IIT JEE प्रश्न और उत्तर का अभ्यास करें
8प्र: P and Q can complete a job in 24 days working together. P alone can complete it in 32 days. Both of them worked together for 8 days and then P left. The number of days Q will take to complete the remaining work is ? 3423 05b5cc6c0e4d2b4197774db05
5b5cc6c0e4d2b4197774db05- 156 daysfalse
- 254 daysfalse
- 360 daysfalse
- 464 daystrue
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उत्तर : 4. "64 days"
व्याख्या :
Answer: D) 64 days Explanation: (P+Q)'s 1 day work = 1/24 P's 1 day work = 1/32 => Q's 1 day work = 1/24 - 1/32 = 1/96 Work done by (P+Q) in 8 days = 8/24 = 1/3 Remainining work = 1 - 1/3 = 2/3 Time taken by Q to complete the remaining work = 2/3 x 96 = 64 days.
प्र: Which statement best describes an O3 molecule? 3417 05b5cc6b3e4d2b4197774d432
5b5cc6b3e4d2b4197774d432- 1The double bond in ozone switches back and forth between the two outer oxygen atomsfalse
- 2An ozone molecule contains one single bond and one double bondtrue
- 3Each atom in ozone is connected to another atom by 1.5 bonds.false
- 4Nonefalse
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उत्तर : 2. "An ozone molecule contains one single bond and one double bond"
व्याख्या :
Answer: B) An ozone molecule contains one single bond and one double bond Explanation: Ozone molecule has one single bond and one double bond.
प्र: The longest ship canal in the world is the 3414 05b5cc69fe4d2b4197774c9fb
5b5cc69fe4d2b4197774c9fb- 1Suez canal, Egyptfalse
- 2Kiel canal, Germanyfalse
- 3Panama canal, Central Americafalse
- 4St. Laurence Seaway (USA and Canada)true
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उत्तर : 4. "St. Laurence Seaway (USA and Canada)"
व्याख्या :
Answer: D) St. Laurence Seaway (USA and Canada) Explanation:
प्र: A batsman in his 17th innings makes a score of 85 and their by increasing his average by 3. What is his average after the 17th innings ? 3404 05b5cc6e9e4d2b4197774ee01
5b5cc6e9e4d2b4197774ee01- 134false
- 236false
- 335false
- 437true
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उत्तर : 4. "37"
व्याख्या :
Answer: D) 37 Explanation: 16x + 85 = 17(x + 3) x = 34 + 3 = 37
प्र: The wildcard in a WHERE clause is useful when 3394 05b5cc65ee4d2b4197774be3b
5b5cc65ee4d2b4197774be3b- 1An exact match is not possible in a SELECT statement.true
- 2An exact match is necessary in a CREATE statement.false
- 3An exact match is not possible in a CREATE statement.false
- 4An exact match is necessary in a SELECT statement.false
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उत्तर : 1. "An exact match is not possible in a SELECT statement."
व्याख्या :
Answer: A) An exact match is not possible in a SELECT statement. Explanation:
प्र: From the following pairs, find the one which is correctly matched? 3392 05b5cc6bee4d2b4197774d960
5b5cc6bee4d2b4197774d960- 1Scurvy- Thiaminefalse
- 2Tuberculosis- ATSfalse
- 3Tetanus- BCGfalse
- 4Malaria- Chloroquinetrue
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उत्तर : 4. "Malaria- Chloroquine"
व्याख्या :
Answer: D) Malaria- Chloroquine Explanation: Chloroquine is a medication used to prevent and to treat malaria.
प्र: If NAMO = 172 and OM = 56 then, SHIVAY = ? 3392 05b5cc6cee4d2b4197774e237
5b5cc6cee4d2b4197774e237- 1606false
- 2415false
- 3504true
- 4404false
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उत्तर : 3. "504"
व्याख्या :
Answer: C) 504 Explanation: (COUNTING OF LETTERS) NAMO = 14 + 1 + 13 + 15 = 43 x 4 = 172, OM = 15 + 13 = 28 x 2 = 56, SHIVAY = 19 + 8 + 9 + 22 + 1 + 25 = 84 x 6 = 504
प्र: What is the next number in the given Number Series? 5, 24, 94, 279, ? 3389 05b5cc6b9e4d2b4197774d73e
5b5cc6b9e4d2b4197774d73e- 1587false
- 2554true
- 3489false
- 4499false
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उत्तर : 2. "554"
व्याख्या :
Answer: B) 554 Explanation: The given number series follows a pattern that 5 x 5 – 1 = 24 24 x 4 – 2 = 94 94 x 3 – 3 = 279 279 x 2 – 4 = 554