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MCQ WORKSHEET-II, LASS IX : CHAPTER - 1, NUMBER SYSTEM, , 1. Which one of the following is a rational number:, , (a) V3 (b) v2 ©) 0 (@) V5, , 2. 0.6666 in 2 form is:, q, , 6 2 3 1, Q b) c; d, ® 95 Or Os Mg, , 3. 4 in decimal form is:, , (a) 4.125 (b) 4.15 (c) 4.15 (d) 0.415, 4. The value of (3+V3)(3~3) is:, (a0 (b) 6 (9 (a) 3, , 5. The value of (¥5+V/2) is, (a) 7425 (b) 145V2 (©) 7+2VI0 (d) 7-210, , 6. The value of (V5 +V2)(V5 ~/2)is:, , (a) 10 (b)7 ()3 @) v3, , 7. The value of (3+V3)(2+2)is:, (a)6+3V2 +2V3 +6, (b)3-+3V2 +3V3 +6, (c)6-3V2 - 23-6, (d)6-3y2 +23 -V6, , 8. The value of (Vil +7)(Vi1 -V7) is:, , (a4 (by) -4 (c) 18 (d)- 18, 9. The value of (5+-V5)(S—5) is :, (a0 (b) 25 () 20 (d)- 20, , 1, 10. On rationalizing the denominator of =, we get, 7, , v7 v7, , 5, a)7 (b) — ) (d) V7, (a 7 io 7 v7