IIT JEE Practice Question and Answer

Q: Alone I am 24th, with a friend I am 20. Another friend and I am unclean. What am I? 1711 0

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Answer :
Explanation :

The answer is 'X'. 1. It is the 24th letter in the alphabetical order. 2. XX (20 in Roman) 3. XXX is used to refer dirty.

Q: The new agricultural strategy in india was introduced in 1710 0

  • 1
    1956
    Correct
    Wrong
  • 2
    1966
    Correct
    Wrong
  • 3
    1976
    Correct
    Wrong
  • 4
    1986
    Correct
    Wrong
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Answer : 2. "1966"
Explanation :

Answer: B) 1966 Explanation: The Green Revolution in India refers to a period of time when agriculture in India changed to an industrial system due to the adoption of modern methods and technology such as high yielding variety (HYV) seeds, tractors, pump sets, etc. Green revolution was started by Dr.M.S. Swaminathan.   The new agricultural strategy was adopted in India during the Third Plan, i.e., during 1960s. As suggested by the team of experts of the Ford Foundation in its report "India’s Crisis of Food and Steps to Meet it" in 1959 the Government decided to shift the strategy followed in agricultural sector of the country.   During the period of mid-1960s, Prof. Norman Borlaug of Mexico developed new high yielding varieties of wheat and accordingly various countries started to apply this new variety with much promise. Similarly, in the kharif season in 1966, India adopted High Yielding Varieties Programme (HYVP) for the first time.

Q: The cost price of 40 Magazines is the same as the selling price of 'P' articles. If the profit is 25%, then the value of 'P' is: 1710 0

  • 1
    32
    Correct
    Wrong
  • 2
    40
    Correct
    Wrong
  • 3
    16
    Correct
    Wrong
  • 4
    30
    Correct
    Wrong
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Answer : 1. "32"
Explanation :

Answer: A) 32 Explanation: Let C.P. of each Magazine be Rs. 1 C.P. of P articles = Rs. P.  S.P. of P articles = Rs. 40.   Profit = Rs. (40 - P)   Now, Gain% = ProfitC.P×100 = 40-PP×100    Here 40-PP×100= 25 -->P = 32.

Q: Which is the oldest tennis tournament in the world and also prestigious? 1710 0

  • 1
    Wimbledon
    Correct
    Wrong
  • 2
    US Open
    Correct
    Wrong
  • 3
    French Open
    Correct
    Wrong
  • 4
    Australian Open
    Correct
    Wrong
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Answer : 1. "Wimbledon"
Explanation :

Answer: A) Wimbledon Explanation: Wimbledon Tournament in the city London, is the prestigious and the oldest tournament in the world.

Q: Which of the following is Not a form of Energy? 1710 0

  • 1
    Heat
    Correct
    Wrong
  • 2
    Sound
    Correct
    Wrong
  • 3
    Motion
    Correct
    Wrong
  • 4
    Pressure
    Correct
    Wrong
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Answer : 4. "Pressure"
Explanation :

Answer: D) Pressure Explanation: Pressure is Not a form of Energy.   Energy : It is defined as the ability to do work. Energy comes in two basic forms. They are : 1. Potential Energy 2. Kinetic Energy   Potential Energy is any type of stored energy. It can be chemical, nuclear, gravitational, or mechanical. Kinetic Energy is found in movement. An airplane flying or a meteor plummeting each have kinetic energy. Even the tiniest things have kinetic energy, like atoms vibrating when they are hot or when they transmit sound waves. Electricity is the kinetic energy of flowing electrons between atoms.

Q: Which one phosphorylates ADP to make ATP? 1710 0

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Answer :
Explanation :

ATP synthase Phosphorylates ADP to make ATP.

Q: P can do a piece of work in 5 less days than Q. If both of them can do the same work in 1119days, in how many days will Q alone do the same work  ? 1710 0

  • 1
    24 days
    Correct
    Wrong
  • 2
    25 days
    Correct
    Wrong
  • 3
    20 days
    Correct
    Wrong
  • 4
    19 days
    Correct
    Wrong
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Answer : 2. "25 days"
Explanation :

Answer: B) 25 days Explanation: Let Q complete that work in 'L' days   => 1L + 1L-5 = 9100   => 9L2-245L+500=0   L = 25 days.

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Answer : 4. "Rs.5000"
Explanation :

Answer: D) Rs.5000 Explanation: Let a, b and c be the amounts invested in schemes X, Y and Z respectively. Then, As we know: Simple interest (S.I.) = PTR/100 (a × 10 × 1/100) + (b × 12 × 1/100) + (c × 15 × 1/100) = 3200 = 10a + 12b + 15c = 320000 .........(1) Now, c = 240% of b = 12b/5 .........(2) And, c = 150% of a = 3a/2 => a = 2/3 c = (2 × 12)b/(3 × 5) = 8b/5 .......(3) From (1), (2) and (3), we have 16b + 12b + 36b = 320000 => 64b = 320000 => b = 5000 ∴ Sum invested in Scheme Y = Rs.5000.

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