IIT JEE Practice Question and Answer
8Q: A train is moving and crossing a man who is running on a platform of 100 m at a speed of 8 kmph in the direction of the train, in 9 sec. If the speed of the train is 74 kmph. Find the length of the train ? 881 05b5cc6c3e4d2b4197774dc27
5b5cc6c3e4d2b4197774dc27- 1202 mtsfalse
- 2188 mtsfalse
- 3165 mtstrue
- 4156 mtsfalse
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Answer : 3. "165 mts"
Explanation :
Answer: C) 165 mts Explanation: Let the length of the train = L mts Relative speed of train and man = 74 - 8 = 66 kmph = 66 x 5/18 m/s => 66 x 5/18 = L/9 => L = 165 mts.
Q: One boat is overtaking another. Which boat must give way? 879 05b5cc67be4d2b4197774c214
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Answer :
Explanation :
The boat which is overtaken must give way to the boat which is overtaking.
Q: The edge of three cubes of metal is 3 m, 4 m and 5 m. They are melted and formed into a single cube. Find the edge of the new cube ? 878 05b5cc6e7e4d2b4197774eda1
5b5cc6e7e4d2b4197774eda1- 115 mfalse
- 24 mfalse
- 36 mtrue
- 49 mfalse
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Answer : 3. "6 m"
Explanation :
Answer: C) 6 m Explanation: The edge of the new cube is = 33+43+53 = a3 => a = 6 m.
Q: Find the Missing Numbers in the given Number Puzzle ? 877 05b5cc6c9e4d2b4197774df74
5b5cc6c9e4d2b4197774df74- 1169 & 81true
- 267 & 121false
- 364 & 115false
- 470 & 110false
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Answer : 1. "169 & 81"
Explanation :
Answer: A) 169 & 81 Explanation: Observe that in each column, square of sum of digits in the first row = Respective second row elements. In the same way, square of sum of digits in the second row = Respective third row elements. => 6+42=102=100 => 4+92=132=169 => 8+12=92=81.
Q: What tastes better than it smells? 877 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: Find the lowest 4-digit number which when divided by 3, 4 or 5 leaves a remainder of 2 in each case ? 875 05b5cc6dae4d2b4197774e8cd
5b5cc6dae4d2b4197774e8cd- 11020false
- 21040false
- 31060false
- 41022true
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Answer : 4. "1022"
Explanation :
Answer: D) 1022 Explanation: Lowest 4-digit number is 1000.LCM of 3, 4 and 5 is 60.Dividing 1000 by 60, we get the remainder 40. Thus, the lowest 4-digit number that exactly divisible by 3, 4 and 5 is 1000 + (60 - 40) = 1020.Now, add the remainder 2 that's required. Thus, the answer is 1022.
Q: Pressure, pain, and temperature receptors in the skin are 874 05b5cc69ce4d2b4197774c867
5b5cc69ce4d2b4197774c867- 1Exteroceptorstrue
- 2Proprioceptorsfalse
- 3Interoceptorsfalse
- 4Mechanoreceptorsfalse
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Answer : 1. "Exteroceptors"
Explanation :
Answer: A) Exteroceptors Explanation:
Q: According to a report by New World Wealth, which is the richest city in the world 2018? 874 05b5cc6a2e4d2b4197774cb3d
5b5cc6a2e4d2b4197774cb3d- 1Tokyofalse
- 2New Yorktrue
- 3Londonfalse
- 4Parisfalse
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Answer : 2. "New York"
Explanation :
Answer: B) New York Explanation: New York City, London, and Tokyo are the richest cities in the world 2018, according to their ranks.