GATE Practice Question and Answer
8Q: 2 is to 55 as 6 is to 5917 05b5cc66de4d2b4197774bfe4
5b5cc66de4d2b4197774bfe4- 199true
- 244false
- 39false
- 433false
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Answer : 1. "99"
Explanation :
Answer: A) 99 Explanation: Given 2 is to 55 2 + 3 = 5 5 x 11 = 55 Similarly, 6 6 + 3 = 9 9 x 11 = 99 Hence, 2 is to 55 as 6 is to 99.
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 ? 5916 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: 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 ? 5895 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: Which is the gas used for making vegetables and vanaspathi from vegetable oils? 5886 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: Lichens are the best indicator of 5869 15b5cc6ade4d2b4197774d0ff
5b5cc6ade4d2b4197774d0ff- 1Air pollutiontrue
- 2Sound pollutionfalse
- 3Noise pollutionfalse
- 4Water pollutionfalse
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Answer : 1. "Air pollution"
Explanation :
Answer: A) Air pollution Explanation: 1. Lichens are plants that grow in exposed places such as rocks or tree bark. 2. Lichens are widely used as environmental indicators or bio-indicators. They can be used as air pollution indicators, especially of the concentration of sulfur-di-oxide in the atmosphere. 3. They need to be very good at absorbing water and nutrients to grow there.
Q: Which of these relationships is true of an uncharged atom? 5846 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: Two persons start running simultaneously around a circular track of length 300 m from the same point at speeds of 15 km/hr and 25 km/hr. When will they meet for the first time any where on the track if they are moving in opposite directions ? 5846 05b5cc6e5e4d2b4197774ecf2
5b5cc6e5e4d2b4197774ecf2- 127 sectrue
- 231 secfalse
- 323 secfalse
- 429 secfalse
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Answer : 1. "27 sec"
Explanation :
Answer: A) 27 sec Explanation: Time taken to meet for the first time anywhere on the track = length of the track / relative speed = 300 / (15 + 25)5/18 = 300x 18 / 40 x 5 = 27 seconds.
Q: 'P' walked 1 km towards south direction and turned 90oACW and walked 2 km. Then he turned his left and walked 1 km and then he turned his right and walked 2 km. After that he turned 90o ACW and walked 3 km. How far is he from the starting point ? 5836 05b5cc6cee4d2b4197774e23c
5b5cc6cee4d2b4197774e23c- 15 kmtrue
- 24 kmfalse
- 32 kmfalse
- 40 kmfalse
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Answer : 1. "5 km"
Explanation :
Answer: A) 5 km Explanation: