IIT JEE Practice Question and Answer
8Q: What tastes better than it smells? 1397 05b5cc67ee4d2b4197774c24a
5b5cc67ee4d2b4197774c24a- Show AnswerHide Answer
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Answer :
Explanation :
Tongue. Yes tongue tastes better than it smells as it can't smell.
Q: 54, 60 LCM is 1397 05b5cc6bce4d2b4197774d891
5b5cc6bce4d2b4197774d891- 1600false
- 2540true
- 360false
- 454false
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Answer : 2. "540"
Explanation :
Answer: B) 540 Explanation: Here the LCM of 54, 60 is => 2 x 3 x 3 x 3 x 10 = 6 x 9 x 10 = 54 x 10 = 540.
Q: What is the smallest unit that can evolve? 1396 05b5cc69de4d2b4197774c8d5
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Answer :
Explanation :
The population is the smallest unit of living organisms that can undergo evolution.
Q: How long is a term in the house of representatives? 1394 05b5cc62ce4d2b4197774b933
5b5cc62ce4d2b4197774b933- 15false
- 22true
- 34false
- 46false
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Answer : 2. "2"
Explanation :
Answer: B) 2 Explanation: Members of the House of Representatives serve two-year terms and are considered for reelection every even year.
Q: In a mixture, the ratio of juice and water is 4 : 3. By adding 6 litre water the ratio of juice and water will be 8 : 7. What is the amount of juice in the original mixture ? 1393 05b5cc6c9e4d2b4197774dfbb
5b5cc6c9e4d2b4197774dfbb- 138 litfalse
- 296 litfalse
- 348 littrue
- 452 litfalse
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Answer : 3. "48 lit"
Explanation :
Answer: C) 48 lit Explanation: Let the amount of juice and water in original mixture '4x' litre and '3x' litre respectively. According to given data, 4x/3x+6 =8/7 28x=24x+48 28x–24x=48 4x = 48 x = 12 Amount of juice = 4x = 4×12 = 48 litre.
Q: The length of a rectangle is 10 cm more than the breadth. Find the diagonal length of rectangle if perimeter is 44 cm ? 1393 05b5cc6cae4d2b4197774e06d
5b5cc6cae4d2b4197774e06d- 112.50 cmfalse
- 214.21 cmfalse
- 315.98 cmfalse
- 417.08 cmtrue
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Answer : 4. "17.08 cm"
Explanation :
Answer: D) 17.08 cm Explanation: Let the length of the rectangle = L cm Then the breadth of the rectangle = (L - 10) cm Perimeter of a rectangle = 2(L + B) cm => 44 = 2(L + L - 10) => 44 = 4L - 20 => 4L = 64 => L = 16 cm => B = L - 10 = 6 cm Diagonal = L2+B2 = 162+62 = 17.08 cm
Q: Two trains running in opposite directions cross a pole placed on the platform in 47 seconds and 31 seconds respectively. If they cross each other in 33 seconds, what is the ratio of their speeds? 1393 05b5cc764e4d2b4197774fd85
5b5cc764e4d2b4197774fd85- 11:7true
- 27:1false
- 32:3false
- 43:2false
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Answer : 1. "1:7"
Explanation :
Answer: A) 1:7 Explanation: Let the speed of the trains be x and y respectively length of train1 = 47xlength of train2 = 31yRelative speed= x + yTime taken to cross each other = 33 s=> 47x+31yx+y= 33=> (47x + 31 y) = 33(x + y)=> 14x = 2y=> x/y = 2/14 = 1/7 = 1:7
Q: 36 of what number is 18? 1393 05b5cc697e4d2b4197774c604
5b5cc697e4d2b4197774c604- 138false
- 242false
- 350true
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Answer : 3. "50"
Explanation :
Answer: C) 50 Explanation: Let the required number be 'p' 36 of what number is 18 implies 36% of p = 18 => 36 x p/100 = 18 => p = 1800/36 => p = 50. Hence, 36% of 50 is 18.