Roots Quiz
Practice quiz on Roots (Numerical Ability). 10 exam-style questions with explanations.
About This Quiz
Roots Quiz — Questions with Solutions
All 10 questions from this quiz with the correct answer and explanation. Attempt them yourself first, then open each solution to check your reasoning.
Q1.The square root of 169 is
- A.15
- B.13
- C.14
- D.12
Show answer
Answer: B. 13
13^2 = 169.
Q2.The square root of 0.0081 is
- A.0.09
- B.0.9
- C.0.03
- D.0.009
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Answer: A. 0.09
0.09^2 = 0.0081.
Q3.Square root of 225 is
- A.25
- B.14
- C.16
- D.15
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Answer: D. 15
15^2 = 225.
Q4.The cube root of 343 is
- A.6
- B.8
- C.7
- D.9
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Answer: C. 7
7^3 = 343.
Q5.The value of sqrt(50) x sqrt(2) is
- A.5
- B.10
- C.25
- D.100
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Answer: B. 10
sqrt(100) = 10.
Q6.The square root of 1/4 is
- A.1/8
- B.1/4
- C.2
- D.1/2
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Answer: D. 1/2
sqrt(1/4) = 1/2.
Q7.sqrt(0.25) =
- A.5
- B.0.25
- C.0.5
- D.0.05
Show answer
Answer: C. 0.5
0.5^2 = 0.25.
Q8.The cube root of 0.064 is
- A.0.4
- B.0.8
- C.0.2
- D.0.04
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Answer: A. 0.4
0.4^3 = 0.064.
Q9.Simplify sqrt(18).
- A.6 sqrt(2)
- B.9
- C.3 sqrt(2)
- D.2 sqrt(3)
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Answer: C. 3 sqrt(2)
sqrt(9 x 2) = 3 sqrt(2).
Q10.The square root of 7744 is
- A.88
- B.86
- C.78
- D.98
Show answer
Answer: A. 88
88^2 = 7744.
Frequently Asked Questions
Is Roots Quiz free to attempt on AajExam?
Yes. Roots Quiz is completely free. You only need a free AajExam account to track your score, view detailed solutions and unlock cross-attempt analytics.
How long does it take to complete Roots Quiz?
Roots Quiz runs on a 10-minute timer in real exam-style conditions. The clock starts the moment you click Start, mirroring the time pressure of the actual exam.
Are detailed solutions provided?
Yes. Every question on Roots Quiz ships with a complete step-by-step solution, the underlying concept, and (where applicable) shortcut tricks. You can also discuss any question with the AajExam community.
Can I attempt Roots Quiz multiple times?
Yes. You can attempt this quiz as many times as you like. Each attempt is recorded separately so you can track improvement in score, accuracy and time-management.
Which government exams does this quiz prepare me for?
Square Roots & Cube Roots questions appear regularly in SSC CGL, CHSL, MTS, GD; IBPS PO, Clerk; SBI PO, Clerk; RRB NTPC, Group D; UPSC prelims and most State PSC exams. The specific weightage varies by exam — check the exam pattern on the corresponding AajExam exam page for details.