CAT Practice Question and Answer

Q: Which of the following is not a compound? 1612 0

  • 1
    Brass
    Correct
    Wrong
  • 2
    Quick lime
    Correct
    Wrong
  • 3
    Marble
    Correct
    Wrong
  • 4
    Soda ash
    Correct
    Wrong
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Answer : 1. "Brass"
Explanation :

Answer: A) Brass Explanation: Among the given options Brass is not a compound. Since it is an alloy, it is a mixture.    The smallest part of a compound is called a molecule. It has a unique composition that is always the same. Compound is a substance that consists of two or more elements.

Q: Breeding and management of bees is called 2064 0

  • 1
    Pisciculture
    Correct
    Wrong
  • 2
    Sericulture
    Correct
    Wrong
  • 3
    Silviculture
    Correct
    Wrong
  • 4
    Apiculture
    Correct
    Wrong
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Answer : 4. "Apiculture"
Explanation :

Answer: D) Apiculture Explanation: Breeding and management of bees is called Apiculture.   A beekeeper or apiarist keeps bees in order to collect their honey and other products that the hive produces (including beeswax, propolis, flower pollen, bee pollen, and royal jelly), to pollinate crops, or to produce bees for sale to other beekeepers. A location where bees are kept is called an 'apiary' or 'bee yard.'

Q: What is always coming but never arrives? 1717 0

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Answer :
Explanation :

It is Tomorrow. It always be tomorrow which represents coming but never arrives.

Q: Which of the following vitamin helps in clotting of blood? 1263 0

  • 1
    Vitamin K
    Correct
    Wrong
  • 2
    Vitamin D
    Correct
    Wrong
  • 3
    Vitamin B1
    Correct
    Wrong
  • 4
    Vitamin B2
    Correct
    Wrong
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Answer : 1. "Vitamin K"
Explanation :

Answer: A) Vitamin K Explanation: Vitamin K helps in clotting of blood. It is used by the body to help blood clot.   Warfarin (Coumadin) is used to slow blood clotting. By helping the blood clot, vitamin K might decrease the effectiveness of warfarin (Coumadin).

Q: What was the symbol of death of gautama buddha? 1392 0

  • 1
    Stupa
    Correct
    Wrong
  • 2
    Bodhi tree
    Correct
    Wrong
  • 3
    Lion
    Correct
    Wrong
  • 4
    Chaitya
    Correct
    Wrong
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Answer : 1. "Stupa"
Explanation :

Answer: A) Stupa Explanation: Stupa represents the symbol of death of Gautama Buddha. On the other hand, Bodhi Tree is the symbol of nirvana of Gautama Buddha.

Q: What has two hands but no arms or legs? 1794 0

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Answer :
Explanation :

A Clock has 3 hands i.e, an Hour hand, a Minute hand and a Seconds hand.

Q: Solve the Puzzle? 1807 0

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Answer :
Explanation :

From the assumption and trial and error method, last three digits sum must leave the same digit as the answer. It is possible only if the answer must be units digit number leaving tens digit as carry. And the possible 3rd digit is 5. Since 5 + 5 + 5 = 15  Now, 2nd step is  1 + x + x + x = 5 => 3x = 4 It is possible with x = 8. 8 + 8 + 8 + 1 = 25 leaving 2 as carry.  Now, 3rd step is 2 + x + x + x = 5 => x = 1   Hence, the three dgits are 1, 8, 5. 185 + 185 + 185 = 555.

Q: Brightness of bulb depends on voltage or current? 992 0

  • 1
    Current
    Correct
    Wrong
  • 2
    Voltage
    Correct
    Wrong
  • 3
    Both A & B
    Correct
    Wrong
  • 4
    None
    Correct
    Wrong
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Answer : 3. "Both A & B"
Explanation :

Answer: C) Both A & B Explanation: Brightness of bulb depends on both voltage and current. The brightness depends on power. Since we know that  Power (P) = Voltage x Current = V I So whether you increase the current or the voltage the brightness will increase.   Example Illustration:  If you connect a long bulb and a round bulb in series, the long bulb glows but the round bulb does not. Both of them have the same current flowing through them (they are in series) but the long bulb has a greater voltage across it because it has more resistance (even though V= IR is not obeyed exactly, voltage drop does depend on the resistance). If you connect a round bulb and a long bulb in parallel, however, it is the round bulb that is brighter because now the voltage across both bulbs is the same but the current is larger through the round bulb (smaller resistance).   Hence, the brightness of a bulb depends on power i.e, both voltage and current.

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