Maths Chapter 1: Rational Numbers - Set 1 (Class 8)

Question 1

Is $\frac{p}{q}$ the rational no if ?

Accepted Answer

$q
e o$

Answer

q=0

Answer

p,q=0

Answer

None of these

Question 2

What is commutative addition?

Accepted Answer

a+b=b+a

Answer

a$($b+c$)$=ab+ac

Answer

a×b=b×a

Answer

a÷b =b÷a

Question 3

What is commutative substraction ?

Accepted Answer

a-b=b-a

Answer

ab-ca=ba-ac

Answer

a$($b-c$)$=ab-ac

Answer

None of these

Question 4

What is commutative multiplication?

Accepted Answer

a×b=b×a

Answer

a×b×c=b×a×c

Answer

a$($b+c$)$=ab+bc

Answer

None of these

Question 5

What is commutative division?

Accepted Answer

a÷b=b÷a

Answer

ab÷ac=ba÷ca

Answer

a÷c=1

Answer

None of these

Question 6

Is the Rational number follow commutative addition?

Accepted Answer

Yes

Answer

No

Answer

Never follow

Answer

None of these

Question 7

Is the Rational No. follow commutative substruction ?

Accepted Answer

No

Answer

Yes

Answer

Never follow

Answer

None of these

Question 8

Is the Rational No. follow commutative multiplication?

Accepted Answer

Yes

Answer

No

Answer

Never follow

Answer

None of these

Question 9

Is the Rational No. follow commutative division ?

Accepted Answer

No

Answer

Yes

Answer

Never follow

Answer

None of these

Question 10

What is associative addition ?

Accepted Answer

a+$($b+c$)$=$($a+b$)$+c

Answer

a+b+c=b+c+a

Answer

$(a+b)+c=a+b+c$

Answer

$a+b+c=(a+b)+c$

CHAPTER-1 RATIONAL NUMBERS (SET-1)

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