CBSE Class 8 Mathematics Power Play MCQs Set D

Question. Which of the following is equal to (34)⁻²
(a) (43)²
(b) (34)²
(c) 3/4
(d) 4/3

Answer: A

Question. Passwords possible for a 5-digit lock is.
(a) 10 raised to 5
(b) 5 raised to 10
(c) 50000
(d) 50

Answer: A

Question. In scientific notation x multiplied 10 raised to y, x must be.
(a) Between 1 and 10
(b) Less than 1
(c) More than 10
(d) Zero

Answer: A

Question. In scientific notation x multiplied by 10 raised to y, the y must be.
(a) Only positive
(b) Only negative
(c) Any integer
(d) Always zero

Answer: C

Question. Which Indian number-name corresponds to 10⁷?
(a) Arab
(b) Neel
(c) Crore
(d) Lakh

Answer: C

Question. Find value of (-1) raised to 56.
(a) 1
(b) -1
(c) 56
(d) 0

Answer: A

Question. Rule for (n raised to a) raised to b is n raised to.
(a) a plus b
(b) a multiplied by b
(c) a minus b
(d) a divided by b

Answer: B

Question. In Indian naming, a hundred arab is called.
(a) Crore
(b) Kharab
(c) Neel
(d) Padma

Answer: B

Question. How is n^-a expressed in its equivalent positive exponent form?
(a) −n^a
(b) 1/nᵃ
(c) n + a
(d) n^a

Answer: B

Question. Population of Mumbai 2 crore is written as.
(a) 2 x 10 raised to 6
(b) 2 x 10 raised to 7
(c) 20 x 10 raised to 6
(d) 2 x 107

Answer: B

Question. Rule for n raised to a divided by n raised to b is.
(a) n raised to (a plus b)
(b) n raised to (a minus b)
(c) n raised to (a multiplied b)
(d) 1

Answer: B

Question. Total diamonds that shine in the prize was.
(a) 3 raised to 6
(b) 3 raised to 7
(c) 243
(d) 81

Answer: B

Question. What is the number 10¹⁰⁰ also called?
(a) Googol
(b) Googolplex
(c) Billion
(d) Million

Answer: A

Question. Ants alone weigh more than all wild birds and wild mammals.
(a) Added together
(b) Divided
(c) Subtracted
(d) Not possible

Answer: A

Question. In Indian naming, a hundred neel is called.
(a) Arab
(b) Padma
(c) Shankh
(d) Kharab

Answer: B

Question. In the division rule for powers, the value of n cannot be.
(a) 1
(b) 10
(c) 0
(d) 100

Answer: C

Question. Simplify (2^-3.2⁴).
(a) 2⁷
(b) (2)^-7
(c) 2
(d) 1/2

Answer: C

Question. Shorthand way to write 0.001 x 2 x 2 is.
(a) 0.001 x 4
(b) 0.001 x 2 squared
(c) 0.001 + 4
(d) 2 x 2

Answer: B

Question. For the population of Mumbai, which part of 2 x 10 raised to 7 is more important?
(a) The number 2
(b) The exponent 7
(c) The decimal
(d) The multiplication sign

Answer: B

Question. We read n squared as n raised to the power.
(a) 1
(b) 2
(c) 3
(d) 0

Answer: B