GATE Practice Question and Answer

Q: Pointing towards a photograph kiran said to chotu, "I am the only daughter of this lady and her son is your maternal uncle " How is the kiran related to chotu's father  ? 2378 0

  • 1
    Cousin
    Correct
    Wrong
  • 2
    Daughter
    Correct
    Wrong
  • 3
    Sister
    Correct
    Wrong
  • 4
    Wife
    Correct
    Wrong
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Answer : 4. "Wife"
Explanation :

Answer: D) Wife Explanation:   So, the speaker is the mother of chotu. Kiran is wife of chotu's father. Chotu's father is not shown in the diagram.

Q: What can you catch but not throw? 2372 0

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Answer :
Explanation :

A cold or flu illness.

Q: The difference between the time taken by two trains to travel a distance of 350 km is 2 hours 20 minutes. If the difference between their speeds is 5 km/hr, what is the speed of faster train ? 2372 0

  • 1
    36 kmph
    Correct
    Wrong
  • 2
    30 kmph
    Correct
    Wrong
  • 3
    34 kmph
    Correct
    Wrong
  • 4
    40 kmph
    Correct
    Wrong
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Answer : 2. "30 kmph"
Explanation :

Answer: B) 30 kmph Explanation: Let the speed of the faster train be 'S' kmph   Then speed of the slower train will be '(S-5)' kmph   Time taken by faster train = 350/S hrs   Time taken by slower train = 350/(S-5) hrs  350s-5 - 350s = 2 hrs 20 min = 213 = 73   => S = 30 km/hr.

Q: Which of the following has the highest frequency? 2370 0

  • 1
    Cosmic rays
    Correct
    Wrong
  • 2
    X-rays
    Correct
    Wrong
  • 3
    Radio waves
    Correct
    Wrong
  • 4
    Microwaves
    Correct
    Wrong
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Answer : 1. "Cosmic rays"
Explanation :

Answer: A) Cosmic rays Explanation:

Q: A circular piece of thin wire is converted into a rhombus of side 11 cm. Find the diameter of the circular piece? 2367 0

  • 1
    28 cm
    Correct
    Wrong
  • 2
    3.5 cm
    Correct
    Wrong
  • 3
    7 cm
    Correct
    Wrong
  • 4
    14 cm
    Correct
    Wrong
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Answer : 4. "14 cm"
Explanation :

Answer: D) 14 cm Explanation: Circular piece is 4 x 11 = 44 cm long, Then Circumference of circle is given by, 44 = pi x D, where D is the diameter D = 44 / pi Take pi = 22 / 7, then D = 44 / (22/7) = (44 x 7) / 22 D = 14 cm.

Q: Is blood homogeneous or heterogeneous? 2365 0

  • 1
    Homogeneous
    Correct
    Wrong
  • 2
    Heterogeneous
    Correct
    Wrong
  • 3
    Both A & B
    Correct
    Wrong
  • 4
    None of the above
    Correct
    Wrong
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Answer : 2. "Heterogeneous"
Explanation :

Answer: B) Heterogeneous Explanation: Blood is a heterogeneous mixture because the blood cells are physically separate from the blood plasma. The cells have different properties than the plasma. The cells can be separated from the plasma by centrifuging, which is a physical change.

Q: Which solution is most concentrated? 2364 0

  • 1
    6 g of solute in 10 ml of solution
    Correct
    Wrong
  • 2
    20.5 g of solute in 50 ml of solution
    Correct
    Wrong
  • 3
    30 g of solute in 120 ml of solution
    Correct
    Wrong
  • 4
    2.6 g of solute in 2 ml of solution
    Correct
    Wrong
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Answer : 4. "2.6 g of solute in 2 ml of solution"
Explanation :

Answer: D) 2.6 g of solute in 2 ml of solution Explanation: A concentrated solution will contain the most solute molecules per solvent molecules. Here in the given options, 1)  6/10 = 0.6 2) 20.5/50 = 0.41 3) 30/120 = 0.25 4) 2.6/2 = 1.3   Hence, option D) is most concentrated.

Q: There are 600 Kabaddi players 4% wear knee band on one leg. Of the remaining, 25% wear knee bands on both legs. How many players don't wear a knee band ? 2364 0

  • 1
    426
    Correct
    Wrong
  • 2
    428
    Correct
    Wrong
  • 3
    415
    Correct
    Wrong
  • 4
    432
    Correct
    Wrong
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Answer : 4. "432"
Explanation :

Answer: D) 432 Explanation: There are 600 Kabaddi players4% wear knee band on one legRemaining players = 600 x 0.96 = 576Of the remaining, 25% wear knee bands on both leg and Of the remaining, 75% do not wear knee bands .So players not wearing knee bands = 0.75 x 576 = 576 x 3/4 = 144 x 3 = 432.

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