IIT JEE Practice Question and Answer
8Q: The rate of change of linear momentum of a body falling freely under gravity is equal to it's ____ ? 1580 05b5cc6e1e4d2b4197774ec10
5b5cc6e1e4d2b4197774ec10- 1Kinetic Energyfalse
- 2Weighttrue
- 3Potential Energyfalse
- 4Impulsefalse
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Answer : 2. "Weight"
Explanation :
Answer: B) Weight Explanation: Rate of change of impulse equals the force . In case of freely falling body the only force is the weight.
Q: What does the central nervous system consists of? 1580 05b5cc64ae4d2b4197774bc4c
5b5cc64ae4d2b4197774bc4c- 1Brainfalse
- 2Spinal cordfalse
- 3Nervesfalse
- 4All the abovetrue
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Answer : 4. "All the above"
Explanation :
Answer: D) All the above Explanation: The central nervous system CNS is responsible for integrating sensory information and responding accordingly. It consists of two main components:: 1. The brain 2. The spinal cord The brain is the center of our thoughts, the interpreter of our external environment, and the origin of control over body movement. The brain can be divided into four main lobes: temporal, parietal, occipital and frontal. The spinal cord serves as a conduit for signals between the brain and the rest of the body.
Q: What is the maximum velocity with which a body of mass 'm' must enter a vertical loop of radius 'R'so that it can complete the loop? 1579 05b5cc6f1e4d2b4197774ef91
5b5cc6f1e4d2b4197774ef91- 10false
- 2gRfalse
- 32gRfalse
- 45gRtrue
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Answer : 4. "5gR"
Explanation :
Answer: D) D Explanation: To complete the vertical loop, the minimum speed required at the lowest point = 5gR.
Q: International Day of Happiness is celebrated throughout the world on ? 1578 05b5cc711e4d2b4197774f3eb
5b5cc711e4d2b4197774f3eb- 121st Marchfalse
- 223rd Marchfalse
- 320th Marchtrue
- 419th Marchfalse
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Answer : 3. "20th March"
Explanation :
Answer: C) 20th March Explanation: The International Day of Happiness (known as Happiness Day) is celebrated throughout the world on the 20th of March. The International Day of Happiness was founded on June 28, 2012, by the United Nations General Assembly when all 193 member states unanimously adopted UN resolution 66/281. It was celebrated for the first time in 2013.
Q: Which country's Parliament became first in the world to run fully on solar energy ? 1577 05b5cc6d5e4d2b4197774e5fc
5b5cc6d5e4d2b4197774e5fc- 1Japanfalse
- 2Pakistantrue
- 3Chinafalse
- 4Myanmarfalse
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Answer : 2. "Pakistan"
Explanation :
Answer: B) Pakistan Explanation:
Q: There are 3 bags, in 1st there are 9 Mangoes, in 2nd 8 apples & in 3rd 6 bananas. There are how many ways you can buy one fruit if all the mangoes are identical, all the apples are identical, & also all the Bananas are identical ? 1577 05b5cc705e4d2b4197774f253
5b5cc705e4d2b4197774f253- 123true
- 2432false
- 322false
- 4431false
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Answer : 1. "23"
Explanation :
Answer: A) 23 Explanation: As in this problem , buying any fruit is different case , as buying apple is independent from buying banana. so ADDITION rule will be used. C19+C18+C16 = 23 will be answer.
Q: 18 tens 20 ones = 1577 05b5cc688e4d2b4197774c34b
5b5cc688e4d2b4197774c34b- 11820false
- 2180false
- 3200true
- 4160false
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Answer : 3. "200"
Explanation :
Answer: C) 200 Explanation: 18 tens 20 ones, the given stateent can be split into 18 tens = 18 x 10 = 180 20 ones = 20 x 1 = 20 Then add both => 180 + 20 = 200 Hence, 18 tens 20 ones = 200.
Q: An implied power is one that 1577 05b5cc655e4d2b4197774bd6e
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Answer :
Explanation :
Implied powers are powers of U.S. government which have not been explicitly granted by the Constitution but that is implied by the necessary and proper clause to be delegated for the purpose of carrying out the enumerated powers.

