GATE Practice Question and Answer
8Q: A cistern is normally filled in 8 hours but takes two hours longer to fill because of a leak in its bottom. If the cistern is full, the leak will empty it in ? 1885 05b5cc6e5e4d2b4197774ed2e
5b5cc6e5e4d2b4197774ed2e- 120 hrstrue
- 228 hrsfalse
- 336 hrsfalse
- 440 hrsfalse
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Answer : 1. "20 hrs"
Explanation :
Answer: A) 20 hrs Explanation: 1/8 - 1/x = 1/10 => x = 40 hrs
Q: In which of the following organelles does photosynthesis take place? 1885 05b5cc6a7e4d2b4197774ce27
5b5cc6a7e4d2b4197774ce27- 1Miochondriafalse
- 2Chloroplasttrue
- 3Central Vacuolefalse
- 4Ribosomefalse
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Answer : 2. "Chloroplast"
Explanation :
Answer: B) Chloroplast Explanation: Chloroplasts use energy from light to transform carbon dioxide and water into sugar and oxygen. A green pigment located in membranes within the chloroplasts of plants and algae and in the membranes of certain prokaryotes.
Q: If 6 (P's Capital ) = 8 ( Q's Capital ) = 12 ( R's Capital ) , then out of the total profit of Rs 4650 , R will receive ? 1885 05b5cc6fee4d2b4197774f161
5b5cc6fee4d2b4197774f161- 1Rs. 1033.33true
- 2Rs. 1024false
- 3Rs. 1148.14false
- 4Rs. 1245.32false
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Answer : 1. "Rs. 1033.33"
Explanation :
Answer: A) Rs. 1033.33 Explanation: Let P's capital = p, Q's capital = q and R's capital = r.Then 6p = 8q = 12r=> 3p = 4q = 6r=>q = 3p/4r = 3p/6 = p/2P : Q : R = p : 3p/4 : p/2= 4 : 3 : 2R's share = 4650 * (2/9) = 150*6 = Rs. 1033.33.
Q: What will come in place of the question mark (?) in the following number series ? 12, 24, 26.5, 79.5, ?, 330 1884 05b5cc6c1e4d2b4197774db5f
5b5cc6c1e4d2b4197774db5f- 1211false
- 2101.5false
- 382.5true
- 499false
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Answer : 3. "82.5"
Explanation :
Answer: C) 82.5 Explanation: The given series 12 24 26.5 79.5 ? 330 follows a pattern that, 12 x 2 = 24 24 + 2.5 = 26.5 26.5 x 3 = 79.5 79.5 + 3 = 82.5 82.5 x 4 = 330 Hence, the missing number is 82.5
Q: Which term is a type of detail? 1884 05b5cc675e4d2b4197774c110
5b5cc675e4d2b4197774c110- 1chronologytrue
- 2prosefalse
- 3stylefalse
- 4statisticfalse
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Answer : 1. "chronology"
Explanation :
Answer: A) chronology Explanation: In chronology, the sequence of events from the latest to the oldest events or vice versa is laid. In this case, the details of how a particular event or place or thought developed through time is detailed in a chronology. Hence, the term chronology is a type of detail.
Q: Which of the following has the highest entropy? 1882 05b5cc669e4d2b4197774bf31
5b5cc669e4d2b4197774bf31- 1Hydrogentrue
- 2Diamondfalse
- 3Liquid nitrogenfalse
- 4Mercuryfalse
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Answer : 1. "Hydrogen"
Explanation :
Answer: A) Hydrogen Explanation: Entropy is a measure of disorder . It will be maximum in gases followed by liquids and least in solids. Hence, here the gas is only hydrogen and it has the highest entropy.
Q: With an average speed of 40 km/hr, a train reaches its destination in time. If it goes with an average speed of 35 km/hr, it is late by 15 minutes. Find the length of the total journey? 1880 05b5cc662e4d2b4197774be9c
5b5cc662e4d2b4197774be9c- 170 kmstrue
- 260 kmsfalse
- 345 kmsfalse
- 430 kmsfalse
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Answer : 1. "70 kms"
Explanation :
Answer: A) 70 kms Explanation: Let the time taken by train be 't' hrs. Then, 40t = 35t + 1560 40t = 35t + 35/4 t = 7/4 hrs Therefore, Required length of the total journey d = s x t = 40 x 7/4 = 70 kms.
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 ? 1879 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.