GATE Practice Question and Answer

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 ? 1460 0

  • 1
    He is
    Correct
    Wrong
  • 2
    Not agreeing
    Correct
    Wrong
  • 3
    To me.
    Correct
    Wrong
  • 4
    No error
    Correct
    Wrong
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Answer : 3. "To me."
Explanation :

Answer: C) To me. Explanation: Replace 'to' by 'with'.

Q: What is the value of a two–digit number? A. The sum of the digits is 15. B. The difference of the squares of the digits is 45. C. The difference of their digits is 3. 1459 0

  • 1
    B and C together are sufficient
    Correct
    Wrong
  • 2
    Any one pair of A and B, B and C or C and A is sufficient
    Correct
    Wrong
  • 3
    C and A together are sufficient
    Correct
    Wrong
  • 4
    A and B together are sufficient
    Correct
    Wrong
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Answer : 2. "Any one pair of A and B, B and C or C and A is sufficient"
Explanation :

Answer: B) Any one pair of A and B, B and C or C and A is sufficient Explanation: From the given data, Let the two gits of a number be x & y A) x + y = 15   B) x2 - y2 = 45 (x+y) (x - y) = 45   C) x - y = 3 From any 2 of the given 3 statements, we can find that 2 digit number as  2x = 18 => x = 9 => y = 6 Hence, 2 digit number is 96.   Any one pair of A and B, B and C or C and A is sufficient to find.

Q: The More You Have, The Less You See. What is it? 1459 0

  • 1
    Light
    Correct
    Wrong
  • 2
    Darkness
    Correct
    Wrong
  • 3
    Sight
    Correct
    Wrong
  • 4
    None
    Correct
    Wrong
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Answer : 2. "Darkness"
Explanation :

Answer: B) Darkness Explanation: The More You Have the Darkness, The Less You See i.e, visible less.

Q: I go around and in the house but never touches the house. What am I? 1458 0

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Answer :
Explanation :

Te Sun. From the time rising it goes around the house upto sunset, but never touches the house.

Q: Give the iupac name for the following compound? 1457 0

  • 1
    Sec-Butylcyclohexine
    Correct
    Wrong
  • 2
    Isopropylcyclohexane
    Correct
    Wrong
  • 3
    2-Cyclohexybutane
    Correct
    Wrong
  • 4
    None of the above
    Correct
    Wrong
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Answer : 2. "Isopropylcyclohexane"
Explanation :

Answer: B) Isopropylcyclohexane Explanation:

Q: What organelle allows some protists to detect light? 1457 0

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Answer :
Explanation :

An organelle called Eyespot allows some protists to detect light. It allows the cells to sense light direction and intensity and respond to it by swimming either towards the light (positive phototaxis) or away from the light (negative phototaxis).   Eyespot is a photoreceptive organelle found in the flagellate or (motile) cells of green algae and other unicellular photosynthetic organisms such as euglenids.   Eyespot-mediated light perception helps the cells in finding an environment with optimal light conditions for photosynthesis. Eyespots are the simplest and most common "eyes" found in nature, composed of photoreceptors and areas of bright orange-red pigment granules.

Q: What are the sides of the dna ladder made of 1455 0

  • 1
    nitrates and sugars
    Correct
    Wrong
  • 2
    sugars and hydrates
    Correct
    Wrong
  • 3
    sugars and phosphates
    Correct
    Wrong
  • 4
    phosphates and nitrates
    Correct
    Wrong
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Answer : 3. "sugars and phosphates"
Explanation :

Answer: C) sugars and phosphates Explanation: DNA is a double-stranded molecule twisted into a helix. The shape of DNA is a double helix, which is like a twisted ladder. The sides of the ladder are made of alternating sugar and phosphate molecules. Deoxyribose, which is a pentose, and a phosphate group are the two molecules together form the two sides of the DNA. The rungs of the ladder are pairs of 4 types of nitrogen bases.

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Answer : 1. "Only statement A is required"
Explanation :

Answer: A) Only statement A is required Explanation: From statement (A), 20b = (1/2) × b × h h = 40 cm.

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