IIT JEE Practice Question and Answer

Q: Coding-Decoding If Pour is wrtten as 4156Sware is written as 78269Clear is written as 3@926 Then what is the code for PEARL= ? 6636 0

  • 1
    429@6
    Correct
    Wrong
  • 2
    4962@
    Correct
    Wrong
  • 3
    4692@
    Correct
    Wrong
  • 4
    4926@
    Correct
    Wrong
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Answer : 4. "4926@"
Explanation :

Answer: D) 4926@ Explanation: Pour - 4156 => P = 4,  r = 6 Sware - 78269 => a =  2,  e = 9 Clear - 3@926 => l = @ => Pearl = 4926@

Q: HTML documents are saved in 6595 0

  • 1
    Machine language codes
    Correct
    Wrong
  • 2
    ASCII text
    Correct
    Wrong
  • 3
    Special binary format
    Correct
    Wrong
  • 4
    None of the above
    Correct
    Wrong
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Answer : 2. "ASCII text"
Explanation :

Answer: B) ASCII text Explanation: Word and WordPad can save documents as ASCII text and HTML, but this approach can lead to problems. NotePad should launch with a new document open. From the File pull-down menu, Select "Save As," save the file to the Desktop, and name the file using the ".html" extension (e.g., "home.html").

Q: The marks obtained by Vijay and Amith are in the ratio 4:5 and those obtained by Amith and Abhishek in the ratio of 3:2. The marks obtained by Vijay and Abhishek are in the ratio of ? 6572 0

  • 1
    4:5
    Correct
    Wrong
  • 2
    6:5
    Correct
    Wrong
  • 3
    3:2
    Correct
    Wrong
  • 4
    1:3
    Correct
    Wrong
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Answer : 2. "6:5"
Explanation :

Answer: B) 6:5 Explanation:     4:5    3:2   -------=> 12:15:10  12:10 => 6:5

Q: If 78K928L is divisible by 6, then which of the following can Q and R take ? 6547 0

  • 1
    K=2 & L=3
    Correct
    Wrong
  • 2
    K=1 & L=4
    Correct
    Wrong
  • 3
    K=1 & L=2
    Correct
    Wrong
  • 4
    K=3 & L=3
    Correct
    Wrong
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Answer : 2. "K=1 & L=4"
Explanation :

Answer: B) K=1 & L=4 Explanation: As per divisibility rule a number is divisible by 6 means it should be divisible by 2 and 3 case 1 : the divisibility rule for 2 is the number should be end with even number in this case R =2 & R=4 case 2 : The divisibility rule for 3 is the sum of numbers should be divisible by 3so if we take option (2) Q=1 & R=4 the sum is 39 if we take option (3) Q=1 & R=2 the sum is 37 So Option (2) is correct 39 is divided by 3

Q: Taps X and Y can fill a tank in 30 and 40 minutes respectively.Tap Z can empty the filled tank in 60 minutes.If all the three taps are kept open for one minute each,how much time will the taps take to fill the tank? 6508 0

  • 1
    48min
    Correct
    Wrong
  • 2
    72min
    Correct
    Wrong
  • 3
    24min
    Correct
    Wrong
  • 4
    None of these
    Correct
    Wrong
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Answer : 3. "24min"
Explanation :

Answer: C) 24min Explanation: Given taps X and Y can fill the tank in 30 and 40 minutes respectively. Therefore,   part filled by tap X in 1 minute = 1/30   part filled by tap Y in 1 minute = 1/40   Tap Z can empty the tank in 60 minutes. Therefore,   part emptied by tap Z in 1 minute = 1/60   Net part filled by Pipes X,Y,Z together in 1 minute = [1/30 +1/40 - 1/60] = 5/120 = 1/24   i.e., the tank can be filled in 24 minutes.

Q: A boatman can row 3 km against the stream in 20 minutes and return in 18 minutes. Find the rate of current ? 6495 0

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

Answer: D) 1/2 kmph Explanation: Speed in upstream = Distance / Time = 3 x 60/20 = 9 km/hr. Speed in downstream = 3 x 60/18 = 10 km/hr Rate of current = (10-9)/2 = 1/2 km/hr.

Q: What is one benefit of lifelong physical activity? 6475 0

  • 1
    high blood pressure
    Correct
    Wrong
  • 2
    increase in healthy eating habits
    Correct
    Wrong
  • 3
    high physiological age
    Correct
    Wrong
  • 4
    prevention of weight gain
    Correct
    Wrong
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Answer : 3. "high physiological age"
Explanation :

Answer: C) high physiological age Explanation:

Q: Thunder is to Lightning as Grape is to 6464 0

  • 1
    Wine
    Correct
    Wrong
  • 2
    Soil
    Correct
    Wrong
  • 3
    Seed
    Correct
    Wrong
  • 4
    Water
    Correct
    Wrong
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Answer : 3. "Seed"
Explanation :

Answer: C) Seed Explanation: Lightning produces thunder just as a seed will eventually produce a grape.

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