IIT JEE Practice Question and Answer

Q: What element is found in all organic compounds? 1758 0

  • 1
    Hydrogen
    Correct
    Wrong
  • 2
    Calcium
    Correct
    Wrong
  • 3
    Nitrogen
    Correct
    Wrong
  • 4
    Carbon
    Correct
    Wrong
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Answer : 4. "Carbon"
Explanation :

Answer: D) Carbon Explanation: Carbon is found in all organic compounds.

Q: What is the value of KL ? Statement A: K2= 4.Statement B: L = 0. 1758 0

  • 1
    Only A is sufficient
    Correct
    Wrong
  • 2
    Only B is sufficient
    Correct
    Wrong
  • 3
    Both (A) and (B) are sufficient
    Correct
    Wrong
  • 4
    A) and (B) are sufficient D)
    Correct
    Wrong
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Answer : 2. "Only B is sufficient"
Explanation :

Answer: B) Only B is sufficient Explanation: From statement B,  As the value of L = 0, the value of KL = 0. Hence only statement B is sufficient.

Q: Which of the following is not a Fundamental Right? 1758 0

  • 1
    Right To Freedom Of Speech And Expression
    Correct
    Wrong
  • 2
    Right To Employment
    Correct
    Wrong
  • 3
    Right To Equality
    Correct
    Wrong
  • 4
    Right To Education
    Correct
    Wrong
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Answer : 2. "Right To Employment"
Explanation :

Answer: B) Right To Employment Explanation: Fundamental Rights are the basic rights of the common people and inalienable rights of the people who enjoy it under the charter of rights of Constitution of India.   The six fundamental rights recognised by the Indian constitution are:: the right to equality, right to freedom, right against exploitation, right to freedom of religion, cultural and educational rights, right to constitutional remedies.

Q: An increase in the quantity demanded means that 1758 0

  • 1
    The demand curve shifted to right
    Correct
    Wrong
  • 2
    Price of the product has declined
    Correct
    Wrong
  • 3
    Increase in consumer income
    Correct
    Wrong
  • 4
    All the above
    Correct
    Wrong
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Answer : 4. "All the above"
Explanation :

Answer: D) All the above Explanation:

Q: How many seconds will a 600 m long train take to cross a man walking with a speed of 7 km/hr in the direction of the moving train if the speed of the train is 67 km/hr ? 1758 0

  • 1
    29 sec
    Correct
    Wrong
  • 2
    58 sec
    Correct
    Wrong
  • 3
    36 sec
    Correct
    Wrong
  • 4
    44 sec
    Correct
    Wrong
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Answer : 3. "36 sec"
Explanation :

Answer: C) 36 sec Explanation: Speed of train relative to man = 67 - 7 = 60 km/hr.= 60 x 5/18 = 50/3 m/sec. Time taken to pass the man = 600 x 3/50 = 36 sec.

Q: c with a line over it symbol means 1757 0

  • 1
    with
    Correct
    Wrong
  • 2
    without
    Correct
    Wrong
  • 3
    and
    Correct
    Wrong
  • 4
    or
    Correct
    Wrong
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Answer : 1. "with"
Explanation :

Answer: A) with Explanation: The letter “c” with a line over it is a medical abbreviation often used by doctors, nurses, and other medical professionals. The symbol looks like this: c̄. The c is almost always lower-case. This symbol actually has a very simple meaning. A c with a line over it just means “with”. This abbreviation is often used on patient charts and prescriptions, as well as information or notes written by medical professionals.

Q: 'K' cycled from A to B at 10 kmph and returned at the rate of 9 kmph. 'L' cycled both ways at 12 kmph. In the whole journey 'L' took 10 minutes less than 'K'. Find the distance between A and B ? 1757 0

  • 1
    32.1 km
    Correct
    Wrong
  • 2
    15.23 km
    Correct
    Wrong
  • 3
    3.75 km
    Correct
    Wrong
  • 4
    32.1 m
    Correct
    Wrong
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Answer : 3. "3.75 km"
Explanation :

Answer: C) 3.75 km Explanation: Let 'd' be the distance between A and BK -time = d/10 + d/9 = 19d/90 hoursL -time = 2d/12 = d/6 hoursWe know that, 10 min = 1/6 hoursThus, time difference between K and L is given as 10 minutes. => 19d/90 - d/6 = 1/6=> (19d-15d)/90 = 1/6=> 4d/90 = 1/6Thus,d= 15/4 km = 3.75 km. hence the distance between A and B is 3.75 km.

Q: 5/8 as a Decimal Equals To 1757 0

  • 1
    0.625
    Correct
    Wrong
  • 2
    0.541
    Correct
    Wrong
  • 3
    0.258
    Correct
    Wrong
  • 4
    0.147
    Correct
    Wrong
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Answer : 1. "0.625"
Explanation :

Answer: A) 0.625 Explanation: 5/8 is Nothing but to divide 5 into 8 parts.     As 5 is smaller than 8, the quotient starts with a decimal point to make 5 as 50 to be divisible by 8. (0.)     Now 50 goes for 6 times in 8 leaving a remainder 2. (0.6)      Again 2 is smaller than 8, As it already has decimal point in the quotient, now 2 becomes 20.      Now 20 goes for 2 times in 8 leaving a remainder 4. (0.62)      Again 4 is smaller than 8, As it already has decimal point in the quotient, now 4 becomes 40.     Now 40 goes for 5 times in 8 leaving a remainder 0. (0.625)     Therefore, the decimal value of 58 is 0.625.   Now find a decimal value of 1117 and Discuss your at Discuss.

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