GATE Practice Question and Answer

Q: The shadow zone exists because 904 0

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Answer :
Explanation :

The shadow zone is the area of the earth from angular distances of 104 to 140 degrees from a given earthquake that does not receive any direct P waves. The shadow zone results from S waves being stopped entirely by the liquid core and P waves being bent (refracted) by the liquid core. There are two types of Shadow zones: one for P waves and one for S waves.   P wave shadows between 104-140 degree, both sides; S wave shadow from 105 of one side to 105 of the other.

Q: Which of these is not a simple machine? 1539 0

  • 1
    a pair of scissors
    Correct
    Wrong
  • 2
    a lever
    Correct
    Wrong
  • 3
    a ramp
    Correct
    Wrong
  • 4
    the pulley
    Correct
    Wrong
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Answer : 1. "a pair of scissors"
Explanation :

Answer: A) a pair of scissors Explanation: Any of the basic mechanical devices for applying a force are called simple machines. There are 6 basic simple machines; the lever, the wheel and axle, the inclined plane, the wedge, the pulley, and the screw. Several of these simple machines are related to each other. But, each has a specific purpose in the world of doing work.

Q: The ratio of two positive numbers is 3 : 5 and the average of the number is 48. What is the product of numbers? 1227 0

  • 1
    3365
    Correct
    Wrong
  • 2
    2160
    Correct
    Wrong
  • 3
    1854
    Correct
    Wrong
  • 4
    1632
    Correct
    Wrong
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Answer : 2. "2160"
Explanation :

Answer: B) 2160 Explanation: Let the number be 3p and 5p ATQ, 8p = 2 x 48 p = 96/8 p = 12   The numbers are 36 and 60.   Hence, the product of the numbers = 36 x 60 = 2160.

Q: What element behaves most like magnesium? 1105 0

  • 1
    Silicon
    Correct
    Wrong
  • 2
    Strontium
    Correct
    Wrong
  • 3
    Sulphur
    Correct
    Wrong
  • 4
    Tin
    Correct
    Wrong
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Answer : 2. "Strontium"
Explanation :

Answer: B) Strontium Explanation: We know that, Elements in the same group of the periodic table have similar characteristics. Here Magnesium and Strontium shared some similar properties because they both belong to the same group. Sr is the chemical symbol for strontium which is a group two element; it has atomic number of 38.

Q: A compass always points to 1004 1

  • 1
    North
    Correct
    Wrong
  • 2
    Magnetic north
    Correct
    Wrong
  • 3
    Magnetic South
    Correct
    Wrong
  • 4
    South
    Correct
    Wrong
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Answer : 2. "Magnetic north"
Explanation :

Answer: B) Magnetic north Explanation: Wherever on earth we hold a compass, the needle points towards the magnetic North Pole. A compass is a great tool for navigation. Compass is widely used in aircrafts, ships, military services,...

Q: Pick the odd one out from the given number series? 21, 24, 33, 49, 74 2112 0

  • 1
    21
    Correct
    Wrong
  • 2
    24
    Correct
    Wrong
  • 3
    33
    Correct
    Wrong
  • 4
    49
    Correct
    Wrong
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Answer : 1. "21"
Explanation :

Answer: A) 21 Explanation: The given number series follows a pattern that, 19 + 12 = 20 (not 21)20 + 22 = 2424 + 32 = 3333 + 42 = 4949 + 52 = 74    Hence, the odd number in the given number series is 21.

Q: I have legs, but i cannot walk. Who am I? 915 0

  • 1
    Dragon flies
    Correct
    Wrong
  • 2
    Prawns
    Correct
    Wrong
  • 3
    House flies
    Correct
    Wrong
  • 4
    All of the above
    Correct
    Wrong
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Answer : 1. "Dragon flies"
Explanation :

Answer: A) Dragon flies Explanation: Dragon flies have legs but they cannot walk.

Q: The two kinds of Main Memory are 2606 1

  • 1
    Random and sequential
    Correct
    Wrong
  • 2
    ROM and RAM
    Correct
    Wrong
  • 3
    Primary and secondary
    Correct
    Wrong
  • 4
    All the above
    Correct
    Wrong
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Answer : 2. "ROM and RAM"
Explanation :

Answer: B) ROM and RAM Explanation: The main memory is defined as the central storage in a computer. (noun) An example of the main memory is where programs and data are kept when the processor is actively using them.   The main storage region of a computer, to which the central processor has immediate or direct access is of two kinds. They are :: RAM -- Random Access Memory ROM -- Read Only Memory.

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