IIT JEE Practice Question and Answer

Q: Two trains running in opposite directions cross a man standing on the platform in 27 seconds and 17 seconds respectively and they cross each other in 23 seconds. The ratio of their speeds is  ? 1446 0

  • 1
    1 : 2
    Correct
    Wrong
  • 2
    3 : 1
    Correct
    Wrong
  • 3
    4 : 7
    Correct
    Wrong
  • 4
    3 : 2
    Correct
    Wrong
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Answer : 4. "3 : 2"
Explanation :

Answer: D) 3 : 2 Explanation: Let the speeds of the two trains be x m/sec and y m/sec respectively. Then, length of the first train = 27 x meters, and length of the second train = 17 y meters. (27 x + 17 y) / (x + y) = 23 => 27 x + 17 y = 23 x + 23 y => 4 x = 6 y => x/y = 3/2.

Q: Which of the following software firm will acquire Brilliant Basics, Product Design and Customer Experience (CX) company ? 1445 0

  • 1
    Infosys
    Correct
    Wrong
  • 2
    Nautics Technology
    Correct
    Wrong
  • 3
    Google
    Correct
    Wrong
  • 4
    Source code software co.
    Correct
    Wrong
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Answer : 1. "Infosys"
Explanation :

Answer: A) Infosys Explanation:

Q: What is the first thing that alcohol effects? 1445 0

  • 1
    Judgement
    Correct
    Wrong
  • 2
    Speech
    Correct
    Wrong
  • 3
    Vision
    Correct
    Wrong
  • 4
    Balance
    Correct
    Wrong
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Answer : 1. "Judgement"
Explanation :

Answer: A) Judgement Explanation: Alcohol impairs your judgement. Judgement is in your brain stupid and it impairs your brain.

Q: A man purchases two articles, on selling one at loss of 20% while the other at a profit of 25%, he gains the overall profit of 5% than find the ratio of their selling price ? 1444 0

  • 1
    8 : 62.5
    Correct
    Wrong
  • 2
    55 : 8
    Correct
    Wrong
  • 3
    8 : 65
    Correct
    Wrong
  • 4
    64.4 : 9
    Correct
    Wrong
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Answer : 1. "8 : 62.5"
Explanation :

Answer: A) 8 : 62.5 Explanation:                       Article I                   Article II                         -20                         25%                                        5%                         20%                       25%                                                4              :              5 Now, Selling of first article = (4-20%) = 0.8 Selling of second article = (5+25%) =  6.25 Therefore the ratio of selling price = 8 : 62.5

Q: Which of the following is known as the Electronic City of India? 1444 0

  • 1
    Hyderabad
    Correct
    Wrong
  • 2
    Mumbai
    Correct
    Wrong
  • 3
    Bengaluru
    Correct
    Wrong
  • 4
    Gurgaon
    Correct
    Wrong
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Answer : 3. "Bengaluru"
Explanation :

Answer: C) Bengaluru Explanation: Bengaluru city is known as the Electronic City of India. Because Electronic City is an IT hub in Anekal taluk of Bengaluru, Karnataka, India. It is one of India's largest electronic industrial parks in 3 phases i.e, in Konappana Agrahara and Doddathogur villages, Bengaluru.

Q: What is 15 as a decimal? 1444 0

  • 1
    0.333
    Correct
    Wrong
  • 2
    0.666
    Correct
    Wrong
  • 3
    0.200
    Correct
    Wrong
  • 4
    0.452
    Correct
    Wrong
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Answer : 3. "0.200"
Explanation :

Answer: C) 0.200 Explanation: Here I converted the original fraction to a fraction with the denominator being 10, because decimals can be written in the tenths place. Divide numerator and denominator with '2'15 x 22 = 210 = 0.2

Q: Who of the following appointed as head of Punjab National Bank  ? 1443 0

  • 1
    Dinabandu Mohapatra
    Correct
    Wrong
  • 2
    Usha Ananthasubramanian
    Correct
    Wrong
  • 3
    R A Narayan
    Correct
    Wrong
  • 4
    Sunil Mehta
    Correct
    Wrong
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Answer : 4. "Sunil Mehta"
Explanation :

Answer: D) Sunil Mehta Explanation: Dinabandu Mohapatra for - Bank of India Usha Ananthasubramanian  for - Allahabad Bank R A Sankara Narayan for - Vijaya Bank

Q: A goods truck travels from a place at a certain time and at fixed speed. After 6hrs another truck leaves the same place and move in same direction of uniform speed of 90kmph. The truck catches up the goods truck in 4hrs. Find the speed of the goods truck ? 1443 0

  • 1
    36 kmph
    Correct
    Wrong
  • 2
    32 kmph
    Correct
    Wrong
  • 3
    28 kmph
    Correct
    Wrong
  • 4
    34 kmph
    Correct
    Wrong
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Answer : 1. "36 kmph"
Explanation :

Answer: A) 36 kmph Explanation: Let the speed of goods truck be 'p' kmphDistance covered by goods truck in 10hrs (4+6) = Distance covered by other truck in 4 hrs. 10p = 4 x 90p = 36kmph.Therefore, the speed of the goods truck is p = 36 kmph.

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