IIT JEE Practice Question and Answer

Q: The NADPH required for the calvin cycle comes from 1073 0

  • 1
    Reactions initiated in photosystem 1
    Correct
    Wrong
  • 2
    Citric acid cycle
    Correct
    Wrong
  • 3
    Reactions initiated in photosystem 2
    Correct
    Wrong
  • 4
    Glycolysis
    Correct
    Wrong
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Answer : 3. "Reactions initiated in photosystem 2"
Explanation :

Answer: C) Reactions initiated in photosystem 2 Explanation: ATP and NADPH produced by the light reactions are used in the Calvin cycle to reduce carbon dioxide to sugar. The Calvin cycle is similar to the Krebs cycle in that the starting material is regenerated by the end of the cycle.

Q: With an average speed of 40 km/hr, a train reaches its destination in time. If it goes with an average speed of 35 km/hr, it is late by 15 minutes. Find the length of the total journey? 1768 0

  • 1
    70 kms
    Correct
    Wrong
  • 2
    60 kms
    Correct
    Wrong
  • 3
    45 kms
    Correct
    Wrong
  • 4
    30 kms
    Correct
    Wrong
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Answer : 1. "70 kms"
Explanation :

Answer: A) 70 kms Explanation: Let the time taken by train be 't' hrs. Then, 40t = 35t + 1560 40t = 35t + 35/4 t = 7/4 hrs Therefore, Required length of the total journey d = s x t = 40 x 7/4 = 70 kms.

Q: What does 'M' stand for in Roman numerals? 1410 0

  • 1
    1
    Correct
    Wrong
  • 2
    50
    Correct
    Wrong
  • 3
    500
    Correct
    Wrong
  • 4
    1000
    Correct
    Wrong
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Answer : 4. "1000"
Explanation :

Answer: D) 1000 Explanation: Letters of the alphabet used in ancient Rome to represent numbers: I = 1; V = 5; X = 10; L = 50; C = 100; D = 500; M = 1000. The numbers one through ten are written I, II, III, IV, V, VI, VII, VIII, IX, and X.

Q: In 1914 congress formed the federal trade commission to 963 0

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Answer :
Explanation :

When the FTC was created in 1914, its purpose was to monitor all business practices to prevent unfair methods of competition in commerce as part of the battle to "bust the trusts."   Over the years, Congress passed additional laws giving the agency greater authority to police anticompetitive practices.

Q: Plants are photosynthetic autotrophs. What does this mean? 1279 0

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Answer :
Explanation :

Plants are photosynthetic autotrophs, which means that they are able to produce their own food through the process called photosynthesis.   In photosynthesis, plants use light, water, and carbon dioxide to create glucose, which they convert to cellulose and use to make new cells.   Hence, that is why, Plants are called photosynthetic autotrophs.

Q: Square units 13 by 9 of an office area is 1693 0

  • 1
    97
    Correct
    Wrong
  • 2
    117
    Correct
    Wrong
  • 3
    107
    Correct
    Wrong
  • 4
    127
    Correct
    Wrong
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Answer : 2. "117"
Explanation :

Answer: B) 117 Explanation: Square units 13 by 9 of an office means office of length 13 units and breadth 9 units.   Now its area is 13x 9 = 117 square units or units square.

Q: What event resulted in the creation of NASA? 1422 0

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Answer :
Explanation :

It has been said that the creation of NASA was due to the space exploration race between the US and the Soviet Union. One of the drives to the creation of NASA is the launching of Sputnik on October 4, 1957.   Since then, further explorations have been made by the agency.

Q: Effective teamwork and high productivity are good indications of positive 2392 0

  • 1
    productivity goals
    Correct
    Wrong
  • 2
    reinforcement
    Correct
    Wrong
  • 3
    horizontal relationships
    Correct
    Wrong
  • 4
    socializing
    Correct
    Wrong
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Answer : 1. "productivity goals"
Explanation :

Answer: A) productivity goals Explanation: In general, we know that Effective teamwork yields high productivity which is a good indications of positive productivity goals.

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