GATE Practice Question and Answer

Q: Buoyancy depends on 1745 0

  • 1
    the mass of the liquid displaced
    Correct
    Wrong
  • 2
    the mass of the body
    Correct
    Wrong
  • 3
    the depth to which the body is immersed
    Correct
    Wrong
  • 4
    the shaped of the body
    Correct
    Wrong
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Answer : 1. "the mass of the liquid displaced"
Explanation :

Answer: A) the mass of the liquid displaced Explanation: Buoyancy or Upthrust, is an upward force exerted by a fluid that opposes the weight of an immersed object. In a column of fluid, pressure increases with depth as a result of the weight of the overlying fluid.

Q: Write 0.125 as a percent %? 1744 0

  • 1
    12%
    Correct
    Wrong
  • 2
    12.5%
    Correct
    Wrong
  • 3
    13%
    Correct
    Wrong
  • 4
    13.5%
    Correct
    Wrong
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Answer : 2. "12.5%"
Explanation :

Answer: B) 12.5% Explanation: Here to convert 0.125 into % First convert to fractio Multiply and divide by 1000 => 0.125 x 10001000 = 1251000 = 18 => Now, in percentage18 x 100 = 12.5%

Q: What has a head and a tail but nobody? 1742 0

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Answer :
Explanation :

A Coin has a Head and tail but no body. Since the two sides of coin are called as heads and tails.

Q: If L exceeds K by 30%, then K is less than L by ? 1742 0

  • 1
    14 2/5 %
    Correct
    Wrong
  • 2
    23 1/3 %
    Correct
    Wrong
  • 3
    20 %
    Correct
    Wrong
  • 4
    16 %
    Correct
    Wrong
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Answer : 2. "23 1/3 %"
Explanation :

Answer: B) 23 1/3 % Explanation: K = 100 L = 130130------ 30100------- ? => 23 1/13 %

Q: photosynthesis takes place faster in 1742 0

  • 1
    darkness
    Correct
    Wrong
  • 2
    red light
    Correct
    Wrong
  • 3
    white light
    Correct
    Wrong
  • 4
    yellow light
    Correct
    Wrong
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Answer : 3. "white light"
Explanation :

Answer: C) white light Explanation: As far as the rate of photosynthesis is concerned, it is fastest in white light making the rate of photosynthesis maximum. After White, We Have Violet Light Where Photosynthesis Occur To A Higher Extent as It Has The Shortest Wavelength Hence Has The Max Energy.   So The Order Is  ::  white>violet>blue.

Q: How does molecular shape affect polarity? 1742 0

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Answer :
Explanation :

Polarity ::  The polarity of a molecule defines its other physical properties such as melting point, boiling point, surface tension, vapor pressure etc... Simply, polarity occurs when the electron distribution in a molecule is asymmetric. This results in a net dipole moment in the molecule. One end of the molecule is charged negative while the other gets a positive charge.   The polarization of a molecule greatly depends on the shape of the molecule. A diatomic molecule like HF mentioned above has no issue of shape. The net dipole moment is only due to the uneven distribution of electrons between the two atoms. However, when there are more than two atoms involved in making a bond, there are many complexities.   The water molecule is of bent shape. Therefore, when the two pair of electrons shared by oxygen with two hydrogen atoms is pulled towards oxygen, the net dipole moment results in the direction of the oxygen atom. There is no other force to cancel out the resultant dipole moment. Hence, the water molecule is highly polar.   Ammonia molecule is of a pyramid shape and the electronegative N atom pulls the electrons towards itself. The three N-H bonds are not in the same plane; hence the dipole moments created do not get canceled out. This makes ammonia a polar molecule.   However, the dipole moments sometimes get canceled due to the shape of the molecules, making the molecule non-polar. Carbon dioxide is such a molecule.

Q: Find the odd one in the number series given below ? 17, 9, 10, 18.5, 35, 90 1741 0

  • 1
    9
    Correct
    Wrong
  • 2
    10
    Correct
    Wrong
  • 3
    18.5
    Correct
    Wrong
  • 4
    90
    Correct
    Wrong
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Answer : 3. "18.5"
Explanation :

Answer: C) 18.5 Explanation: The given series pattern follows   17       9       10       18.5       35       90   × 0.5 + 0.5,   × 1 + 1,   × 1.5 + 1.5,   × 2 + 2,   × 2.5 + 2.5   So here    17x0.5 + 0.5 = 9   9x1 + 1 = 10   10x1.5 + 1.5 = 16.5   16.5x2 + 2 = 35   35x2.5 + 2.5 = 90   Here the odd man in the given series is 18.5

Q: Which of the Phrases (1), (2), (3) and (4) given below should replace the phrases printed in bold in the sentence to make it grammatically correct.    They claim that their employees are highly committing and disciplined. 1740 0

  • 1
    Have been highly committed
    Correct
    Wrong
  • 2
    Have high commitments
    Correct
    Wrong
  • 3
    Are highly committed
    Correct
    Wrong
  • 4
    No correction required
    Correct
    Wrong
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Answer : 3. "Are highly committed"
Explanation :

Answer: C) Are highly committed Explanation: As per the rule of adverb, the adverb is followed by the third form of verb.

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