GATE Practice Question and Answer
8Q: 3, 12, 5, ? 1660 05b5cc6b9e4d2b4197774d725
5b5cc6b9e4d2b4197774d725- 136false
- 226false
- 330true
- 424false
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Answer : 3. "30"
Explanation :
Answer: C) 30 Explanation: 332 + 3 = 12552 + 5 = 30
Q: 9 17 11 19 13 What Are The Next Three Numbers In The Given Number Series? 1660 05b5cc6bae4d2b4197774d78f
5b5cc6bae4d2b4197774d78f- 117, 10, 18false
- 219, 14, 23false
- 321, 15, 23true
- 419, 13, 22false
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Answer : 3. "21, 15, 23"
Explanation :
Answer: C) 21, 15, 23 Explanation: Given number series is 9 17 11 19 13 Here the pattern is 9 9 + 8 = 17 17 - 6 = 11 11 + 8 = 19 19 - 6 = 13 13 + 8 = 21 21 - 6 = 15 15 + 8 = 23
Q: In what ratio must a merchant mix two varieties of oils worth Rs. 60/kg and Rs. 65/kg, so that by selling the mixture at Rs. 68.20/kg, he may gain 10% ? 1659 05b5cc6c6e4d2b4197774de5e
5b5cc6c6e4d2b4197774de5e- 12:3false
- 24:3false
- 33:4false
- 43:2true
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Answer : 4. "3:2"
Explanation :
Answer: D) 3:2 Explanation: Let he mixes the oils in the ratio = x : y Then, the cost price of the oils = 60x + 65y Given selling price = Rs. 68.20 => Selling price = 68.20(x+y) Given profit = 10% = SP - CP => 10/100 (60x + 65y) = 68.20(x+y)-(60x + 65y) => 6x + 6.5y = 8.20x + 3.20y =>2.2x = 3.3y => x : y = 3 : 2
Q: If the first and third letters in the word NECESSARY were interchanged, also the fourth and the sixth letters, and the seventh and the ninth letters, which of the follwing would be the seventh letter from the left ? 1659 05b5cc771e4d2b4197774ffb2
5b5cc771e4d2b4197774ffb2- 1Efalse
- 2Sfalse
- 3Rfalse
- 4Ytrue
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Answer : 4. "Y"
Explanation :
Answer: D) Y Explanation: we interchange the positions of the letters as shown below: The new letter sequence is CENSSEYRA.Clearly, the seventh letter from the left is Y.
Q: Express 0.875 and 0.375 as a Fraction. 1659 05b5cc6b3e4d2b4197774d3ed
5b5cc6b3e4d2b4197774d3ed- 13/11 & 7/11false
- 27/9 & 9/13false
- 37/8 & 3/8true
- 47/9 & 9/11false
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Answer : 3. "7/8 & 3/8"
Explanation :
Answer: C) 7/8 & 3/8 Explanation: Given 0.875 and 0.375 0.875 :: After decimal point there are 3 digits 875 Now, mutiply and divide 0.875 with 1000 0.875 x 10001000 = 8751000 Now, this can be reduced to fraction 78Therefore, 0.875 as fraction = 78 Similarly, 0.375 :: After decimal point there are 3 digits 375 Now, mutiply and divide 0.375 with 1000 0.375 x 10001000 = 3751000Now, this can be reduced to fraction 38Therefore, 0.375 as fraction = 38
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 ? 1658 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: Wind and solar energy are examples of 1658 05b5cc698e4d2b4197774c65c
5b5cc698e4d2b4197774c65c- 1Non renewablefalse
- 2Renewabletrue
- 3Unsustainablefalse
- 4Limitedfalse
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Answer : 2. "Renewable"
Explanation :
Answer: B) Renewable Explanation: Many types of renewable energy resources such as wind and solar energy are constantly replenished and will never run out.
Q: What name is given to the bond between water molecules? 1657 05b5cc622e4d2b4197774b7c9
5b5cc622e4d2b4197774b7c9- 1Polarfalse
- 2Polar covalentfalse
- 3Hydrogentrue
- 4None of the abovefalse
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Answer : 3. "Hydrogen"
Explanation :
Answer: C) Hydrogen Explanation: The name given to the bond between water molecules is a hydrogen bond. These bonds occur between the slightly negative oxygen of one water molecule and the slightly positive hydrogen of another water molecule. Hydrogen bonding gives water special physical properties. The differences in electronegativity between hydrogen and oxygen lead to an unequal sharing of electrons. Electronegativity measures how strongly an atom attracts electrons. Oxygen, with its higher electronegativity, pulls on the shared electrons more, giving the oxygen atom a partial net negative charge. The shared electrons spend less time with the hydrogen atoms; therefore, the hydrogen regions of water have partial positive charges.