CAT Practice Question and Answer

Q: K and L start a business jointly. K invests Rs.16000 for 8 months and L remains in the business for 4 months. Out of the total profit L claims 2/7th share. How much money is contributed by L? 1906 0

  • 1
    Rs. 13,204
    Correct
    Wrong
  • 2
    Rs. 14,521
    Correct
    Wrong
  • 3
    Rs. 12,800
    Correct
    Wrong
  • 4
    Rs. 15,000
    Correct
    Wrong
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Answer : 3. "Rs. 12,800"
Explanation :

Answer: C) Rs. 12,800 Explanation: Given share of L is 2/7 th of profit. Then, their profits are divided in to 5:2 ratio. Ratio of K and L is 16000×8x×4=52 x = Rs. 12,800.

Q: Magnetic domains normally occur in 1906 0

  • 1
    copper
    Correct
    Wrong
  • 2
    silver
    Correct
    Wrong
  • 3
    iron
    Correct
    Wrong
  • 4
    All of the above
    Correct
    Wrong
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Answer : 3. "iron"
Explanation :

Answer: C) iron Explanation: A magnetic domain is a region within a magnetic material in which the magnetization is in a uniform direction. This means that the individual magnetic moments of the atoms are aligned with one another and they point in the same direction.

Q: From a group of 7 boys and 6 girls, five persons are to be selected to form a team, so that at least 3 girls are there in the team. In how many ways can it be done? 1906 0

  • 1
    427
    Correct
    Wrong
  • 2
    531
    Correct
    Wrong
  • 3
    651
    Correct
    Wrong
  • 4
    714
    Correct
    Wrong
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Answer : 2. "531"
Explanation :

Answer: B) 531 Explanation: Given in the question that, there are 7 boys and 6 girls.  Team members = 5 Now, required number of ways in which a team of 5 having atleast 3 girls in the team =  6C3  x 7C2  + 6C4 x 7C1 + 6C5= 6x5x43x2x1 x 7x62x1 + 6x5x4x34x3x2x1 x 7 + 6x5x4x3x25x4x3x2x1= 420 + 105 + 6= 531.

Q: The purpose of choke in tube light is 1905 0

  • 1
    Induce high voltage
    Correct
    Wrong
  • 2
    Induce low resistance
    Correct
    Wrong
  • 3
    Induce high resistance
    Correct
    Wrong
  • 4
    Induce low voltage
    Correct
    Wrong
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Answer : 1. "Induce high voltage"
Explanation :

Answer: A) Induce high voltage Explanation: When the switch is ON, in a tube light choke is nothing but the coil/ballast ( inductor) which is used to induce the high voltage across it. as we know that inductor has property to induce high voltage for the brief period of time, this high voltage is required to ionize the gases in the starter. Then gas inside the starter gets ionized due to this full voltage and heats the bimetallic strip that is caused to be bent to connect to the fixed contact. Current starts flowing through the starter. Although the ionization potential of the neon is the little bit more than that of the argon but still due to small electrode gap high voltage gradient is appeared in the neon bulb and hence glow discharge is started first in a starter. As voltage gets reduced due to the current causes a voltage drop across the inductor, the strip cools and breaks away from the fixed contact. At that moment a large L di/dt voltage surge comes across the inductor at the time of breaking. This high valued surge comes across the tube light electrodes and strikes penning mixture (mixture argon gas and mercury vapor). Gas discharge process continues and current gets the path to flow through the tube light gas only due to low resistance as compared to the resistance of starter.

Q: What is black when you buy it, red when you use it, and gray when you throw it away? 1905 0

  • 1
    Shoe
    Correct
    Wrong
  • 2
    Charcoal
    Correct
    Wrong
  • 3
    Belt
    Correct
    Wrong
  • 4
    All the above
    Correct
    Wrong
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Answer : 2. "Charcoal"
Explanation :

Answer: B) Charcoal Explanation: It is Charcoal which is black when we buy it or when not being used. It gets red in appearance when put in use means to say when burning. And eventually when it's been consumed by fire or after getting burned out or used up, changes into ashes which look grey in color.

Q: ANBC full form is? 1905 0

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Answer :
Explanation :

ANBC Full Form is Adjusted Net Bank Credit. ANBC refers to Adjusted Net Bank Credit, is Net Bank Credit added to investments made by banks in non-SLR bonds (in held-to-maturity) or it is the credit equivalent of off-balance - sheet exposures, whichever is higher.   Net Bank Credit = Outstanding bank credits in India (-) Bills rediscounted with RBI/approved financial institutions.

Q: A man covers half of his journey by train at 60 km/hr, half of the remaining by bus at 30 km/hr and the rest by cycle at 10 km/hr. Find his average speed during the entire journey? 1904 0

  • 1
    32 kmph
    Correct
    Wrong
  • 2
    20 kmph
    Correct
    Wrong
  • 3
    18 kmph
    Correct
    Wrong
  • 4
    24 kmph
    Correct
    Wrong
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Answer : 4. "24 kmph"
Explanation :

Answer: D) 24 kmph Explanation: Let the total distance of the journey of a man = d kms Now, the average speed of the entire journey = dd120 + d120 + d40  = 24 kmph.

Q: Tertiary structure is NOT directly dependent on 1904 0

  • 1
    hydrogen bonds
    Correct
    Wrong
  • 2
    ionic bonds
    Correct
    Wrong
  • 3
    peptide bonds
    Correct
    Wrong
  • 4
    hydrophobic interactions
    Correct
    Wrong
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Answer : 3. "peptide bonds"
Explanation :

Answer: C) peptide bonds Explanation:

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