IIT JEE Practice Question and Answer
8Q: A train 125 m long passes a man, running at 4 km/hr in the same direction in which the train is going, in 10 seconds. The speed of the train is: 1670 05b5cc6d6e4d2b4197774e65b
5b5cc6d6e4d2b4197774e65b- 149 kmphtrue
- 250 kmphfalse
- 351 kmphfalse
- 452 kmphfalse
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Answer : 1. "49 kmph"
Explanation :
Answer: A) 49 kmph Explanation: Speed of the train relative to man = (125/10) m/sec = (25/2) m/sec. [(25/2) x (18/5)] km/hr = 45 km/hr. Let the speed of the train be 'x' km/hr. Then, relative speed = (x - 4) km/hr. x - 4 = 45 => x = 49 km/hr.
Q: At what rate percent on simple interest will Rs.415 amount to Rs.514 in 4 years ? 1429 05b5cc6d6e4d2b4197774e656
5b5cc6d6e4d2b4197774e656- 14.58 %false
- 25.96 %true
- 36.52 %false
- 44.98 %false
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Answer : 2. "5.96 %"
Explanation :
Answer: B) 5.96 % Explanation: Difference in amount = 514 - 415 = 99 99 = (415 x 4 x R)/100 R = 5.96%
Q: A 260 m long train running at the speed of 120 km/hr crosses another train running in opposite direction at the speed of 80 km/hr in 9 sec. What is the length of the other train ? 1493 05b5cc6d6e4d2b4197774e651
5b5cc6d6e4d2b4197774e651- 1240 mtstrue
- 2270 mtsfalse
- 3260 mtsfalse
- 4250 mtsfalse
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Answer : 1. "240 mts"
Explanation :
Answer: A) 240 mts Explanation: Relative speed = 120 + 80 = 200 km/hr.= 200 x 5/18 = 500/9 m/sec. Let the length of the other train be L mts.Then, (L + 260)/9 = 500/9 => L = 240 mts.
Q: Where is the headquarters of the United Nations Economic and Social Council (ECOSOC) ? 1950 05b5cc6d5e4d2b4197774e63d
5b5cc6d5e4d2b4197774e63d- 1Berlinfalse
- 2C) ? A) Berlin B)false
- 3? A) Berlin B) Spain C) Londonfalse
- 4New Yorktrue
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Answer : 4. "New York"
Explanation :
Answer: D) New York Explanation: The Economic and Social Council (ECOSOC) is one of the six principal organs of the United Nations for coordinating the economic, social and environmental issues, as well as for implementing internationally agreed development goals. Recently, it is in news because India has been re-elected to the United Nations ECOSOC for another 3-year term. India was among 18 nations to win election to the Economic and Social Council (ECOSOC). India obtained 183 votes, the second highest after Japan in the Asia Pacific category. The elected members of ECOSOC for a three-year term beginning 1 January, 2018 are Belarus, Ecuador, El Salvador, France, Germany, Ghana, India, Ireland, Japan, Malawi, Mexico, Morocco, Philippines, Spain, Sudan, Togo, Turkey and Uruguay. The headquarters of the ECOSOC is located in New York, Unites States.
Q: Math Challenge 1808 05b5cc6d5e4d2b4197774e633
5b5cc6d5e4d2b4197774e633- 17false
- 244false
- 34true
- 433false
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Answer : 3. "4"
Explanation :
Answer: C) 4 Explanation: Let the required number be 'N' given that its quarter i.e; N/4 exceeds its double i.e, 2N by 7 => N/4 + 7 = 2N => N + 28 = 8N 7N = 28 N = 4.
Q: Logic Challenge 1616 05b5cc6d5e4d2b4197774e62e
5b5cc6d5e4d2b4197774e62e- 140false
- 220false
- 32true
- 436false
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Answer : 3. "2"
Explanation :
Answer: C) 2 Explanation: In the starting it is given that Couple went to the movie and No other went with them. So total members went to movie is only 2.
Q: Calender Puzzle 1619 05b5cc6d5e4d2b4197774e629
5b5cc6d5e4d2b4197774e629- 1Afalse
- 2Bfalse
- 3Cfalse
- 4Dtrue
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Answer : 4. "D"
Explanation :
Answer: D) D Explanation: We can't determine the last day of the next month which has 31 days because we don't know the days in present month which may be 30 or 31. And the next month may be March which contains 31 days which implies that the present month may be February which contains 28 or 29 days.
Q: The Jigme Dorji National Park is located in which country ? 1906 05b5cc6d5e4d2b4197774e61f
5b5cc6d5e4d2b4197774e61f- 1Myanmarfalse
- 2Bhutantrue
- 3Indiafalse
- 4Nepalfalse
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Answer : 2. "Bhutan"
Explanation :
Answer: B) Bhutan Explanation: The Jigme Dorji National Park is the second-largest National Park of Bhutan. The park provides sanctuary for 37 known species of mammals including several endangered, threatened or vulnerable species, such as the takin, snow leopard, clouded leopard, Bengal tiger, bharal or Himalayan blue sheep, etc. It is also home to the Indian leopard, serow, sambar, barking deer, goral, marmot, pika and more than 300 species of birds. It is also the only park in Bhutan where the national animal (takin), flower (blue poppy), bird (raven) and tree (cypress) exist together.

