CAT Practice Question and Answer

Q: Two solutions have milk & water in the ratio 7:5 and 6:11. Find the proportion in which these two solutions should Be mixed so that the resulting solution has 1 part milk and 2 parts water ? 4347 0

  • 1
    7 : 12
    Correct
    Wrong
  • 2
    8 : 13
    Correct
    Wrong
  • 3
    9 : 4
    Correct
    Wrong
  • 4
    2 : 5
    Correct
    Wrong
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Answer : 2. "8 : 13"
Explanation :

Answer: B) 8 : 13 Explanation: To get the solution that contains 1 part of milk and two parts of water,they must be mixed in the ratio as7x+6x/5y+11y = 1/226x = 16yx/y = 16/26x/y = 8/13

Q: A man swims downstream 72 km and upstream 45 km taking 9 hours each time; what is the speed of the current  ? 4341 0

  • 1
    1 kmph
    Correct
    Wrong
  • 2
    3.2 kmph
    Correct
    Wrong
  • 3
    1.5 kmph
    Correct
    Wrong
  • 4
    2 kmph
    Correct
    Wrong
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Answer : 3. "1.5 kmph"
Explanation :

Answer: C) 1.5 kmph Explanation: 72 --- 9 ? ---- 1 => Down Stream = 8 45 ---- 9 ? ---- 1 => Up Stream = 5 Speed od current S = ? S = (8 - 5)/2 = 1.5 kmph.

Q: Which observation proves that a cell is a eukaryote? 4338 0

  • 1
    It contains DNA
    Correct
    Wrong
  • 2
    It contains ribosomes
    Correct
    Wrong
  • 3
    It has a cell membrane
    Correct
    Wrong
  • 4
    It has DNA inside a nucleus
    Correct
    Wrong
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Answer : 4. "It has DNA inside a nucleus"
Explanation :

Answer: D) It has DNA inside a nucleus Explanation: Eukaryotic cells all have a nucleus. Eukaryotes are organisms that are multicellular, although there are some examples of single cellular eukaryotes. So eukaryotic cells can be either cell with a nucleus or a eukaryotic organism's cell. The most important feature to judge whether it has nucleus membrane. And for other choices, they are the common features of eukaryote and prokaryote.

Q: Which one of the following is not a true snake ? 4335 0

  • 1
    Blind snake
    Correct
    Wrong
  • 2
    Glass snake
    Correct
    Wrong
  • 3
    Sea snake
    Correct
    Wrong
  • 4
    Tree snake
    Correct
    Wrong
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Answer : 2. "Glass snake"
Explanation :

Answer: B) Glass snake Explanation: Glass snake is a lizard.

Q: Bureaucracy literally means a system of government by 4333 0

  • 1
    Elected representative
    Correct
    Wrong
  • 2
    Officials
    Correct
    Wrong
  • 3
    Group of landlords
    Correct
    Wrong
  • 4
    Nominated representative
    Correct
    Wrong
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Answer : 2. "Officials"
Explanation :

Answer: B) Officials Explanation: A bureaucracy is a way of administratively organizing large numbers of people who need to work together. The term bureaucracy literally means "rule by desks or offices". Organizations in the public and private sector, including universities and governments, rely on bureaucracies to function.

Q: The shadow zone exists because 4319 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: Transition : Change :: Immobility :  ? 4315 0

  • 1
    Stillness
    Correct
    Wrong
  • 2
    Liveliness
    Correct
    Wrong
  • 3
    Action
    Correct
    Wrong
  • 4
    Busyness
    Correct
    Wrong
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Answer : 1. "Stillness"
Explanation :

Answer: A) Stillness Explanation: Given Transition is to Change, and we know that Transition and change are Synonyms. Similarly, Immobility means not moving and synonym of immobility are motionlessness, stillness,...   Hence, Transition is to change as immobility is to stillness.

Q: The ratio of the incomes of Pavan and Amar is 4 : 3 and the ratio of their expenditures are 3:2. If each person saves Rs. 1889, then find the income of Pavan? 4310 0

  • 1
    6548
    Correct
    Wrong
  • 2
    5667
    Correct
    Wrong
  • 3
    7556
    Correct
    Wrong
  • 4
    8457
    Correct
    Wrong
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Answer : 3. "7556"
Explanation :

Answer: C) 7556 Explanation: Let ratio of the incomes of Pavan and Amar be 4x and 3x and Ratio of their expenditures be 3y and 2y 4x - 3y = 1889 ......... I and 3x - 2y = 1889 ...........II I and II y = 1889 and x = 1889 Pavan's income = 7556

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