GATE प्रश्न और उत्तर का अभ्यास करें
8प्र: Brass gets discoloured in air because of the presence of which of the following gases in air ? 2386 05b5cc6e0e4d2b4197774eb34
5b5cc6e0e4d2b4197774eb34- 1Hydrogen sulphidetrue
- 2Oxygenfalse
- 3Nitrogenfalse
- 4Carbon dioxidefalse
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उत्तर : 1. "Hydrogen sulphide"
व्याख्या :
Answer: A) Hydrogen sulphide Explanation:
प्र: If the C.I. on a sum for 2 years at 12 1/2 % per annum is Rs. 510, the S.I. on the same sum at the same rate for the same period of time is ? 1479 05b5cc6e0e4d2b4197774eb2a
5b5cc6e0e4d2b4197774eb2a- 1Rs. 580false
- 2Rs. 480true
- 3Rs. 550false
- 4Rs. 470false
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उत्तर : 2. "Rs. 480"
व्याख्या :
Answer: B) Rs. 480 Explanation: Let the sum be Rs. P. Then, P1+252x1002-P= 510 P[982- 1] = 510. Sum = Rs. 1920 So, S.I. = (1920 x 25 x 2) / (2 x 100) = Rs. 480
प्र: After independence, the first state organized on the basis of language age is ? 2568 25b5cc6dfe4d2b4197774eb25
5b5cc6dfe4d2b4197774eb25- 1Karnatakafalse
- 2Punjabfalse
- 3Gujaratfalse
- 4Andhra Pradeshtrue
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उत्तर : 4. "Andhra Pradesh"
व्याख्या :
Answer: D) Andhra Pradesh Explanation:
प्र: How many seconds will a 600 m long train take to cross a man walking with a speed of 7 km/hr in the direction of the moving train if the speed of the train is 67 km/hr ? 1387 05b5cc6dfe4d2b4197774eb20
5b5cc6dfe4d2b4197774eb20- 129 secfalse
- 258 secfalse
- 336 sectrue
- 444 secfalse
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उत्तर : 3. "36 sec"
व्याख्या :
Answer: C) 36 sec Explanation: Speed of train relative to man = 67 - 7 = 60 km/hr.= 60 x 5/18 = 50/3 m/sec. Time taken to pass the man = 600 x 3/50 = 36 sec.
प्र: A mixture of 70 litres of Fruit Juice and water contains 10% water. How many litres of water should be added to the mixture so that the mixture contains 12.5% water ? 2379 05b5cc6dfe4d2b4197774eb1b
5b5cc6dfe4d2b4197774eb1b- 12 littrue
- 24 litfalse
- 31 litfalse
- 43 litfalse
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उत्तर : 1. "2 lit"
व्याख्या :
Answer: A) 2 lit Explanation: Quantity of fruit juice in the mixture = 70 - [70 x (10/100) ]= 63 litres. After adding water, juice would form 87.5% of the mixture. Hence, if quantity of mixture after adding x liters of water, [(87.5) /100 ]*x = 63 => x = 72 Hence 72 - 70 = 2 litres of water must be added.
प्र: A tailor has 37.5 metres of cloth and he has to make 8 pieces out of a metre of cloth. How many pieces can he make out of half of the cloth he has ? 2077 05b5cc6dfe4d2b4197774eb0c
5b5cc6dfe4d2b4197774eb0c- 1300false
- 2150true
- 3175false
- 4200false
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उत्तर : 2. "150"
व्याख्या :
Answer: B) 150 Explanation: Half of the cloth = 37.5/2 From 1 meter he will make 8 pieces=> in 37.5/2 ---- ? 37.5/2 x 8 = 150.
प्र: Find the C.I. on Rs. 15,225 for 9 months at 16% per annum compounded quarterly ? 1300 05b5cc6dfe4d2b4197774eafd
5b5cc6dfe4d2b4197774eafd- 1Rs. 1911false
- 2Rs. 1909false
- 3Rs. 1901true
- 4Rs. 1907false
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उत्तर : 3. "Rs. 1901"
व्याख्या :
Answer: C) Rs. 1901 Explanation: P = Rs. 15225, n = 9 months = 3 quarters, R = 16% p.a. per quarter. Amount = 15225x1+41003 = (15225 x 26/25 x 26/25 x 26/25) = Rs. 17126.05 => C.I. = 17126 - 15625 = Rs. 1901.05.
प्र: 4 men and 6 women can complete a work in 8 days, while 3 men and 7 women can complete it in 10 days. In how many days will 10 women complete it ? 958 05b5cc6dfe4d2b4197774eb02
5b5cc6dfe4d2b4197774eb02- 140 daystrue
- 236 daysfalse
- 332 daysfalse
- 434 daysfalse
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उत्तर : 1. "40 days"
व्याख्या :
Answer: A) 40 days Explanation: Let 1 man's 1 day work = x and 1 woman's 1 day work = y.Then, 4x + 6y = 1/8 and 3x + 7y = 1/10Solving these two equations, we get:x = 11/400 and y = 1/40010 woman's 1 day work = (1/400 x 10) = 1/40. Hence, 10 women will complete the work in 40 days.