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MCQ WORKSHEET-II, CLASS IX : CHAPTER - 1, NUMBER SYSTEM, , 1. Which one of the following is a rational number:, (@) V3 (b) v2 (©) 0 @ V5, , 2. 0.6666 in” formis:, q, , 6 2 3 1, @ 5 O35 OF @ es, , 3. 4 in decimal form is:, , (a) 4.125 (b) 445 (©) 4.15 (d) 0.415, , 4. The value of (3: V3)(3-v3) is:, (a0 (b) 6 (9 (d)3, , 5. The value of (V5 +2) is:, (a) 7425 (b) 1452 (c) 74+.2V10 \(d) 7-210, , 6. The value of (v5 +v2)( v5 —v2) is:, (10 (b)7 (3 @ V3, , 7. The value of (3-3)(24+ v2 )is:, (a)6 + 3V2 +2V3 + V6, (1)3+3V2 +3V3 +6, (0)6-3V2 -2V3 V6, (d)6-3V2 +2V3-V6, , 8. The value of (vit +V7)(vi1-v7) is:, (a) 4 (b) -4 (c) 18 (d) -18, , 9. The value of (5+ v5)(5 v5) is:, (a)0 (b) 25 (c) 20 (d) -20, , a, v7, , 10. On rationalizing the denominator of, , ii, , , we get, , @7 2 © a @ Vi