IIT JEE Practice Question and Answer

Q: Sukhna Lake is in which city? 2001 0

  • 1
    Jaipur
    Correct
    Wrong
  • 2
    Chandigarh
    Correct
    Wrong
  • 3
    Hyderabad
    Correct
    Wrong
  • 4
    Pune
    Correct
    Wrong
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Answer : 2. "Chandigarh"
Explanation :

Answer: B) Chandigarh Explanation: Sukhna Lake is in Chandigarh, India.   It is a reservoir at the foothills of the Himalayas. It covers an area of 3 km². This rainfed lake was created in 1958 by damming the Sukhna Choe, a seasonal stream coming down from the Shivalik Hills.

Q: What is the first step in Photosynthesis? 2001 1

  • 1
    Formation of ATP
    Correct
    Wrong
  • 2
    Joining of 3-carbon atom to form glucose
    Correct
    Wrong
  • 3
    Ionization of water
    Correct
    Wrong
  • 4
    Excitement of an electron of chlorophyll photon of light
    Correct
    Wrong
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Answer : 4. "Excitement of an electron of chlorophyll photon of light"
Explanation :

Answer: D) Excitement of an electron of chlorophyll photon of light Explanation: The first step in Photosynthesis is Excitement of an electron of chlorophyll photon of light.

Q: Which one of the following scripts of ancient India was written from right to left ? 2001 0

  • 1
    Brahmi
    Correct
    Wrong
  • 2
    Kharoshti
    Correct
    Wrong
  • 3
    Nandnagari
    Correct
    Wrong
  • 4
    Sharada
    Correct
    Wrong
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Answer : 2. "Kharoshti"
Explanation :

Answer: B) Kharoshti Explanation: The Kharoshi script is an ancient script used by the ancient Gandhara culture of South Asia primarily in modern-day Afghanistan and Pakistan to write the Gandhari language (a dialect of Prakrit) and the Sanskrit language.

Q: It takes one minute to fill 2/7 th of a vessel. What is the time taken in minutes to fill the whole of the vessel  ? 2000 0

  • 1
    1/7 min
    Correct
    Wrong
  • 2
    7/2 min
    Correct
    Wrong
  • 3
    5/7 min
    Correct
    Wrong
  • 4
    7/5 min
    Correct
    Wrong
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Answer : 2. "7/2 min"
Explanation :

Answer: B) 7/2 min Explanation: Time taken to fill 2/7 = 1Then to fill full 1 = ?? = 1/(2/7) = 7/2 minutes.

Q: How many numbers up to 101 and 300 are divisible by 11  ? 1999 0

  • 1
    18
    Correct
    Wrong
  • 2
    20
    Correct
    Wrong
  • 3
    19
    Correct
    Wrong
  • 4
    17
    Correct
    Wrong
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Answer : 1. "18"
Explanation :

Answer: A) 18 Explanation: (300 – 101)/11 = 199/11 = 18 1/1118 Numbers.

Q: A certain job was assigned to a group of women to do it in 20 days. But 12 women did not turn up for the job and the remaining did the job in 32 days. The original number of women in the group was? 1997 0

  • 1
    36
    Correct
    Wrong
  • 2
    32
    Correct
    Wrong
  • 3
    22
    Correct
    Wrong
  • 4
    28
    Correct
    Wrong
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Answer : 2. "32"
Explanation :

Answer: B) 32 Explanation: Let the total women in the group be 'W' Then according to the given data,  W x 20 = (W-12) x 32  => W = 32  Therefore, the total number of women in the group = 32

Q: what is the gram formula mass of NH43PO4? 1996 0

  • 1
    139.54
    Correct
    Wrong
  • 2
    140.70
    Correct
    Wrong
  • 3
    149.08
    Correct
    Wrong
  • 4
    153.24
    Correct
    Wrong
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Answer : 3. "149.08"
Explanation :

Answer: C) 149.08 Explanation: The gram formula mass is nothing but molar mass.   Composition :   Symbol      Element       Atomic weight       Atoms          P         Phosphorus       30.973762               1       = 30.973         O         Oxygen             15.9994                  4       =  63.998         N         Nitrogen            14.0067                  3       =  42.020         H         Hydrogen          1.00794                  12      =  12.096     Total   =  30.973+63.998+42.020+12.096 = 149.087

Q: The ratio of investments of two partners A and B is 7:5 and the ratio of their profits is 7:10. If A invested the money for 5 months, find for how much time did B invest the money ? 1996 0

  • 1
    11 months
    Correct
    Wrong
  • 2
    9 months
    Correct
    Wrong
  • 3
    7 months
    Correct
    Wrong
  • 4
    10 months
    Correct
    Wrong
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Answer : 4. "10 months"
Explanation :

Answer: D) 10 months Explanation: 7x5: 5xk = 7:10k = 10 months

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