GATE Practice Question and Answer
8Q: The total of the ages of Ashok, Akbar and Anil is 65 years. What was the total of their ages six years ago ? 1561 05b5cc723e4d2b4197774f695
5b5cc723e4d2b4197774f695- 159false
- 243false
- 357false
- 447true
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Answer : 4. "47"
Explanation :
Answer: D) 47 Explanation: Let their ages be x, y, zHence given that x + y + z = 65Now, six years ago x age is x - 6, y is y - 6 and that of z is z - 6Then the sum of their ages six years ago is (x + y + z) - (6 + 6 + 6) = 65 - 18 = 47
Q: In how many different ways can the letters of the word 'POVERTY' be arranged ? 1561 05b5cc6b4e4d2b4197774d4bb
5b5cc6b4e4d2b4197774d4bb- 12520false
- 25040true
- 31260false
- 4Nonefalse
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Answer : 2. "5040"
Explanation :
Answer: B) 5040 Explanation: The 7 letters word 'POVERTY' be arranged in 7P7 ways = 7! = 5040 ways.
Q: The capacity of a water heater is measured in 1560 05b5cc69de4d2b4197774c888
5b5cc69de4d2b4197774c888- 1Gallonsfalse
- 2Litersfalse
- 3Metersfalse
- 4Both A & Btrue
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Answer : 4. "Both A & B"
Explanation :
Answer: D) Both A & B Explanation: The capacity of a water heater is measured in Gallons or Liters. In the USA, it is measured in Gallons and in India, we measure it in Liters. Hence, if the capacity of the water heater is 15 gallons or 15 liters, then it says that it can hold 15 gallons or 15 liters of water.
Q: Manish completes a work in 20 days. After 8 days Sriram joined the work. In how many days will the work be completed ? Statements : I. Sriram takes twice the time than Manish to complete the work.II. Sriram completes half the work in 15 days. 1560 05b5cc6c6e4d2b4197774de22
5b5cc6c6e4d2b4197774de22- 1Statement I alone is sufficient to answer the questionfalse
- 2Statement II alone is sufficient to answer the questionfalse
- 3Either the statements I & II is sufficient to answer the questiontrue
- 4Neither the statements I & II is sufficient to answer the questionfalse
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Answer : 3. "Either the statements I & II is sufficient to answer the question"
Explanation :
Answer: C) Either the statements I & II is sufficient to answer the question Explanation: From statement I, Time taken by Sriram to complete the work = 40 days From statement II, Time taken by Sriram to complete the wok = 30 days So from both either by statement I or statement II we can find the time to complete the work.
Q: Read each sentence to find out whether there is any grammatical error in it. The error, if any, will be in one part of the sentence. In which part of the sentence there is an error ? 1560 05b5cc6e9e4d2b4197774ee37
5b5cc6e9e4d2b4197774ee37- 1He isfalse
- 2Not agreeingfalse
- 3To me.true
- 4No errorfalse
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Answer : 3. "To me."
Explanation :
Answer: C) To me. Explanation: Replace 'to' by 'with'.
Q: Is Cube a polygon? 1559 05b5cc6ace4d2b4197774d0ca
5b5cc6ace4d2b4197774d0ca- 1TRUEfalse
- 2FALSEtrue
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Answer : 2. "FALSE"
Explanation :
Answer: B) FALSE Explanation: False. Cube is not a Polygon. Because polygon is a two dimensional figure and can be drawn on a flat surface whereas Cube is three dimensional figure and cannot be drawn on a flat surface.
Q: A train 125 m long passes a man, running at 5 km/hr in the same direction in which the train is going, in 10 seconds. The speed of the train is ? 1558 05b5cc6dae4d2b4197774e8a5
5b5cc6dae4d2b4197774e8a5- 145 kmphfalse
- 225 kmphfalse
- 330 kmphfalse
- 450 kmphtrue
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Answer : 4. "50 kmph"
Explanation :
Answer: D) 50 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 'S' km/hr. Then, relative speed = (S - 5) km/hr. S - 5 = 45 => S = 50 km/hr.
Q: Which phase change is an example of an exothermic process? 1558 05b5cc690e4d2b4197774c44a
5b5cc690e4d2b4197774c44a- 1Liquid to Solidfalse
- 2Gas to Solidfalse
- 3Gas to Liquidfalse
- 4All the abovetrue
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Answer : 4. "All the above"
Explanation :
Answer: D) All the above Explanation: Processes that require or give off heat will be limited to changes of state, known as phase changes, and changes in chemical constitution, or chemical reactions. Changes of state involve a solid melting, a liquid freezing, a liquid boiling or a gas condensing. An exothermic process is one that gives off heat, which is transferred to the surroundings. An endothermic process is a reaction which heat has to be supplied to the system from the surroundings. Here in all the given options, heat is taken away from them to change there phase. Liquid to Solid --- Freezing Gas to Liquid --- Condensation Gas to Solid --- Deposition are all examples of exothermic processes.