IIT JEE Practice Question and Answer

Q: Find the next number in the given number series? 11, 5.5, 10, 6.5, 9, ? 1997 0

  • 1
    6.5
    Correct
    Wrong
  • 2
    7.5
    Correct
    Wrong
  • 3
    8.5
    Correct
    Wrong
  • 4
    10.5
    Correct
    Wrong
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Answer : 2. "7.5"
Explanation :

Answer: B) 7.5 Explanation: The given number series follows a pattern that 11 11 - 5.5 = 5.5 5.5 + 4.5 = 10 10 - 3.5 = 6.5 6.5 + 2.5 = 9 9 - 1.5 = 7.5   Hence, the next number in the given number series is 7.5.

Q: In a certain store, the profit is 320% of the cost. If the cost increases by 25% but the selling price remains constant, approximately what percentage of the selling price is the profit ? 1996 0

  • 1
    60%
    Correct
    Wrong
  • 2
    50%
    Correct
    Wrong
  • 3
    70%
    Correct
    Wrong
  • 4
    45%
    Correct
    Wrong
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Answer : 3. "70%"
Explanation :

Answer: C) 70% Explanation: Let C.P.= Rs. 100. Then, Profit = Rs. 320, S.P. = Rs. 420. New C.P. = 125% of Rs. 100 = Rs. 125New S.P. = Rs. 420. Profit = Rs. (420 - 125) = Rs. 295 Required percentage = (295/420) * 100 = 70%(approx)

Q: What type of macromolecule is DNA? 1996 0

  • 1
    Proteins
    Correct
    Wrong
  • 2
    Carbohydrates
    Correct
    Wrong
  • 3
    Nucleic acids
    Correct
    Wrong
  • 4
    All of the above
    Correct
    Wrong
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Answer : 3. "Nucleic acids"
Explanation :

Answer: C) Nucleic acids Explanation: DNA stands for Deoxyribo nucleic acid. It is a nucleic acid made up of monomeric unit called Nucleotide. A nucleotide consist of - a) Sugar - Deoxyribose in DNA ( ribose in RNA) b) An organic base- Adenine, cytosine, guanine.

Q: Cancer is caused by 1996 0

  • 1
    Loss of immunity of cells
    Correct
    Wrong
  • 2
    Uncontrolled meiosis
    Correct
    Wrong
  • 3
    Uncontrolled mitosis
    Correct
    Wrong
  • 4
    Rupturing of cells
    Correct
    Wrong
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Answer : 3. "Uncontrolled mitosis"
Explanation :

Answer: C) Uncontrolled mitosis Explanation:

Q: Nitrogenous bases in DNA and RNA? 1995 0

  • 1
    Adenine
    Correct
    Wrong
  • 2
    Cytosine
    Correct
    Wrong
  • 3
    Guanine
    Correct
    Wrong
  • 4
    All the above
    Correct
    Wrong
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Answer : 4. "All the above"
Explanation :

Answer: D) All the above Explanation: Nitrogenous base: A molecule that contains nitrogen and has the chemical properties of a base.   DNA and RNA ::   The nitrogenous bases in DNA are Adenine (A), Guanine (G), Thymine (T), and Cytosine (C).   Whereas the nitrogenous bases in RNA are the same, with one exception: Adenine (A), Guanine (G), Uracil (U), and Cytosine (C).

Q: A watch which gains uniformly is 2 minutes low at noon on Tuesday and is 4 min 48 sec fast at 2 p.m. on the following Tuesday. When was it correct ? 1995 0

  • 1
    12 p.m. on Wednesday
    Correct
    Wrong
  • 2
    2 p.m. on Thursday
    Correct
    Wrong
  • 3
    3 p.m. on Thursday
    Correct
    Wrong
  • 4
    2 p.m. on Wednesday
    Correct
    Wrong
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Answer : 2. "2 p.m. on Thursday"
Explanation :

Answer: B) 2 p.m. on Thursday Explanation: Time from 12 p.m. on Tuesday to 2 p.m. on the following Tuesday = 7 days 2 hours.= 170 hours.The watch gains = (2 + 4 x 4/5) min= 34/5 min. in 170 hrs.Now, 34/5 min are gained in 170 hrs.Then, 2 min are gained in (170 x 5/34 x 2) hrs.Watch is correct after 2 days 2 hrs after 12 p.m. on Tuesday, i.e., it will be correct at 2 p.m. on Thursday.

Q: On a bank reconciliation, deposits in transit are 1994 0

  • 1
    added to the book balance
    Correct
    Wrong
  • 2
    added to the bank balance
    Correct
    Wrong
  • 3
    deducted from the book balance
    Correct
    Wrong
  • 4
    None of the above
    Correct
    Wrong
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Answer : 2. "added to the bank balance"
Explanation :

Answer: B) added to the bank balance Explanation: A deposit in transit is cash (currency, coins, checks, electronic transfers) that a company has received and is rightfully reported as Cash on its balance sheet, but does not appear on the bank statement until a later date.

Q: Which of these did progressives support? 1994 0

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Answer :
Explanation :

One of the thing that progressive support would be: Direct election of senators.   The progressive wanted this so they could the candidate based on the person and not the party.Direct election of senators will make it easier for them to elect the person that represent their value for the position.

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