CAT Practice Question and Answer

Q: A six-digit number is formed by repeating a three-digit number; for example, 404404 or 415415 etc. Any number of this form is always exactly divisible by 1601 0

  • 1
    101
    Correct
    Wrong
  • 2
    901
    Correct
    Wrong
  • 3
    1001
    Correct
    Wrong
  • 4
    789
    Correct
    Wrong
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Answer : 3. "1001"
Explanation :

Answer: C) 1001 Explanation: Here by trial and error method, we can obseve that 404404 = 404 x 1001; 415415 = 415 x 1001, etc. So, any number of this form is divisible by 1001.

Q: When was Zoroastrianism founded? 1601 0

  • 1
    4th century BCE
    Correct
    Wrong
  • 2
    6th century BCE
    Correct
    Wrong
  • 3
    8th century BCE
    Correct
    Wrong
  • 4
    10th century BCE
    Correct
    Wrong
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Answer : 2. "6th century BCE"
Explanation :

Answer: B) 6th century BCE Explanation: Zoroastrianism is one of the world's oldest extant religions. It is the ancient pre-Islamic religion of Iran that survives there in isolated areas and, more prosperously, in India, where the descendants of Zoroastrian Iranian (Persian) immigrants are known as Parsis, or Parsees.   The Iranian prophet and religious reformer Zarathustra flourished before the 6th century BCE more widely known outside Iran as Zoroaster is traditionally regarded as the founder of the religion.   Zoroastrianism contains both monotheistic and dualistic features. It likely influenced the other major Western religions—Judaism, Christianity, and Islam.

Q: How does molecular shape affect polarity? 1600 0

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Answer :
Explanation :

Polarity ::  The polarity of a molecule defines its other physical properties such as melting point, boiling point, surface tension, vapor pressure etc... Simply, polarity occurs when the electron distribution in a molecule is asymmetric. This results in a net dipole moment in the molecule. One end of the molecule is charged negative while the other gets a positive charge.   The polarization of a molecule greatly depends on the shape of the molecule. A diatomic molecule like HF mentioned above has no issue of shape. The net dipole moment is only due to the uneven distribution of electrons between the two atoms. However, when there are more than two atoms involved in making a bond, there are many complexities.   The water molecule is of bent shape. Therefore, when the two pair of electrons shared by oxygen with two hydrogen atoms is pulled towards oxygen, the net dipole moment results in the direction of the oxygen atom. There is no other force to cancel out the resultant dipole moment. Hence, the water molecule is highly polar.   Ammonia molecule is of a pyramid shape and the electronegative N atom pulls the electrons towards itself. The three N-H bonds are not in the same plane; hence the dipole moments created do not get canceled out. This makes ammonia a polar molecule.   However, the dipole moments sometimes get canceled due to the shape of the molecules, making the molecule non-polar. Carbon dioxide is such a molecule.

Q: What gets bigger the more you take away? 1600 0

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Answer :
Explanation :

A Hole gets bigger and bigger as you take more away from it.

Q: How many three digit numbers 'abc' are formed where two of the three digits are same ? 1600 0

  • 1
    252
    Correct
    Wrong
  • 2
    648
    Correct
    Wrong
  • 3
    243
    Correct
    Wrong
  • 4
    900
    Correct
    Wrong
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Answer : 3. "243"
Explanation :

Answer: C) 243 Explanation: Digits are 0,1,2,3,4,5,6,7,8,9. So no. of digits are 10   First all possible case => 9(0 excluded) x 10 x 10 = 900   Second no repetition allowed =>9 x 9 x 8 = 648   Third all digits are same => 9 (111,222,333,444,555,666,777,888,999)   Three digit numbers where two of the three digits are same = 900 - 648 - 9 = 243 ;

Q: Manideep purchases 30kg of barley at the rate of 11.50/kg and 20kg at the rate of 14.25/kg. He mixed the two and sold the mixture in the shop. At what price per kg should he sell the mixture to make 30% profit to him ? 1599 0

  • 1
    15.84
    Correct
    Wrong
  • 2
    14.92
    Correct
    Wrong
  • 3
    13.98
    Correct
    Wrong
  • 4
    16.38
    Correct
    Wrong
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Answer : 4. "16.38"
Explanation :

Answer: D) 16.38 Explanation: Given, Manideep purchases 30kg of barley at the rate of 11.50/kg nad 20kg at the rate of 14.25/kg. Total cost of the mixture of barley = (30 x 11.50) + (20 x 14.25) => Total cost of the mixture = Rs. 630 Total kgs of the mixture = 30 + 20 = 50kg Cost of mixture/kg = 630/50 = 12.6/kg To make 30% of profit => Selling price for manideep = 12.6 + 30% x 12.6 => Selling price for manideep = 12.6 + 3.78 = 16.38/kg.

Q: Who is named as 'Captain of the year' in the 10th annual ESPNcricinfo Awards ? 1599 0

  • 1
    Quinton de Kock
    Correct
    Wrong
  • 2
    Hayley Williams
    Correct
    Wrong
  • 3
    Ben Stokes
    Correct
    Wrong
  • 4
    Virat Kohli
    Correct
    Wrong
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Answer : 4. "Virat Kohli"
Explanation :

Answer: D) Virat Kohli Explanation: Indian international cricketer Virat Kohli has named as the 'Captain of the Year' at the 10th annual ESPNcricinfo Awards. Kohli led India to nine wins out of 12 Tests in the year 2016. ♦ The ESPNcricinfo awards honour the best batting and bowling performances across the international formats of the game in the preceding calendar year.♦ This year ESPNcricinfo introduced awards for women’s cricket across all three international formats.

Q: Which Indian Anti Hunger activist will be honoured with the 2017 Queen’s Young Leaders award  ? 1597 0

  • 1
    Sachin Bansal
    Correct
    Wrong
  • 2
    Anil Agarwal
    Correct
    Wrong
  • 3
    Ankit Kawatra
    Correct
    Wrong
  • 4
    Kunal Bahl
    Correct
    Wrong
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Answer : 3. "Ankit Kawatra"
Explanation :

Answer: C) Ankit Kawatra Explanation: Indian anti-hunger activist Ankit Kawatra has honoured with the 2017 Queen’s Young Leaders award for his exceptional work in transforming the lives of others. Kawatra is among the 60 others from all 53 Commonwealth countries to be felicitated with the prestigious award by Queen Elizabeth (II) at a ceremony in Buckingham Palace in London on June 29, 2017. The honourees will also undergo a year-long mentoring and online learning by the University of Cambridge to build leadership capabilities and better their work towards the communities. He is the founder of Feeding India, a not-for profit organization that works towards solving problems of hunger, malnutrition and food wastage, mainly by redistributing extra food from restaurants, canteens, households, corporates etc. to help people in need.

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