CAT Practice Question and Answer

Q: Pipe K fills a tank in 30 minutes. Pipe L can fill the same tank 5 times as fast as pipe K. If both the pipes were kept open when the tank is empty, how much time will it take for the tank to overflow ? 2852 0

  • 1
    3 minutes
    Correct
    Wrong
  • 2
    2 minutes
    Correct
    Wrong
  • 3
    4 minutes
    Correct
    Wrong
  • 4
    5 minutes
    Correct
    Wrong
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Answer : 4. "5 minutes"
Explanation :

Answer: D) 5 minutes Explanation: Let the total capacity of tank be 90 liters.Capacity of tank filled in 1 minute by K = 3 liters.Capacity of tank filled in 1 minute by L = 15 liters.Therefore, capacity of the tank filled by both K and L in 1 minute = 18 liters.Hence, time taken by both the pipes to overflow the tank = 90/18 = 5 minutes.

Q: If 10 men take 15 days to complete a work. In how many days will 37 men complete the work? 2850 0

  • 1
    3 days
    Correct
    Wrong
  • 2
    4 days
    Correct
    Wrong
  • 3
    5 days
    Correct
    Wrong
  • 4
    6 days
    Correct
    Wrong
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Answer : 2. "4 days"
Explanation :

Answer: B) 4 days Explanation: Given 10 men take 15 days to complete a work => Total mandays = 15 x 10 = 150 Let the work be 150 mandays. => Now 37 men can do 150 mandays in 150/37 =~ 4 days

Q: Which is the most accurate statement about trade? 2844 0

  • 1
    Trade makes some nations better off and others worse off
    Correct
    Wrong
  • 2
    Trading for a good can make a nation better off only if the nation cannot produce that good itself
    Correct
    Wrong
  • 3
    Trade helps rich nations and hurts poor nations
    Correct
    Wrong
  • 4
    Trade can make every nation better off
    Correct
    Wrong
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Answer : 4. "Trade can make every nation better off"
Explanation :

Answer: D) Trade can make every nation better off Explanation:

Q: Is B2+ Paramagnetic or Diamagnetic? 2842 0

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Answer :
Explanation :

B2+ is a Paramagnetic.  The filled orbitals are σ(1s)22, σ∗(1s)22, σ(2s)22, σ∗(2s)22. The half-filled orbitals are π(2pxx) and π(2pyy). Since it posses 2 unpaired electrons, it is Paramagnetic in nature.

Q: Which city is located on the banks of the river Mula-Mutha? 2841 0

  • 1
    Pune
    Correct
    Wrong
  • 2
    Nagpur
    Correct
    Wrong
  • 3
    Ahmedabad
    Correct
    Wrong
  • 4
    Surat
    Correct
    Wrong
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Answer : 1. "Pune"
Explanation :

Answer: A) Pune Explanation: The Mula-Mutha is a river in India, formed by the confluence of the Mula and Mutha rivers in the city of Pune, which later meets the Bhima River, which itself later meets the Krishna River and finally emptying to the Bay of Bengal.

Q: The basic operations performed by a computer are 2826 0

  • 1
    Logical operation
    Correct
    Wrong
  • 2
    Storage and relative
    Correct
    Wrong
  • 3
    Arithmetic operation
    Correct
    Wrong
  • 4
    All the above
    Correct
    Wrong
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Answer : 4. "All the above"
Explanation :

Answer: D) All the above Explanation: The basic operations performed by a computer are Arithmetic operation, Logical operation and Storage and relative.

Q: What will come in place of question mark(?) in the following number series ? 6859       5832     ?      4096     3375 2824 0

  • 1
    4589
    Correct
    Wrong
  • 2
    4913
    Correct
    Wrong
  • 3
    5013
    Correct
    Wrong
  • 4
    5169
    Correct
    Wrong
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Answer : 2. "4913"
Explanation :

Answer: B) 4913 Explanation: The given series follows a pattern that, 19 x 19 x 19 = 6859 18 x 18 x 18 = 5832 17 x 17 x 17 = 4913 16 x 16 x 16 = 4096 15 x 15 x 15 = 3375 So, the missing number in the given series = 4913

Q: What has teeth but cannot bite? 2824 0

  • 1
    Comb
    Correct
    Wrong
  • 2
    Saw
    Correct
    Wrong
  • 3
    Zipper
    Correct
    Wrong
  • 4
    Gear
    Correct
    Wrong
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Answer : 1. "Comb"
Explanation :

Answer: A) Comb Explanation: Saw, Zipper and Gear have teeth but can bite us. Comb have teeth but cannot bite.

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