 144 (a – 4)(b – 6)
Solution:
= \(\frac{96 a b c(3 a-12)(5 b-30)}{144(a-4)(b-6)}\)
= \(\frac{2 \times 2 \times 2 \times 2 \times 2 \times 3 \times a \times b \times c \times 3 \times(a-4) \times 5 \times(b-6)}{2 \times 2 \times 2 \times 2 \times 3 \times 3 \times(a-4) \times(b-6)}\)
= 2 × 5 × a × b × c
= 10 abc

4. Divide as directed:

Question (i)
5 (2x + 1) (3x + 5) ÷ (2x + 1)
Solution:
= \(\frac{5(2 x+1)(3 x+5)}{(2 x+1)}\)
= \(\frac{5 \times(3 x+5)}{1}\)
= 5(3x + 5)

Question (ii)
26xy (x + 5) (y – 4) ÷ 13x (y – 4)
Solution:
= \(\frac{26 x y(x+5)(y-4)}{13 x(y-4)}\)
= \(\frac{2 \times 13 \times x \times y(x+5)(y-4)}{13 x(y-4)}\)
= 2y(x + 5)

Question (iii)
52pqr (p + q) (q + r) (r + p) ÷ 104pq (q + r) (r + p)
Solution:
= \(\frac{52 p q r(p+q)(q+r)(r+p)}{104 p q(q+r)(r+p)}\)
= \(\frac{52 \times p \times q \times r \times(p+q)(q+r)(r+p)}{2 \times 52 \times p \times q \times(q+r)(r+p)}\)
= \(\frac{r \times(p+q)}{2}\)
= \(\frac {1}{2}\)r (p + q)

Question (iv)
20 (y + 4) (y² + 5y + 3) ÷ 5 (y + 4)
Solution:
= \(\frac{20(y+4)\left(y^{2}+5 y+3\right)}{5(y+4)}\)
= \(\frac{2 \times 2 \times 5 \times(y+4)\left(y^{2}+5 y+3\right)}{5(y+4)}\)
= 2 × 2 × (y² + 5y + 3)
= 4(y² + 5y + 3)

Question (v)
x (x + 1) (x + 2) (x + 3) ÷ x (x + 1)
Solution:
= \(\frac{x(x+1)(x+2)(x+3)}{x(x+1)}\)
= \(\frac{(x+2)(x+3)}{1}\)
= (x + 2)(x + 3)

5. Factorise the expressions and divide them as directed:

Question (i)
(y² + 7y + 10) ÷ (y + 5)
Solution:
First we factorise
y² + 7y + 10
= y² + 5y + 2y + 10
= y (y + 5) + 2 (y + 5)
= (y + 5) (y + 2)
∴ (y² + 7y + 10) ÷ (y + 5)
= \(\frac{(y+5)(y+2)}{(y+5)}\)
= y + 2

Question (ii)
(m² – 14m – 32) ÷ (m + 2)
Solution:
First we factorise
m² – 14m – 32
= m² – 16m + 2m – 32
= m (m – 16) + 2 (m – 16)
= (m – 16) (m + 2)
∴ (m² – 14m – 32) ÷ (m + 2)
= \(\frac{(m-16)(m+2)}{m+2}\)
= m – 16

Question (iii)
(5p² – 25p + 20) ÷ (p – 1)
Solution:
First we factorise
5p² – 25p + 20
= 5 (p² – 5p + 4)
= 5 (p² – 4p – p + 4)
= 5 [p (p – 4) – 1 (p – 4)]
= 5 (p – 4) (p – 1)
∴ (5p² – 25p + 20) ÷ (p – 1)
= \(\frac{5(p-4)(p-1)}{p-1}\)
= 5 (p – 4)

Question (iv)
4yz (z² + 6z – 16) ÷ 2y (z + 8)
Solution:
= \(\frac{4 y z\left(z^{2}+6 z-16\right)}{2 y(z+8)}\)
= \(\frac{2 z\left(z^{2}+6 z-16\right)}{z+8}\)
Now, factorise
z² + 6z – 16
= z² + 8z – 2z – 16
= z (z + 8) – 2 (z + 8)
= (z + 8) (z – 2)
∴ 4yz (z² + 6z – 16) ÷ 2y (z + 8)
= \(\frac{2 z(z+8)(z-2)}{z+8}\)
= 2z (z – 2)

Question (v)
5pq (p² – q²) ÷ 2p(p + q)
Solution:

Question (vi)
12xy (9x² – 16y²) ÷ 4xy (3x + 4y)
Solution:
= \(\frac{12 x y\left(9 x^{2}-16 y^{2}\right)}{4 x y(3 x+4 y)}\)
= \(\frac{12 x y(3 x-4 y)(3 x+4 y)}{4 x y(3 x+4 y)}\)
= 3 (3x – 4y)

Question (vii)
39y³ (50y² – 98) ÷ 26y² (5y + 7)
Solution:

Punjab State Board PSEB 8th Class Maths Book Solutions Chapter 14 Factorization Ex 14.2 Textbook Exercise Questions and Answers.

PSEB Solutions for Class 8 Maths Chapter 14 Factorization Ex 14.2

1. Factorise the following expressions:

Question (i)
a² + 8a + 16
Solution:
= (a)² + 2 (a)(4) + (4)²
= (a + 4)²

Question (ii)
p² – 10p + 25
Solution:
= (p)² – 2 (p)(5) + (5)²
= (P – 5)²

Question (iii)
25m² + 30m + 9
Solution:
= (5m)² + 2 (5m) (3) + (3)²
= (5m + 3)²

Question (iv)
49y² + 84yz + 36z²
Solution:
= (7y)² + 2 (7y)(6z) + (6z)²
= (7y + 6z)²

Question (v)
4x² – 8x + 4
Solution:
= 4(x² – 2x + 1)
= 4 [(x)² – 2 (x)(1) + (1)²]
= 4 (x – 1)²

Question (vi)
121b² – 88bc + 16c²
Solution:
= (11b)² – 2 (11b)(4c) + (4c)²
= (11b – 4c)²

Question (vii)
(l + m)² – 4lm [Hint: Expand (1 + m)² first]
Solution:
= l² + 2lm + m² – 4lm
= l² + 2lm – 4lm + m²
= l² – 2lm + m²
= (l)² – 2 (l) (m) + (m)²
= (l – m)²

Question (viii)
a⁴ + 2a²b² + b⁴
Solution:
= (a²)² + 2 (a²)(b²) + (b²)²
= (a² + b²)²

2. Factorise:

Question (i)
4p² – 9q²
Solution:
= (2p)² – (3q)²
= (2p – 3q) (2p + 3q)

Question (ii)
63a² – 112b²
Solution:
= 7 (9a² – 16b²)
= 7 [(3a)² -(4b)²]
= 7 (3a – 4b) (3a + 4b)

Question (iii)
49x² – 36
Solution:
= (7x)² – (6)²
= (7x – 6) (7x + 6)

Question (iv)
16x⁵ – 144x³
Solution:
= 16x³(x² – 9)
= 16x³ [(x)² – (3)²]
= 16x³ (x-3) (x + 3)

Question (v)
(l + m)² – (l – m)²
Solution:
=[(l + m) + (l – m)] [(l + m) – (l – m)]
= [l + m + l – m] [l + m – l + m]
= (2l) (2m)
= 4lm

Question (vi)
9x²y² – 16
Solution:
= (3xy)² – (4)²
= (3xy – 4) (3xy + 4)

Question (vii)
(x² – 2xy + y²) – z²
Solution:
= (x – y)² – (z)²
= [(x – y) – z] [(x – y) + z]
= (x – y – z) (x – y + z)

Question (viii)
25a² – 4b² + 28bc – 49c²
Solution:
= (25a²) – (4b² – 28bc + 49c²)
= (5a)² – (2b – 7c)²
= [(5a) – (2b – 7c)] [(5a) + (2b – 7c)]
= (5a – 2b + 7c) (5a + 2b – 7c)

3. Factorise the expressions:

Question (i)
ax² + bx
Solution:
= x (ax + b)

Question (ii)
7p² + 21q²
Solution:
= 7 (p² + 3q²)

Question (iii)
2x³ + 2xy² + 2xz²
Solution:
= 2x(x² + y² + z²)

Question (iv)
am² + bm² + bn² + an²
Solution:
= am² + bm² + an² + bn²
= m² (a + b) + n²(a + b)
= (a + b) (m² + n²)

Question (v)
(lm + l) + m + 1
Solution:
= l (m + 1) + 1 (m + 1)
= (m + 1) (l + 1)

Question (vi)
y(y + z) + 9(y + z)
Solution:
= (y + z)(y + 9)

Question (vii)
5y² – 20y – 8z + 2yz
Solution:
= 5y² – 20y + 2yz – 8z
= 5y (y – 4) + 2z (y – 4)
= (y- 4) (5y + 2z)

Question (viii)
10ab + 4a + 5b + 2
Solution:
= 2a (5b + 2) + 1 (5b + 2)
= (5b + 2) (2a + 1)

Question (ix)
6xy – 4y + 6 – 9x
Solution:
= 6xy – 4y – 9x + 6
= 2y (3x-2)-3(3x-2)
= (3x-2) (2y – 3)

4. Factorise:

Question (i)
a⁴ – b⁴
Solution:
= (a²)² – (b²)²
= (a² – b²) (a² + b²)
= ((a)² – (b²)] (a² + b²)
= (a – b) (a + b) (a² + b²)

Question (ii)
p⁴ – 81
Solution:
= (p²)² – (9)²
= (p² – 9) (p² + 9)
= ((p)² – (3)²] (p² + 9)
= (p – 3)(p + 3)(p² + 9)

Question (iii)
x⁴ – (y + z)⁴
Solution:
= (x²)² – (a²)² (∵ y + z = a)
= (x² – a²) (x² + a²)
= (x – a) (x + a) (x² + a²)
= [x – (y + z)] [x + (y + z)] [x² + (y + z)²] (∵ a = y + z)
= (x – y – z) (x + y + z) [x² + (y + z)²]

Question (iv)
x⁴ – (x – z)⁴
Solution:
= (x²)² – [(x – z)²]²
= [x² – (x – z)²] [x² + (x – z)²]
= [x² – (x² – 2xz + z²)] [x² + (x² – 2xz + z²)]
= (x² – x² + 2xz – z²) (x² + x² – 2xz + z²)
= (2xz – z²) (2x² – 2xz + z²)
= z (2x – z) (2x² – 2xz + z²)

Question (v)
a⁴ – 2a²b² + b⁴
Solution:
= (a²)² – 2(a²)(b²) + (b²)²
= (a² – b²)²
= (a² – b²) (a² – b²)
= (a – b) (a + b) (a – b) (a + b)

5. Factorise the following expressions:

Question (i)
p² + 6p + 8
Solution:
= p² + 6p + 9 – 1
= (p² + 6p + 9) – (1)
= (p + 3)² – (1)²
= (p + 3 + 1) (p + 3 – 1)
= (P + 4) (p + 2)
Here, last term is 8.
∴ 9 – 1 = 8.

OR
p² + 6p + 8
Here, ab = 8 and a + b = 6
On solving equations, a = 4, b = 2
Now, p² + 6p + 8
= p² + 4p + 2p + 8
= p (p + 4) + 2 (p + 4)
= (p + 4) (p + 2)

Question (ii)
q² – 10q + 21
Solution:
= q² – 10q + 25 – 4
= (q² – 10q + 25) – (4)
= (q – 5)² – (2)²
= (q – 5 + 2) (q – 5 – 2)
= (q – 3) (q – 7)
Here, last term is 21.
∴ 25 – 4 = 21.

OR
q² – 10q + 21
Here, ab = 21 and a + b = (- 10)
Possible values of a = 7 or (-7)
b = 3 or (- 3)
Let us check, 7 + 3 = 10 ≠ (- 10)
∴ a = – 7, b = – 3
Now, q² – 10q + 21
= q² – 7q – 3q + 21
= q (q – 7) – 3 (q – 7)
= (q – 7) (q – 3)

Question (iii)
p² + 6p – 16
Solution:
= p² + 6p + 9 – 25
= (P² + 6p + 9) – (25)
= (p + 3)² – (5)²
= (p + 3 – 5) (p + 3 + 5)
= (p – 2) (p + 8)
Here, last term is (-16).
∴ (-25) + 9 = (-16)

OR

p² + 6p – 16
Here, ab = – 16 and a + b = 6
Possible values of a = 8 or (-8) b = 2 or (-2)
Let us check, 8 + 2 = 10 ≠ 6
(- 8) + 2 = (-6) ≠ 6
8 + (-2) = 8 – 2 = 6
Now, p² + 6p – 16
= p² + 8p – 2p – 16
= P (P + 8) – 2 (p + 8)
= (p + 8) (p – 2)

Punjab State Board PSEB 8th Class Maths Book Solutions Chapter 14 Factorization Ex 14.1 Textbook Exercise Questions and Answers.

PSEB Solutions for Class 8 Maths Chapter 14 Factorization Ex 14.1

1. Find the common factors of the given terms:

Question (i)
12x, 36
Solution:
12x = 2 × 2 × 3 × x
36 = 2 × 2 × 3 × 3
∴ Common factors of 12x and 36 = 2 × 2 × 3
= 12

Question (ii)
2y, 22xy
Solution:
2y = 2 xy
22xy = 2 × 11 × x × y
∴ Common factors of 2y and 22xy
= 2 × y = 2y

Question (iii)
14pq, 28p²q²
Solution:
14pq = 2 × 7 × p × q
28p²q² = 2 × 2 × 7 × p × p × q × q
∴ Common factors of 14pq and 28p²q²
= 2 × 7 × p × q = 14pq

Question (iv)
2x, 3x², 4
Solution:
2x = 2 × x
3x² = 3 × x × x
4 = 2 × 2
∴ Common factors of 2x, 3x² and 4 = 1 [Note: 1 is a factor of each term.]

Question (v)
6abc, 24ab², 12a²b
Solution:
6abc = 2 × 3 × a × b × c
24ab² = 2 × 2 × 2 × 3 × a × b × b
12a²b = 2 × 2 × 3 × a × a × b
∴ Common factors of 6abc, 24ab² and 12a²b
= 2 × 3 × a × b
= 6ab

Question (vi)
16x³, – 4x², 32x
Solution:
16x³ = 2 × 2 × 2 × 2 × x × x × x
– 4x² = (-1) × 2 × 2 × x × x
32x = 2 × 2 × 2 × 2 × 2 × x
∴ Common factors of 16x³, – 4x² and 32x = 2 × 2 × x = 4x

Question (vii)
10pq, 20qr, 30rp
Solution:
10pq = 2 × 5 × p × q
20qr = 2 × 2 × 5 × q × r
30rp = 2 × 3 × 5 × r × p
∴ Common factors of 10pq, 20qr and 30rp = 2 × 5 = 10

Question (viii)
3x²y³, 10x³y², 6x²y²z
Solution:
3x²y³ = 3 × x × x × y × y × y
10x³y² = 2 × 5 × x × x × x × y × y
6x²y²z = 2 × 3 × x × x × y × y × z
∴ Common factors of 3x²y³, 10x³y² and 6x²y²z
= x × x × y × y = x²y²

2. Factorise the following expressions:

Question (i)
7x – 42
Solution:
7x = 7 × x
42 = 2 × 3 × 7
∴ 7 is common in both terms.
7x – 42 = 7 (x – 6)

Question (ii)
6p – 12q
Solution:
6p = 2 × 3 × p
12q = 2 × 2 × 3 × q
∴ 2 × 3 = 6 is common in both terms.
6p – 12q = 6 (p – 2q)

Question (iii)
7a² + 14a
Solution:
7a² = 7 × a × a
14a = 2 × 7 × a
∴ 7 × a = 7a is common in both terms.
∴ 7a² + 14a = 7a (a + 2)

Question (iv)
– 16z + 20z³
Solution:
– 16z = -2 × 2 × 2 × 2 × z
20z³ = 2 × 2 × 5 × z × z × z
∴ 2 × 2 × z = 4z is common in both terms.
∴ – 16z + 20z³ = 4z (- 4 + 5z²)

Question (v)
20l²m + 30alm
Solution:
= 2 × 2 × 5 × l × l × m + 2 × 3 × 5 × a × l × m
= 10lm (2l + 3a)

Question (vi)
5x²y – 15xy²
Solution:
= 5xy (x – 3y)

Question (vii)
10a² – 15b² + 20c²
Solution:
= 5 (2a² – 3b² + 4c²)

Question (viii)
– 4a² + 4ab – 4ca
Solution:
= 4a (- a + b – c)

Question (ix)
x²yz + xy²z + xyz²
Solution:
= xyz (x + y + z)

Question (x)
ax²y + bxy² + cxyz
Solution:
= xy (ax + by + cz)

3. Factorise:

Question (i)
x² + xy + 8x + 8y
Solution:
= x (x + y) + 8 (x + y)
= (x + y) (x + 8)

Question (ii)
15xy – 6x + 5y – 2
Solution:
= 3x (5y – 2) + 1 (5y – 2)
= (5y – 2) (3x + 1)

Question (iii)
ax + bx- ay – by
Solution:
= x (a + b) – y (a + b)
= (a+ b) (x- y)

Question (iv)
15pq + 15 + 9q + 25p
Solution:
= 15pq + 9q + 25p + 15
= 3q (5p + 3) + 5 (5p + 3)
= (5p + 3) (3q + 5)

Question (v)
z – 7 + 7xy – xyz
Solution:
= z – 7 – xyz + 7xy
= 1 (z – 7) – xy (z – 7)
= (z – 7) (1 – xy)

Punjab State Board PSEB 7th Class English Book Solutions English Grammar Subject-Verb-Object Exercise Questions and Answers, Notes.

PSEB 7th Class English Grammar Subject-Verb-Object

एकवचन कर्ता (Subject) के साथ एकवचन क्रिया (Verb) का प्रयोग किया जाता है, जबकि बहुवचन कर्ता के साथ बहुवचन क्रिया का प्रयोग किया जाता है।

एकवचन क्रियाएं is, am, was, has, does तथा I form + s/es हैं। बहुवचन क्रियाएं हैं- are, were, have, do आदि।

Ram goes,
Ram and Sham go.
They go.
She goes.

1. यदि दो या दो से अधिक एकवचन Subjects को and से जोड़ा जाए तो प्राय: उनके साथ बहुवचन Verb का प्रयोग होता है; जैसे,

• Mohan and Ram are friends.
• Mohan, Sham and Ram play together.
• He and his brother have done the work.
• Sham and Gopal were there in the meeting.
• He and his friend do not work together.

2. यदि दो एकवचन संज्ञाएं (Nouns) किसी एक व्यक्ति या किसी एक चीज़ का बोध कराती हों तो ऐसी एकवचन संज्ञाओं (Nouns) के साथ एकवचन Verb का प्रयोग होता है; जैसे,

• My brother and helper has arrived.
• The leader and speaker is sitting on the stage.
• A great Gandhian and leader is dead.

नोट- (i) यदि एक ही व्यक्ति का बोध कराना हो तो Article का प्रयोग दोनों संज्ञाओं अथवा विशेषणों में से पहली संज्ञा या विशेषण के साथ ही किया जाता है।
(ii) यदि दो संज्ञाओं से दो अलग व्यक्तियों का बोध कराना हो तो प्रत्येक संज्ञा (Noun) से पूर्व Article का प्रयोग किया जाएगा। ऐसी अवस्था में बहुवचन क्रिया (Verb in Plural) का प्रयोग किया जाएगा।
The leader and the speaker are sitting on the stage.

3. यदि दो कर्त्ता मिलकर किसी एक विचार (one idea) को व्यक्त करते हों तो एकवचन क्रिया (Verb in Singular) का प्रयोग होता है; जैसे,

• Fish and meat is the food of the Bengalis.
• Slow and steady wins the race.
• Twenty kilometres is not a long distance.
• The horse and the carriage has arrived.

4. यदि एकवचन कर्ता (Subject) से पूर्व each अथवा every का प्रयोग किया जाए तो एकवचन क्रिया (Verb in Singular) का प्रयोग होता है; जैसे,

• Every boy and girl was well dressed.
• Every man, woman and child was present.
• Each day and each hour takes its account.

5. यदि दो या दो से अधिक एकवचन कर्ता (Subjects) को or, nor, either…….. or, neither…………nor से जोड़ा जाए तो एकवचन क्रिया का प्रयोग होता है; जैसे,

• Work or play has no difference for me.
• Neither he nor I was present.
• Either Mohan or Sohan has broken the slate.
• Neither food nor water was available there.
• Neither pleasure nor pain affects me.

6. जब or तथा nor से जोड़े गए Subjects का वचन भिन्न-भिन्न हो तो बहुवचन क्रिया का प्रयोग होना चाहिए तथा बहुवचन कर्ता को क्रिया के साथ रखना चाहिए; जैसे,

• Sham or his brothers have broken the slate.
• Neither the monitor nor the students were present.
• Neither the speaker nor the listeners were serious.
• Either the man or his sons have gone wrong.

7. जब or अथवा nor से विभिन्न कर्ता (Subjects) जुड़े हुए हों, तो क्रिया (Verb) अपने निकटतम् Subject: के Person (पुरुष) से मेल खाता है; जैसे,

• Either he or I have to go to Delhi.
• Neither you nor he is to blame.
• Either you or father is paying for it.

8. जब कर्ता (Subjects) के वचन अथवा पुरुष में अन्तर हो और वे and से जुड़े हों तो क्रिया (Verb) बहुवचन में प्रयोग होती है।

• He and I are good friends.
• My father and I have jointly done this.
• You and he are always together.
• You and I are always in time.

9. समूहवाचक संज्ञा (Collective Noun) के साथ पूरे समूह का भाव व्यक्त करने के लिए एकवचन क्रिया (Verb in Singular) का प्रयोग होता है। परन्तु यदि समूह के व्यक्तियों (individuals) का बोध कराना हो तो बहुवचन क्रिया (Verb in Plural) का प्रयोग होता है; जैसे,

• The Committee has chosen its Chairman.
• There is a large number of boys in the class.
• A number of players were playing foul.
• The police were called out. The crew was efficient.
• The crew were arrested after the accident.

10. कुछ संज्ञाएं देखने में बहुवचन लगती हैं, परन्तु वे भाव में एकवचन होती हैं। ऐसी संज्ञाओं के साथ एकवचन क्रिया (Verb) लगती है; जैसे,

• The news is good.
• Physics is an easy subject.

11. कुछ संज्ञाएं देखने में एकवचन लगती हैं परन्तु उनका अर्थ बहुवचन होता है। ऐसी संज्ञाओं के साथ बहुवचन क्रिया (Verb in Plural) का प्रयोग होता है; जैसे,

• The cattle are grazing in the field.
• People are there in the field.

12. हमें क्रिया का मेल वास्तविक Subject के साथ ही कराना चाहिये। कभी-कभी हम क्रिया का निकटतम Plural Subject के साथ मेल कर देते हैं और वास्तविक Subject की अनदेखी कर देते हैं। हमें क्रिया का मेल वास्तविक Subject के साथ ही करना चाहिये; जैसे,

• Each of the students was a player.
• Neither of the women was tall.
• Each one of plots is for sale.
• One of the boys was my friend.

13. यदि Subject में दो Nouns या Pronouns ‘with’ या ‘as well as’ के साथ जुड़े हों, तो क्रिया उनमें से पहले noun या pronoun से मेल खाती हैः जैसे:

• Ram, with all the members of his family, was present.
• He, as well as his friends, is there in the hall.
• Mohan, and not his friend, has done this.
• I, as well as he, have worked hard.

14. जब किसी क्रिया का Subject कोई Relative Pronoun हो, तो क्रिया Relative Pronoun से ठीक पहले वाले Subject के अनुसार लगती है; जैसे

• I, who am your guide, shall stand by you.
• You, who are my guide, are expected to stand by me.
• He is among the persons who are against me.

Exercise

In each of the following sentences supply a verb in agreement with its subject.

1. My scissors ………………. lost.
2. The police ………………… investigating the case.
3. Neither of the students …………………. right.
4. Raja and Rama ………………… in the garden.
5. Gagan with his friend ………………. come today.
6. Every boy and girl ………………… invited for the programme.
7. Five rupees ………………… too much for this item.
8. A packet of sweets ………………. given to each child.
9. All the children ……………….. going for the movie.
10. Six kilometres …………………. a long distance to walk.
11. Ram as well as Ravi ……………….. to be helped.
12. One of the students …………………. hurt while playing.
13. The military ………………… put on alert.
14. He, with his father, ……………… among the first to arrive.
15. There ………………… several mistakes in your work.
16. The quality of the fruits …………………. very good.
17. No news ……………… good news.
18. Twice three times ……………….. six.
19. Either he or ………………… at fault.
Hints:
1. are
2. is
3. is
4. were
5. has
6. was
7. are
8. was
9. are
10. is
11. is
12. was
13. was
14. was
15. are
16. is
17. is
18. is
19. am.

Punjab State Board PSEB 7th Class English Book Solutions English Grammar Prepositions Exercise Questions and Answers, Notes.

PSEB 7th Class English Grammar Prepositions

Preposition वह शब्द है जिसका प्रयोग Noun अथवा Pronoun के साथ स्थिति, समय, संबंध या साधन आदि दर्शाने के लिए किया जाता है।

उदाहरण-
There is a teacher in the class.
He is fond of milk.
The man jumped off the horse.

पहले वाक्य में in, teacher की स्थिति को व्यक्त करता है।
दूसरे वाक्य में of, fond तथा milk का आपसी सम्बन्ध बताता है।
तीसरे वाक्य में off, jumped तथा horse के आपसी सम्बन्ध को स्पष्ट करता है।

Preposition का प्रयोग प्रायः अपने Object से पहले किया जाता है। जैसा कि उपर्युक्त तीनों वाक्यों से स्पष्ट है, परन्तु कभी-कभी वह अपने Object के बाद भी प्रयोग होता है; जैसे,

Here is the book that you asked for.
What are you thinking of ?

Some Important Prepositions

1. Act upon (अमल करना)-Act upon my advice.
2. Aim at (निशाना बांधना)-The hunter aimed at the bird.
3. Angry with (क्रोधित)-The teacher is angry with you.
4. Agree with (सहमत होना)-I agree with you.
5. Agree.to (सहमत होना))-He agreed to my proposal.
नोट – (i) किसी व्यक्ति से सहमति के लिए agree के साथ with का प्रयोग किया जाता है।
(ii) किसी सुझाव से सहमति के लिए agree के साथ to का प्रयोग किया जाता है।
6. Absent from (अनुपस्थित होना)-She is absent from the class.
7. Afraid of (भयभीत)-He is afraid of his teacher.
8. Believe in (विश्वास रखना)-I believe in God.
9. Born of (जन्म लेना)-Pt. Nehru was born of rich parents.
10. Busy with (व्यस्त)-He is busy with his work.
11. Care for (परवाह करना)-He does not care for me.
12. Deal in (व्यापार करना)-He deals in sugar.
13. Die of (किसी रोग से मरना)-He died of fever.
14. Die for (के लिए मरना)-He died for his country. नोट-
(i) किसी बीमारी से मरने के लिए Die of का प्रयोग होता है।
(ii) देश पर मर मिटने के लिए Die for आता है।
15. Differ with (असहमत)-I differ with you.
16. Different from (से भिन्न)-This pen is different from that one.
17. Faith in (में विशवास)-I have faith in God.
18. Faithful to (के प्रति वफादार)-The dog is faithful to his master.
19. Fail in (असफल होना)-He failed in Hindi.
20. Famous for (के लिए प्रसिद्ध) Agra is famous for the Taj.

21. Fed up with (से तंग होन)-I am fed up with him.
22. Feed on (निर्वाह करना)-Cows feed on grass.
23. Fit for a (के योग्य)-I am fit for this work.
24. Full of (भरा होना)-The jug is full of water.
25. Fond of (का चाव होना)- I am fond of milk.
26. Glad at (प्रसन्न)-I am glad at your success.
27. Good at (निपुण)-I am good at English.
28. Good for (के लिए उपयोगी)-Milk is good for health.
29. Give up (त्यागना)-Give up your bad habits.
30. Invite to (आमंत्रित करना)- I invited him to tea.
31. Junior to (पद से नीचा)-He is junior to me.
32. Keep to (रहना)-Always keep to the left.
33. Kind to (दयालु)- He is kind to the poor.
34. Knock at (खटखटान)-I am knocking at the door.
35. Laugh at (हंसी उड़ान)-The boys laughed at the poor.
36. Lead to (जाना)-This road leads to Ambala.
37. Listen to (ध्यान देना)-Listen to me.
38. Look after (देखभाल करना)-I look after my old mother.
39. Mad with (से पगल)-He was mad with joy.
40. Made of (बनी हुई)-This table is made of wood.
41. Married to (विवाह होना या विवाह करना)-Rama was married to Sita.
42. Mix with (मेल जोल रखना)-Do not mix with bad boys.
43. Obedient to (अज्ञाकारी)-Ram is obedient to his teacher.
44. Pass through (गुज़रना)-He passed through a forest.
45. Put out (बुझाना)-Put out the fire.
46. Take pity (दया करना)-He took pity on me.
47. Popular with (सर्वप्रिय)-The teacher is very popular with the students.
48. Pray to (प्रार्थना करना)-I pray to God daily.
49. Proud of (गर्व करना)-I am proud of you.
50. Quick at (तेज)-He is quick at work.
51. Quarrel with (झगड़ना)-We should not quarrel with others.
52. Reply to (उतर देना)-He did not reply to my letter.
53. Send for (बुला भेजना)-He sent for the doctor.
54. Senior to (पद से ऊंचा)-He is senior to me.
55. Short of (कमी होना)-I am short of money.
56. Sick of (दःखी)-I am sick of this life.

57. Sorry for (के लिए खेद)-I am sorry for coming late.
58. Thankful to (के प्रति धन्यवादी)-I am thankful to you for your help.
59. Useful for (के लिए उपयोगी)- Milk is useful for health.
60. Wait for (प्रतीक्ष करना)- Please wait for me.

Exercise 1

Choose suitable prepositions from the box to fill in the blanks. One has been done for you:

from, across, along, between, by, on, behind, against, among, under, over, with, into, for, of, at, in front of.
1. There are trees in front of our house.
2. Do not stand………….. a vehicle.
3. We lost the match……………… Govt. High School, Ropar.
4. The minister stood ……………. the people.
5. Keep the bags ……………… the desk and the table.
6. People built houses ……………… the bridge.
7. We went ……………. bus to Amritsar.
8. The fare ……………. Chandigarh to Ludhiana is not cheap.
9. The boy stood……………. the hill.
10. Look ……………. the bag for your pens.
11. GO …………… Samir to the market.
12. Do not run but walk ……………… the bridge.
13. Run ……………. the road and call the man.
14. Look……………. the book and answer.
15. The boy is looking ……………… a bride.
Hints:
2. behind
3. against
4. among
5. between
6. under
7. by
8. from
9. on
10. into
11. with
12. across
13. along
14. over
15. for.

Exercise 2

I. Put a tick V on the correct preposition as shown in the first sentence:

1. Akshay takes delight (in/by) his studies.
2. Beware (from/of) thieves in a new place.
3. We all agreed (to/with) the proposal.
4. Rajmah and rice are popular (among/to) children.
5. The building was set (with/on) fire.
6. Do not be jealous (on/of) others.
7. Her face seems familiar (to/with) me.
8. We are known (about/to) Dr. Sharma.
9. I do not approve (with/of) smoking
10. Daljit lives (on/at) Madhya Marg.
11. Always write (în/with) ink.
12. Sam does not like interference (on/in) his work.
13. Pammi is married (with/to) Sukhwinder.
14. Our final examination is held (on/in) March.
15. Akhil is always late (for/to) school.
16. I have applied (from/for) leave.
17. We always talk (about/on) discipline.
18. The boy complained (with/against) me.
19. This book is useful (under/for) children.
20. Rana has just recovered (at/from) illness.
Hints:
1. in
2. of
3. to
4. among
5. on
6. of
7. to
8. to
9. of
10. at
11. in
12. in
13. to
14. in
15. for
16. for
17. about
18. against
19. for
20. from.

II. Using the words followed by preposition, make sentences of your own. The first one has been done for you:

interfere with, fit for, confident of, sorry for, mix with, make fun of, prays at, acted upon, bent on, superior to.
1. I do not allow my music lessons to ……………. my studies.
2. He is ………….. this post.
3. He is ………….. his success.
4. I am …………. the delay.
5. Do not ………….. bad boys.
6. Don’t ………… of the beggar.
7. He ………… Sri Harmandar Sahib.
8. He …………. my advice.
9. He is …………. making mischief.
10. My pen is ………… yours.
Answer:
1. I do not allow my music lessons to interfere with my studies.
2. He is fit for this post.
3. He is confident of his success.
4. I am sorry for the delay.
5. Do not mix with bad boys.
6. Don’t make fun of the beggar.
7. He prays at Sri Harmandar Sahib.
8. He acted upon my advice.
9. He is bent on making mischief.
10. My pen is superior to yours.