IIT JEE Practice Question and Answer

Q: What is harder to catch the faster you run? 2086 0

  • 1
    Breathe
    Correct
    Wrong
  • 2
    Fire
    Correct
    Wrong
  • 3
    Water
    Correct
    Wrong
  • 4
    Time
    Correct
    Wrong
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Answer : 1. "Breathe"
Explanation :

Answer: A) Breathe Explanation: It is very hard to catch breathe when you run fast.

Q: Which process allows water to enter the atmosphere? 2085 0

  • 1
    Transpiration
    Correct
    Wrong
  • 2
    Respiration
    Correct
    Wrong
  • 3
    Condensation
    Correct
    Wrong
  • 4
    Evaporation
    Correct
    Wrong
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Answer : 4. "Evaporation"
Explanation :

Answer: D) Evaporation Explanation: Evaporation is the process that allows water to enter into the atmosphere. Sunlight turns liquid water into water vapor which then rises higher into the atmosphere and forms into clouds.   Plants, too, help water get into the atmosphere through a process called transpiration.

Q: Dronacharya Award Is Given To 2084 0

  • 1
    Sports Editors
    Correct
    Wrong
  • 2
    Umpires
    Correct
    Wrong
  • 3
    Sportsmen
    Correct
    Wrong
  • 4
    Coaches
    Correct
    Wrong
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Answer : 4. "Coaches"
Explanation :

Answer: D) Coaches Explanation: The Dronacharya Award, formally known as Dronacharya Award for Outstanding Coaches in Sports and Games, is sports training honour of the Republic of India. The award is named after Drona, often referred as "Dronacharya" or "Guru Drona", a character from the Sanskrit epic Mahabharata of ancient India.

Q: Can you spot the missing number? 2084 0

  • 1
    3
    Correct
    Wrong
  • 2
    6
    Correct
    Wrong
  • 3
    Both A & B
    Correct
    Wrong
  • 4
    None of the above
    Correct
    Wrong
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Answer : 3. "Both A & B"
Explanation :

Answer: C) Both A & B Explanation: The given number puzzle can be soved in two ways. Logic 1 :: Row 1  - 2 x 3 = 6 , 6 x 3 = 18 Row 2  - 4 x 5 = 20 , 20 x 5 = 100 Row 3  - 3 x 7 = 21 , 21 x 7 = 147   Hence, the missing number could be 3.   Logic 2 :: Row 1 - 6 x (2+1) = 18 Row 2 - 20 x (4+1) = 100 Row 3 - 21 x (6+1) = 147   Hence, the missing number could be 6.   Therefore, 3 or 6 is the right answer.

Q: Which one of the following does not contain Silver ? 2084 0

  • 1
    Horn Silver
    Correct
    Wrong
  • 2
    Ruby Silver
    Correct
    Wrong
  • 3
    Lunar Caustic
    Correct
    Wrong
  • 4
    German Silver
    Correct
    Wrong
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Answer : 4. "German Silver"
Explanation :

Answer: D) German Silver Explanation:

Q: Which is better investment : 11% stock at 143 (or) 9 3/4% stock at 117 ? 2083 0

  • 1
    Both are equally good
    Correct
    Wrong
  • 2
    9 3/4% stock at 117
    Correct
    Wrong
  • 3
    Cannot be compared, as the total amount of investment is not given
    Correct
    Wrong
  • 4
    11% stock at 143
    Correct
    Wrong
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Answer : 2. "9 3/4% stock at 117"
Explanation :

Answer: B) 9 3/4% stock at 117 Explanation: Let investment in each case be Rs. (143 x 117).   Income in 1st case = Rs.11143 x 143 x 117 = Rs. 1287.Income in 2nd case = Rs.394×117 x 143 x 117= Rs. 1394.25   Clearly, 9 3/4% stock at 117 is better.

Q: Mary is 12 years younger to Pinky. After 3 years, the ratio of their ages will be 5:8. If the present age of Sam is the sum of ages of Mary and Pinky, then what was the age of Sam 15 years back ? 2082 0

  • 1
    31 years
    Correct
    Wrong
  • 2
    37 years
    Correct
    Wrong
  • 3
    46 years
    Correct
    Wrong
  • 4
    29 years
    Correct
    Wrong
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Answer : 1. "31 years"
Explanation :

Answer: A) 31 years Explanation: Let the present age of Pinky be x years   Then the age of Mary is x - 12 years   After 3 years,   Ratio of  MaryPinky = x - 9x + 3 = 58   8x - 72 = 5x +15   => 3x = 87   => x = 29   => Age of Pinky = 29 years   => Age of Mary = 29 - 12 = 17 years   Present age of Sam = 29 + 17 = 46   Before 15 years Sam age = 46 - 15 = 31 years.

Q: Ram sell his goods 25% cheaper than Shyam and 25% dearer than Bram. How much % is Bram's good cheaper than Shyam ? 2082 0

  • 1
    60%
    Correct
    Wrong
  • 2
    40%
    Correct
    Wrong
  • 3
    50%
    Correct
    Wrong
  • 4
    30%
    Correct
    Wrong
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Answer : 2. "40%"
Explanation :

Answer: B) 40% Explanation: Lets say shyam sells at 100,   Since Ram sells 25% cheaper than Shyam,   Therefor Ram sells at less than 25% of100 or 75 rs.   Ram sells 25% dearer than Bram or 125% of Ram =100% of Bram or   125% of x (say x price of bram )=75rs.or 100% of x =60rs.hence price of bram is 60rs.   now Bram's good is cheaper than Shyam's as (100-60)x100/100% or 40%.   Hence Brams Good is 40% cheaper than that of Shyam's good.

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