We have compiled the NCERT MCQ Questions for Class 7 Maths Chapter 13 Exponents and Powers with Answers Pdf free download covering the entire syllabus. Practice MCQ Questions for Class 7 Maths with Answers on a daily basis and score well in exams. Refer to the Exponents and Powers Class 7 MCQs Questions with Answers here along with a detailed explanation.
Exponents and Powers Class 7 MCQs Questions with Answers
Choose the correct option.
Question 1.
The exponential form of 3125 is
(a) 5²
(b) 5³
(c) 54
(d) 55
Answer
Answer: (d) 55
Question 2.
The value of (-2)4 is ………..
(a) -16
(b) 16
(c) 8
(d) – 8
Answer
Answer: (b) 16
Question 3.
If (-3)4 × (-3)6 = (-3)x then x = ………….
(a) -10
(b) 10
(c) – 4
(d) – 6
Answer
Answer: (b) 10
Question 4.
The value of 3° × 4° × 5° is ………..
(a) 60
(b) 0
(c) 1
(d) 3
Answer
Answer: (c) 1
Question 5.
If x is a rational number and ‘a’ and ‘b’ are whole numbers then the value of xa × xb is
(a) xa-b
(b) xab
(c) x\(\frac {a}{b}\)
(d) xa+b
Answer
Answer: (d) xa+b
Question 6.
If x is a rational number ‘a’ and ‘b’ (a > b) are whole numbers, then the value of xa ÷ xb is
(a) xa+b
(b) xa-b
(c) x\(\frac {a}{b}\)
(d) xab
Answer
Answer: (b) xa-b
Question 7.
The value of \(\frac {3^8}{3^5×3^3}\) is …………
(a) 1
(b) 3
(c) 5
(d) 8
Answer
Answer: (a) 1
Question 8.
20,00,000 in standard form is
(a) 0.2 × 105
(b) 2.0 × 106
(c) 10.2 × 106
(d) 10.2 × 105
Answer
Answer: (b) 2.0 × 106
Question 9.
3430000 in standard form is
(a) 3.43 × 106
(b) 3.43 × 104
(c) 3.43 × 10²
(d) 3.43 × 10°
Answer
Answer: (a) 3.43 × 106
Question 10.
1.2 × 1010 in the normal form is
(a) 120000000000
(b) 12000000
(c) 12000000
(d) 12000 000 000
Answer
Answer: (d) 12000 000 000
Question 11.
The value of (\(\frac {3}{4}\))° is
(a) 0
(b) 1
(c) -1
(d) None of these
Answer
Answer: (b) 1
Question 12.
The value of (-1)² is
(a) 0
(b) -1
(c) 1
(d) None of these
Answer
Answer: (c) 1
Fill in the blanks
Question 1.
5° × 3° is ……………..
Answer
Answer: 1
Question 2.
\(\frac {64}{729}\) is expressed in power notation as ………………
Answer
Answer: (4/9)³
Question 3.
(\(\frac {-3}{5}\)) × (\(\frac {-3}{5}\)) × (\(\frac {-3}{5}\)) × (\(\frac {-3}{5}\)) × (\(\frac {-3}{5}\)) × (\(\frac {-3}{5}\))
is expressed in exponential form as ……………..
Answer
Answer: (-3/5)³
Question 4.
Simplify (\(\frac {5}{11}\))6 ÷ (\(\frac {5}{11}\))7 the result ………………..
Answer
Answer: \(\frac {11}{5}\)
Question 5.
The value of (10) × (-10)³ is ………………..
Answer
Answer: -(10)4
Question 6.
(\(\frac {2}{3}\))² × (\(\frac {2}{3}\))³ = ……………………..
Answer
Answer: (\(\frac {2}{3}\))5
Question 7.
(\(\frac {1}{2}\))5 + (\(\frac {1}{2}\))³ = ……………………..
Answer
Answer: (\(\frac {1}{2}\))5-3
Question 8.
(2 × 3)° = …………………
Answer
Answer: 1
Question 9.
{\(\frac {2^1}{3^3}\)}° = …………………
Answer
Answer: 1
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