Class 9 Number Systems MCQ Quiz Set 1 MCQ Quiz – 1 Important Questions NCERT Solutions Number Systems Quiz – 1 1. √6 x √27 is equal to: 9√2 9√3 3√3 2√2 2. Every rational number is a whole number a natural number a real number an integers 3. In between any two numbers, there are: Infinite rational numbers Only one rational number No rational number Two rational numbers 4. Which of the following is an irrational number? √100 √(12/3) √12 √16 5. The three rational numbers between 3 and 4 are: 13/4, 14/4, 15/4 11/4, 12/4, 13/4 5/2, 6/2, 7/2 12/7, 13/7, 14/7 6. The rational number between -1/5 and -2/5 is -7/25 -3/10 -1/4 4 7. 2√3+√3 = 6 3√3 2√6 none 8. Which of the following is true statement ? every real number is always rational every real number is either rational or irrational the product of two irrational number is a irrational number the sum of two irrational numbers is a irrational number 9. (√a + √b) (√a – √b) is a – b 2√b 2√a a + b 10. √9 is ……….. number. A rational none Neither rational nor irrational An irrational 11. A rational number between √2 and √3: 1.8 1.9 (√2. √3)/2 1.5 12. Can we write 0 in the form of p/q? Cannot be explained yes none no 13. Which of the following is a true statement ? π is irrational and 22/7 is rational π is rational and 22/7 is irrational π and 22/7 are both irrationals π and 22/7 are both rationals 14. The product of a rational and an irrational numbers is: Always an irrational number Always an integer Always a rational number Sometimes rational and sometimes irrational 15. The decimal expansion of √2 is non-terminating recurring 1.4121 finite decimal non-terminating non-recurring Loading …

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