IIT JEE Practice Question and Answer

Q: In a certain code language, 'how can you go' is written as 'ja da ka pa', 'can you come here' is written as 'na ka sa ja' and 'cone and go' is written as 'ra pa sa'. How is 'here' written in that code ? 4704 0

  • 1
    na
    Correct
    Wrong
  • 2
    ja
    Correct
    Wrong
  • 3
    sa
    Correct
    Wrong
  • 4
    None
    Correct
    Wrong
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Answer : 1. "na"
Explanation :

Answer: A) na Explanation: From the given information : how can you go = ja da ka pa....(1)can you come here = na ka sa ja...(2)come and go = ra pa sa....(3)from (1)&(2), can you = ja ka...(4)from (2)&(3), come = sa...(5)Using (4)&(5) in (2), we get here = na.

Q: Central processing unit is combination of 4699 0

  • 1
    Arithmetic and Control unit
    Correct
    Wrong
  • 2
    Control and Output unit
    Correct
    Wrong
  • 3
    Control and Storage unit
    Correct
    Wrong
  • 4
    Arithmetic logic and input unit
    Correct
    Wrong
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Answer : 1. "Arithmetic and Control unit"
Explanation :

Answer: A) Arithmetic and Control unit Explanation:

Q: Find the missing number in the given series ? 15, 51, 216, 1100, ?, 46452 4698 0

  • 1
    5660
    Correct
    Wrong
  • 2
    6560
    Correct
    Wrong
  • 3
    6750
    Correct
    Wrong
  • 4
    6630
    Correct
    Wrong
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Answer : 4. "6630"
Explanation :

Answer: D) 6630 Explanation: Let first no. be "k" and multiple be "l"...start value of y with 3then,[(k x y) + {l x (l-1)}]Thus, we get 15 x 3 + 3 x 2 = 5151 x 4 + 4 x 3 = 216216 x 5 + 5 x 4 = 11001100 x 6 + 6 x 5 = 66306630 x 7 + 7 x 6 = 46452 Therefore, the missing number is 6630.

Q: In how many years, Rs. 200 will produce the same interest @ 5 % as Rs. 900 produce in 2 years @ 3 ½ %  ? 4697 0

  • 1
    5.2 yrs
    Correct
    Wrong
  • 2
    7 yrs
    Correct
    Wrong
  • 3
    7.9 yrs
    Correct
    Wrong
  • 4
    6.3 yrs
    Correct
    Wrong
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Answer : 4. "6.3 yrs"
Explanation :

Answer: D) 6.3 yrs Explanation: P = Rs. 900, R = 3 ½ % = 7/2 %, T = 2 years.  Therefore,  S.I. = PTR/100 S.I. = Rs. (900 x 7/2 x 2/100) = Rs. 63 Now, P = Rs. 200, S.I. = Rs. 63, R = 5 % Time = ((100 x 63) / (200 x 5) ) years = 6.3 years.

Q: A can write 32 pages in 6 hours and B can write 40 pages in 5 hours. If they write together, in how many hours they can write 110 pages ? 4693 0

  • 1
    7 hrs
    Correct
    Wrong
  • 2
    6 hrs 10 min
    Correct
    Wrong
  • 3
    5 hrs 25min
    Correct
    Wrong
  • 4
    8 hrs 15 min
    Correct
    Wrong
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Answer : 4. "8 hrs 15 min"
Explanation :

Answer: D) 8 hrs 15 min Explanation: A can write in 1hour = 32/6 pages Similarly, B in 1 hour = 40/5 pages Together (A+B) in 1 hour = 32/6 + 40/5 = 40/3 So, A+B write 40/3 pages in 1 hour A+B write 110 pages in (3/40) x 110 Hours = 8 hours 15 min.

Q: Man : Biography :: Nation : ? 4692 0

  • 1
    History
    Correct
    Wrong
  • 2
    Leader
    Correct
    Wrong
  • 3
    Story
    Correct
    Wrong
  • 4
    Nationalism
    Correct
    Wrong
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Answer : 1. "History"
Explanation :

Answer: A) History Explanation: Detailed description of a man's life is Biography. Similarly, detailed description of a Nations is called History.

Q: What was the day on 2nd Jan 1901 ? 4692 0

  • 1
    Tuesday
    Correct
    Wrong
  • 2
    Wednesday
    Correct
    Wrong
  • 3
    Monday
    Correct
    Wrong
  • 4
    Thursday
    Correct
    Wrong
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Answer : 2. "Wednesday"
Explanation :

Answer: B) Wednesday Explanation: 2nd Jan 1901 means(1900 years and 2 day)Now, 1600 years have 0 odd day300 years have 1 odd day2 days has 2 odd dayTotal no. of odd days = 0 + 1 + 2 = 3 daysHence, the day on 2nd Jan 1901 was Wednesday.

Q: Bill : Law :: ? : Insect 4663 0

  • 1
    Pupa
    Correct
    Wrong
  • 2
    Stage
    Correct
    Wrong
  • 3
    Larva
    Correct
    Wrong
  • 4
    Bird
    Correct
    Wrong
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Answer : 3. "Larva"
Explanation :

Answer: C) Larva Explanation: A Bill becomes a Law; a Larva becomes an insect. (Or) A Bill turns into a law; a Larva turns into an Insect.

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