CAT Practice Question and Answer

Q: Dry ice is an example of which process 2018 0

  • 1
    Condensation
    Correct
    Wrong
  • 2
    Evaporation
    Correct
    Wrong
  • 3
    Sublimation
    Correct
    Wrong
  • 4
    Freezing
    Correct
    Wrong
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Answer : 3. "Sublimation"
Explanation :

Answer: C) Sublimation Explanation: Sublimation is a process when a solid changes directly into gas instead changing into liquid first. Dry ice is an example of Sublimation process because it doesn't change into liquid CO2 and directly change into gaseous CO2 when heated.   Hence, Dry ice is an example of Sublimation process.

Q: _ po _ mp _ n _ _ onmpo_. 2018 0

  • 1
    opmpnm
    Correct
    Wrong
  • 2
    mponpo
    Correct
    Wrong
  • 3
    mnompn
    Correct
    Wrong
  • 4
    mnopnm
    Correct
    Wrong
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Answer : 3. "mnompn"
Explanation :

Answer: C) mnompn Explanation: The pattern 'mpon' is repeated.

Q: India’s first indigenously built floating dock (FDN-2) has launched on which shipyard  ? 2017 0

  • 1
    Kattupalli Shipyard
    Correct
    Wrong
  • 2
    Goa Shipyard
    Correct
    Wrong
  • 3
    Hindustan shipyard Ltd
    Correct
    Wrong
  • 4
    Bombay Dockyard
    Correct
    Wrong
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Answer : 1. "Kattupalli Shipyard"
Explanation :

Answer: A) Kattupalli Shipyard Explanation: India’s first indigenously built Floating Dock (FDN-2) for the Indian Navy has launched at the L&T Shipbuilding Yard at Kattupalli near Chennai, Tamil Nadu. The Floating Dock is 185 metres long and 40 metres wide and will enable docking of all kinds of vessels, including Naval ships and submarines (excepting aircraft carriers and tankers) of up to 8,000 tonnes displacement, with draughts of up to seven metres, during both day and night. FDN-2 was designed and built by Larsen & Toubro Ltd. (L&T) at a cost of Rs 468 crore.

Q: Thorndike was known for his work with 2017 0

  • 1
    Modeling
    Correct
    Wrong
  • 2
    a skinner box
    Correct
    Wrong
  • 3
    monkeys
    Correct
    Wrong
  • 4
    a puzzle box
    Correct
    Wrong
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Answer : 4. "a puzzle box"
Explanation :

Answer: D) a puzzle box Explanation: Edward Thorndike (1874 - 1949) is famous in psychology for his work on learning theory that lead to the development of operant conditioning within behaviorism. Thorndike (1898) studied learning in animals (usually cats). He devised a classic experiment in which he used a puzzle box to empirically test the laws of learning.

Q: Mirage is an example of 2017 0

  • 1
    Reflection of light & Refraction of light
    Correct
    Wrong
  • 2
    Dispersion of light
    Correct
    Wrong
  • 3
    Total Internal Reflection
    Correct
    Wrong
  • 4
    Refraction of light & Total Internal Reflection of light
    Correct
    Wrong
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Answer : 4. "Refraction of light & Total Internal Reflection of light"
Explanation :

Answer: D) Refraction of light & Total Internal Reflection of light Explanation: A Mirage is a naturally occurring optical phenomenon in which light rays bend to produce a displaced image of distant objects or the sky. It is caused due to Total internal Reflection. It is an optical illusion observed in deserts or hot summer days due to which a person sees a pond of water some distance ahead of him in which the surrounding objects appear inverted. How Mirage Forms:: 1. The temperature of other layers of atmosphere goes on decreasing as we go up.2. Therefore density and refractive index of air changes as one goes up.3. Thus a ray of light,gets refracted more and more away from the normal.4. At a particular angle when a ray of light exceeds critical angle, total internal reflection takes place and ray of light gets reflected in the same medium.5. when the reflected ray reaches our eye, it appears as coming from tree or sky .6. Hence the inverted image of tree creates an impression from a pond of water.

Q: Which of the following describes loyalists? 2017 0

  • 1
    They thought Patriots were too radical
    Correct
    Wrong
  • 2
    They decided to fight against the British
    Correct
    Wrong
  • 3
    They wanted to return to Britain
    Correct
    Wrong
  • 4
    They supported British taxation
    Correct
    Wrong
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Answer : 1. "They thought Patriots were too radical"
Explanation :

Answer: A) They thought Patriots were too radical Explanation: They thought Patriots were too radical is the statement which describes loyalists correctly.

Q: There are 5 consecutive odd numbers. If the difference between square of the average of first two odd number and the of the average last two odd numbers is 396, what is the smallest odd number? 2016 0

  • 1
    29
    Correct
    Wrong
  • 2
    27
    Correct
    Wrong
  • 3
    31
    Correct
    Wrong
  • 4
    33
    Correct
    Wrong
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Answer : 1. "29"
Explanation :

Answer: A) 29 Explanation: Let the five consecutive odd numbers be x-4, x-2, x, x+2, x+4 According to the question, Difference between square of the average of first two odd number and the of the average last two odd numbers is 396 i.e, x+3 and x-3 ⇒x + 32 - x - 32 = 396⇒ x2 + 9 + 6x - x2 + 6x - 9 = 396⇒ 12x = 396⇒ x = 33   Hence, the smallest odd number is 33 - 4 = 29.

Q: The sum of the digits of a two-digits number is 10,while when the digits are reversed, the number decreases by 54. Find the changed number ? 2016 0

  • 1
    28
    Correct
    Wrong
  • 2
    19
    Correct
    Wrong
  • 3
    37
    Correct
    Wrong
  • 4
    46
    Correct
    Wrong
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Answer : 1. "28"
Explanation :

Answer: A) 28 Explanation: Let the original number is 82 i.e 8 + 2 = 10 and when the digits are reversed i.e 28The difference is 82 - 28 = 54 i.e, the number is decreased by 54.

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