IIT JEE Practice Question and Answer
8Q: A sum is divided among K, L and M in such a way that for each rupee K gets, L gets 45 paisa and M gets 30 paisa. If the share of L is Rs. 27, what is the total amount ? 1990 05b5cc6e0e4d2b4197774eb66
5b5cc6e0e4d2b4197774eb66- 1Rs. 159false
- 2Rs. 96false
- 3Rs. 147false
- 4Rs. 105true
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Answer : 4. "Rs. 105"
Explanation :
Answer: D) Rs. 105 Explanation: K : L : M = 100 : 45 : 30 = 20 : 9 : 6 Given L share is 27 => 9 ------ 27 35 ------ ? => 105
Q: A person got Rs.48 more when he invested a certain sum at compound interest instead of simple interest for two years at 8% p.a. Find the sum ? 2196 05b5cc6e0e4d2b4197774eb61
5b5cc6e0e4d2b4197774eb61- 1Rs.8000false
- 2Rs.6500false
- 3Rs.7500true
- 4Rs.5000false
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Answer : 3. "Rs.7500"
Explanation :
Answer: C) Rs.7500 Explanation: p=d×1002R2 Where d is difference, r is rate of interest. => (48 x 100 x 100) / 8 x 8 = Rs.7500
Q: 5% people of a village in India died by dengue, 15% of the remainder left the village on account of fear. If now the population is reduced to 3553, how much was it in the beginning ? 2716 05b5cc6e0e4d2b4197774eb5c
5b5cc6e0e4d2b4197774eb5c- 14400true
- 23100false
- 32800false
- 45600false
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Answer : 1. "4400"
Explanation :
Answer: A) 4400 Explanation: Let 'P' be the original population at the beginning P x (95/100) x (85/100) = 3553 P = 4400.
Q: Two trains, one from Hyderabd to Bangalore and the other from Bangalore to Hyderabad, start simultaneously. After they meet, the trains reach their destinations after 9 hours and 16 hours respectively. The ratio of their speeds is ? 3812 05b5cc6e0e4d2b4197774eb57
5b5cc6e0e4d2b4197774eb57- 13 : 4false
- 24 : 3true
- 32 : 3false
- 43 : 2false
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Answer : 2. "4 : 3"
Explanation :
Answer: B) 4 : 3 Explanation: Let us name the trains as A and B. Then, (A's speed) : (B's speed) = √b : √a = √16 : √9 = 4:3
Q: The Mudumalai National Park is located in which state ? 2382 25b5cc6e0e4d2b4197774eb4d
5b5cc6e0e4d2b4197774eb4d- 1Chattisgarhfalse
- 2Haryanafalse
- 3Tamil Nadutrue
- 4Karnatakafalse
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Answer : 3. "Tamil Nadu"
Explanation :
Answer: C) Tamil Nadu Explanation: The Mudumalai National Park (MNP) is located about 150 kilometres north-west of Coimbatore city in Tamil Nadu. The protected area is home to several endangered and vulnerable species including Indian elephant, Bengal tiger, gaur and Indian leopard. There are at least 266 species of birds in the sanctuary, including critically endangered Indian white-rumped vulture and long-billed vulture.
Q: Two pipes A and B can fill a tank in 15 min and 20 min respectively. Both the pipes are opened together but after 4 min, pipe A is turned off. What is the total time required to fill the tank ? 1765 05b5cc6e0e4d2b4197774eb48
5b5cc6e0e4d2b4197774eb48- 115 min 20 sec.false
- 216 min 40 sec.false
- 313 min 10 sec.false
- 414 min 40 sec.true
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Answer : 4. "14 min 40 sec."
Explanation :
Answer: D) 14 min 40 sec. Explanation: Part filled in 4 minutes = 4(1/15 + 1/20) = 7/15 Remaining part = 1 - 7/15 = 8/15 Part filled by B in 1 minute = 1/20 1/20 : 8/15 :: 1 : k k = (8/15 )x 1 x 20 = 10( 2/3) min = 10 min 40 sec. The tank will be full in (4 min. + 10 min. 40 sec) = 14 min 40 sec.
Q: Which of the following is a non metal that remains liquid at room temperature ? 1943 05b5cc6e0e4d2b4197774eb43
5b5cc6e0e4d2b4197774eb43- 1Chlorinefalse
- 2Phosphorousfalse
- 3Brominetrue
- 4Heliumfalse
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Answer : 3. "Bromine"
Explanation :
Answer: C) Bromine Explanation:
Q: The most populous city in the world is ? 1673 05b5cc6e0e4d2b4197774eb3e
5b5cc6e0e4d2b4197774eb3e- 1Tokyotrue
- 2Parisfalse
- 3Pekingfalse
- 4Londonfalse
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Answer : 1. "Tokyo"
Explanation :
Answer: A) Tokyo Explanation: