IIT JEE Practice Question and Answer
8Q: Two trains of equal length are running on parallel lines in the same direction at 36 km/hr and 26 km/hr. The faster train passes the slower train in 36 sec. The length of each train is ? 1466 05b5cc6e0e4d2b4197774eb93
5b5cc6e0e4d2b4197774eb93- 128 mtsfalse
- 254 mtsfalse
- 324 mtsfalse
- 450 mtstrue
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Answer : 4. "50 mts"
Explanation :
Answer: D) 50 mts Explanation: Let the length of each train be x mts. Then, distance covered = 2x mts. Relative speed = 36 - 26 = 10 km/hr. = 10 x 5/18 = 25/9 m/sec. 2x/36 = 25/9 => x = 50 mts.
Q: What is my PIN number ? 1465 05b5cc6d1e4d2b4197774e39c
5b5cc6d1e4d2b4197774e39c- 193714false
- 242789false
- 336671false
- 493747true
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Answer : 4. "93747"
Explanation :
Answer: D) 93747 Explanation: From the hints, Only two options for 1st and 2nd digits => 4,2 and 9,3 since it is single digits Sum of second and third digit = 10 If 2 => 3rd digit = 8 If 3 => 3rd digit = 7 4th digit = 2nd digit + 1 => (2+1 =3) or (3+1 = 4) Sum of all digits = 30 Let 5th digit be x => 1st possibility = 4 + 2 + 8 + 3 + x = 30 => x = 13 (Not possible since it has 2 digits) => 2nd possibility = 9 + 3 + 7 + 4 + x = 30 => x = 7 Therefore, the PIN is 93747
Q: Privately owned businesses are common in which type of economy? 1465 05b5cc63de4d2b4197774baca
5b5cc63de4d2b4197774baca- 1Capitalist economiestrue
- 2Socialist economiesfalse
- 3Gift economiesfalse
- 4Planned economiesfalse
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Answer : 1. "Capitalist economies"
Explanation :
Answer: A) Capitalist economies Explanation:
Q: Value of vehicle at end of each year depreciates at the rate of 3/5th of value at the beginning. If Initial value is 10,000Rs then at the end of three years its value is ? 1465 05b5cc715e4d2b4197774f472
5b5cc715e4d2b4197774f472- 1Rs. 6000false
- 2Rs. 3600false
- 3Rs. 2160true
- 4Rs. 415false
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Answer : 3. "Rs. 2160"
Explanation :
Answer: C) Rs. 2160 Explanation: End of first year : 10000 x (3/5) = Rs. 6000End of second year : 6000 x (3/5) = Rs. 3600End of third year : 3600 x (3/5) = Rs. 2160
Q: What is the most commonly spoken language in the world? 1464 05b5cc69ae4d2b4197774c773
5b5cc69ae4d2b4197774c773- 1Mandarin Chinesetrue
- 2Englishfalse
- 3Spanishfalse
- 4Hindifalse
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Answer : 1. "Mandarin Chinese"
Explanation :
Answer: A) Mandarin Chinese Explanation:
Q: "International Day for Disaster Reduction" was observed across the world on _____ ? 1463 05b5cc6c1e4d2b4197774db64
5b5cc6c1e4d2b4197774db64- 116 Octoberfalse
- 215 Octoberfalse
- 314 Octoberfalse
- 413 Octobertrue
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Answer : 4. "13 October"
Explanation :
Answer: D) 13 October Explanation: International Day for Disaster Reduction, held every 13 October, celebrates how people and communities around the world are reducing their exposure to disasters. The year 2017 focus is : Reducing the number of affected people by disasters by 2030.
Q: For which Novel Prominent Konkani writer Mahabaleshwar Sail will be awarded the Saraswati Samman for the year 2016 ? 1462 05b5cc6cae4d2b4197774dfc5
5b5cc6cae4d2b4197774dfc5- 1Hawthantrue
- 2Mandrafalse
- 3Chitt-Chetefalse
- 4None of the abovefalse
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Answer : 1. "Hawthan"
Explanation :
Answer: A) Hawthan Explanation:
Q: What gas makes up most of the atmosphere? 1462 05b5cc636e4d2b4197774ba48
5b5cc636e4d2b4197774ba48- 1Oxygenfalse
- 2Heliumfalse
- 3Nitrogentrue
- 4Carbondioxidefalse
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Answer : 3. "Nitrogen"
Explanation :
Answer: C) Nitrogen Explanation: Our atmosphere is made up of 78% Nitrogen, 21% Oxygen and 1% all other gases like argon, carbon dioxide, neon, and helium. So, Nitrogen makes up the majority of our atmosphere.