IIT JEE Practice Question and Answer

Q: Choose the Antonym of the given word from the following options 'Jettison' 3334 0

  • 1
    Salvage
    Correct
    Wrong
  • 2
    Submerge
    Correct
    Wrong
  • 3
    Repent
    Correct
    Wrong
  • 4
    Descend
    Correct
    Wrong
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Answer : 1. "Salvage"
Explanation :

Answer: A) Salvage Explanation: 'Jettison' means to discard and 'salvage' means to rescue something discarded. Hence, 'salvage' is the word which is farthest in meaning to the given word 'Jettison'.

Q: Play is to actor as concert is to 3334 0

  • 1
    Musician
    Correct
    Wrong
  • 2
    percussion
    Correct
    Wrong
  • 3
    symphony
    Correct
    Wrong
  • 4
    piano
    Correct
    Wrong
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Answer : 1. "Musician"
Explanation :

Answer: A) Musician Explanation: An actor performs in a play. A musician performs at a concert. Choices b, c, and d are incorrect because none is people who perform.   Hence, Play is to actor as concert is to Musician.

Q: What should come in place of question mark (?) in the following number series?  132       156       ?         210          240          272 3326 0

  • 1
    196
    Correct
    Wrong
  • 2
    182
    Correct
    Wrong
  • 3
    199
    Correct
    Wrong
  • 4
    204
    Correct
    Wrong
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Answer : 2. "182"
Explanation :

Answer: B) 182 Explanation: The given series follows a logic that 11 x 12, 12 x 13, 13 x 14, 14 x 15, 15 x 16,... So the missing number is 13 x 14 = 182

Q: In what time will Rs. 3300 becomes Rs. 3399 at 6% per annum interest compounded half-yearly ? 3324 0

  • 1
    Quarter months
    Correct
    Wrong
  • 2
    Half year
    Correct
    Wrong
  • 3
    2 years
    Correct
    Wrong
  • 4
    1 year
    Correct
    Wrong
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Answer : 2. "Half year"
Explanation :

Answer: B) Half year Explanation: 3300 ----- 3% ↑ (1st time interval, 99) → 3399. Here, time interval is given as half-yearly i.e. 6 months.

Q: The brain of any computer system is 3323 1

  • 1
    CPU
    Correct
    Wrong
  • 2
    Memory
    Correct
    Wrong
  • 3
    Control
    Correct
    Wrong
  • 4
    ALU
    Correct
    Wrong
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Answer : 1. "CPU"
Explanation :

Answer: A) CPU Explanation: Central Processing Unit (CPU) is the brain of any computer system.

Q: '.bak' extension refers to what kind of file? 3319 0

  • 1
    Document
    Correct
    Wrong
  • 2
    Movie/Video file
    Correct
    Wrong
  • 3
    Backup file
    Correct
    Wrong
  • 4
    Audio file
    Correct
    Wrong
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Answer : 3. "Backup file"
Explanation :

Answer: C) Backup file Explanation: In computing, ".bak" is a filename extension commonly used to signify a backup copy of a file.

Q: Where is RAM located? 3319 0

  • 1
    Mother Board
    Correct
    Wrong
  • 2
    Expansion Board
    Correct
    Wrong
  • 3
    External Drive
    Correct
    Wrong
  • 4
    None
    Correct
    Wrong
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Answer : 1. "Mother Board"
Explanation :

Answer: A) Mother Board Explanation: RAM is located in The central processing unit (CPU), also called a processor, is located inside the computer case on the motherboard. It is sometimes called the brain of the computer, and its job is to carry out commands.

Q: Three taps P, Q and R can fill a tank in 12 hrs, 15 hrs and 20 hrs respectively. If P is open all the time and Q and R are open for one hour each alternately, starting with Q, then the tank will be full in how many hours ? 3319 0

  • 1
    9 hrs
    Correct
    Wrong
  • 2
    7 hrs
    Correct
    Wrong
  • 3
    13 hrs
    Correct
    Wrong
  • 4
    11 hrs
    Correct
    Wrong
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Answer : 2. "7 hrs"
Explanation :

Answer: B) 7 hrs Explanation: Given, P can fill in 12 hrs Q can fill in 15 hrs R can fill in 20 hrs => Volume of tank = LCM of 12, 15, 20 = 60 lit => P alone can fill the tank in 60/12 = 5 hrs => Q alone can fill the tank in 60/15 = 4 hrs => R alone can fill the tank in 60/20 = 3 hrs Tank can be filled in the way that (P+Q) + (P+R) + (P+Q) + (P+R) + .... => Tank filled in 2 hrs = (5+4) + (5+3) = 9 + 8 = 17 lit => In 6 hrs = 17 x 6/2 = 51 lit => In 7th hr = 51 + (5+4) = 51 + 9 = 60 lit => So, total tank will be filled in 7 hrs.

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