GATE Practice Question and Answer
8Q: Which is the gas used for making vegetables and vanaspathi from vegetable oils? 6350 05b5cc6b1e4d2b4197774d346
5b5cc6b1e4d2b4197774d346- 1Hydrogentrue
- 2Nitrogenfalse
- 3Argonfalse
- 4Heliumfalse
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Answer : 1. "Hydrogen"
Explanation :
Answer: A) Hydrogen Explanation: Hydrogen gas is used for making vegetables and vanaspathi from vegetable oils. As it is colourless, odourless, tasteless, flammable gaseous substance, it is added to oils to make them more solid or spreadable. The use of hydrogenation helps to prolong the shelf life of the food and maintain flavour stability.
Q: Amar can do a piece of work in 10 days. He works at it for 4 days and then Arun finishes it in 9 days. In how many days can Amar and Arun together finish the work ? 6334 05b5cc6d6e4d2b4197774e66a
5b5cc6d6e4d2b4197774e66a- 14 daysfalse
- 28 daysfalse
- 33 daysfalse
- 46 daystrue
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Answer : 4. "6 days"
Explanation :
Answer: D) 6 days Explanation: 4/10 + 9/x = 1 => x = 15 Then both can do in 1/10 + 1/15 = 1/6 => 6 days
Q: Convent : Cloister :: Eyrie : ? 6282 05b5cc694e4d2b4197774c489
5b5cc694e4d2b4197774c489- 1Showfalse
- 2Openfalse
- 3Hidefalse
- 4Nesttrue
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Answer : 4. "Nest"
Explanation :
Answer: D) Nest Explanation: Here the first two words are synonyms. Similarly, Eyrie means a large nest. So, the synonym of Eyrie is nest. Hence, Convent : Cloister :: Eyrie : Nest.
Q: Which of these relationships is true of an uncharged atom? 6276 05b5cc688e4d2b4197774c35a
5b5cc688e4d2b4197774c35a- 1The atomic mass is equal to the atomic number.false
- 2The number of electrons is equal to the number of neutrons.false
- 3The number of protons is equal to the number of electrons.true
- 4The atomic mass is equal to the number of electrons.false
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Answer : 3. "The number of protons is equal to the number of electrons."
Explanation :
Answer: C) The number of protons is equal to the number of electrons. Explanation: The number of protons is equal to the number of electrons. That is the number of positive charges is equal to the number of negative charges.
Q: A group of 10 representatives is to be selected out of 12 seniors and 10 juniors. In how many different ways can the group be selected if it should have at least one senior ? 6265 05b5cc6eee4d2b4197774eed7
5b5cc6eee4d2b4197774eed7- 1²²C₁₀ + 1false
- 2²²C₉ + ¹⁰C₁false
- 3²²C₁₀false
- 4²²C₁₀ - 1true
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Answer : 4. "²²C₁₀ - 1"
Explanation :
Answer: D) ²²C₁₀ - 1 Explanation: The total number of ways of forming the group of ten representatives is ²²C₁₀. The total number of ways of forming the group that consists of no seniors is ¹⁰C₁₀ = 1 way The required number of ways = ²²C₁₀ - 1
Q: There are seven persons P, Q, R, S, T, U and V up on a ladder(not in this order).P is further up than T but is lower than R. Q is in the middle. V is between P and Q. T is between Q and U. If U is between T and S, the person on the bottom step of the ladder will be ? 6249 05b5cc777e4d2b419777500c0
5b5cc777e4d2b419777500c0- 1Strue
- 2Rfalse
- 3Ufalse
- 4Tfalse
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Answer : 1. "S"
Explanation :
Answer: A) S Explanation: Here as given Q is in the middle and it satisfies all other conditions given in the question.
Q: The Capacity of a Communication Channel is Measured in 6240 05b5cc6afe4d2b4197774d1c9
5b5cc6afe4d2b4197774d1c9- 1Band ratefalse
- 2Band widthtrue
- 3Data flowfalse
- 4Bit capacityfalse
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Answer : 2. "Band width"
Explanation :
Answer: B) Band width Explanation: The path that data takes from source to destination is called a Channel. A channel is a communication medium. A channel has a certain capacity for transmitting information. The "capacity" of a channel is the theoretical upper-limit to the bit rate over a given channel that will result in negligible errors. Channel capacity is often measured by its Bandwidth in Hz or its data rate in bits per second.
Q: Two trains are moving in the same direction at 72 kmph and 36 kmph. The faster train crosses a girl sitting at window seat in the slower train in 32 seconds. Find the length of the faster train ? 6239 05b5cc6d8e4d2b4197774e769
5b5cc6d8e4d2b4197774e769- 1170 mfalse
- 2100 mfalse
- 3270 mfalse
- 4320 mtrue
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Answer : 4. "320 m"
Explanation :
Answer: D) 320 m Explanation: Relative speed = (72 - 36) x 5/18 = 2 x 5 = 10 mps.Distance covered in 32 sec = 32 x 10 = 320 m. The length of the faster train = 320 m.