IIT JEE प्रश्न और उत्तर का अभ्यास करें
8प्र: A Conical tent was erected by the army at a base camp with height 3 m and base diameter 10 m. If every person requires 3.92 cu.m air, then how many persons can be seated in that tent approximately? 2333 05b5cc6bfe4d2b4197774da97
5b5cc6bfe4d2b4197774da97- 120true
- 219false
- 317false
- 422false
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उत्तर : 1. "20"
व्याख्या :
Answer: A) 20 Explanation: Given height of the conical tent = 3 m Diameter = 10 => Radius = D/2 = 10/2 = 5 m Now, as the tent is in the conical form Volume of the conical tent = πr2h3 => (22 x 5 x 5 x 3) / (7 x 3) = 22 x 25/7 = 78.54 cu.m Given each person requires 3.92 cu.m of air => Number of persons can be seated in the tent = 78.54/3.92 = 20.03 =~ 20
प्र: Which day is observed as Rashtriya Ekta Diwas every year in India? 2062 05b5cc6bfe4d2b4197774da8d
5b5cc6bfe4d2b4197774da8d- 131st Julyfalse
- 231st Marchfalse
- 331st Januaryfalse
- 431st Octobertrue
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उत्तर : 4. "31st October"
व्याख्या :
Answer: D) 31st October Explanation:
प्र: According to a survey, which country has become the second largest smartphone market in the world? 1323 05b5cc6bfe4d2b4197774da92
5b5cc6bfe4d2b4197774da92- 1Japanfalse
- 2Chinafalse
- 3Indiatrue
- 4USAfalse
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उत्तर : 3. "India"
व्याख्या :
Answer: C) India Explanation: According to a Report by analyst firm Canalys, India has become the second largest smartphone market in the world.
प्र: Crack the Missing Letter Puzzle? 2193 05b5cc6bfe4d2b4197774da83
5b5cc6bfe4d2b4197774da83- 1Ifalse
- 2Kfalse
- 3Ltrue
- 4Wfalse
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उत्तर : 3. "L"
व्याख्या :
Answer: C) L Explanation: 13 x 2 = 26 => Z (opposite side) 12 x 2 = 24 => X (opposite side) 13 x 1 = 13 => M (opposite side) 12 x 1 = 12 => L (opposite side)
प्र: A boat whose speed in still water is 9 kmph, goes 12 km downstream and comes back in 3 hrs. Find the speed of the stream? 1229 05b5cc6bfe4d2b4197774da7e
5b5cc6bfe4d2b4197774da7e- 11 kmphfalse
- 23 kmphtrue
- 35 kmphfalse
- 44 kmphfalse
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उत्तर : 2. "3 kmph"
व्याख्या :
Answer: B) 3 kmph Explanation: Let the speed of the stream = x kmph From the given data, 129+x+129-x=3 hrs 3x2 = 27 => x = 3 kmph Therefore, the speed of the stream = 3 kmph
प्र: 12 students of class IX took part in GK quiz. If the number of boys is 4 more than the number of girls. Find the number of boys and girls took part in the quiz ? 1698 05b5cc6bfe4d2b4197774da79
5b5cc6bfe4d2b4197774da79- 17, 5false
- 29, 3false
- 38, 4true
- 46, 6false
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उत्तर : 3. "8, 4"
व्याख्या :
Answer: C) 8, 4 Explanation: Let the number of girls = x => x + x + 4 = 12 => 2x = 8 => x = 4 => Number of girls = 4 => Number of boys = 4 + 4 = 8
प्र: Social Rights will not include _____ of the following? 1553 05b5cc6bfe4d2b4197774da6f
5b5cc6bfe4d2b4197774da6f- 1Adivasifalse
- 2Womenfalse
- 3Care for Political Sectiontrue
- 4Childrenfalse
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उत्तर : 3. "Care for Political Section"
व्याख्या :
Answer: C) Care for Political Section Explanation:
प्र: The solution of 3(2u + v) = 7 uv and 3(u + 3v) = 11 uv is _____ 1418 05b5cc6bfe4d2b4197774da6a
5b5cc6bfe4d2b4197774da6a- 1u = 1, v = 0false
- 2u = 1, v = 3/2true
- 3u = 0, v = 3/4false
- 4u = 0, v = 1false
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उत्तर : 2. "u = 1, v = 3/2"
व्याख्या :
Answer: B) u = 1, v = 3/2 Explanation: Using Trial and error method, From the options u = 1, v = 3/2 satisfies both the equations.