IIT JEE Practice Question and Answer

Q: The rate of change of linear momentum of a body falling freely under gravity is equal to it's ____ ? 1580 0

  • 1
    Kinetic Energy
    Correct
    Wrong
  • 2
    Weight
    Correct
    Wrong
  • 3
    Potential Energy
    Correct
    Wrong
  • 4
    Impulse
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

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 0

  • 1
    Brain
    Correct
    Wrong
  • 2
    Spinal cord
    Correct
    Wrong
  • 3
    Nerves
    Correct
    Wrong
  • 4
    All the above
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

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 0

  • 1
    0
    Correct
    Wrong
  • 2
    gR
    Correct
    Wrong
  • 3
    2gR
    Correct
    Wrong
  • 4
    5gR
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

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 0

  • 1
    21st March
    Correct
    Wrong
  • 2
    23rd March
    Correct
    Wrong
  • 3
    20th March
    Correct
    Wrong
  • 4
    19th March
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

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 0

  • 1
    Japan
    Correct
    Wrong
  • 2
    Pakistan
    Correct
    Wrong
  • 3
    China
    Correct
    Wrong
  • 4
    Myanmar
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

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 0

  • 1
    23
    Correct
    Wrong
  • 2
    432
    Correct
    Wrong
  • 3
    22
    Correct
    Wrong
  • 4
    431
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

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 0

  • 1
    1820
    Correct
    Wrong
  • 2
    180
    Correct
    Wrong
  • 3
    200
    Correct
    Wrong
  • 4
    160
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

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 0

  • Show AnswerHide Answer
  • Workspace

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.

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully