IIT JEE Practice Question and Answer

Q: A jogger running at 9 km/hr along side a railway track is 260 m ahead of the engine of a 140 m long train running at 45 km/hr in the same direction. In how much time will the train pass the jogger ? 1898 0

  • 1
    25 sec
    Correct
    Wrong
  • 2
    40 sec
    Correct
    Wrong
  • 3
    38 sec
    Correct
    Wrong
  • 4
    32 sec
    Correct
    Wrong
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Answer : 2. "40 sec"
Explanation :

Answer: B) 40 sec Explanation: Speed of train relative to jogger = 45 - 9 = 36 km/hr.= 36 x 5/18 = 10 m/sec. Distance to be covered = 260 + 140 = 400 m. Time taken = 400/10 = 40 sec.

Q: Which choice best describes the polarity of BrF5? 1898 0

  • 1
    nonpolar bonds / nonpolar molecule
    Correct
    Wrong
  • 2
    nonpolar bonds / polar molecule
    Correct
    Wrong
  • 3
    polar bonds / polar molecule
    Correct
    Wrong
  • 4
    polar bonds / nonpolar molecule
    Correct
    Wrong
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Answer : 3. "polar bonds / polar molecule"
Explanation :

Answer: C) polar bonds / polar molecule Explanation:

Q: What is Latus Rectum of Parabola? 1897 0

  • 1
    line segment
    Correct
    Wrong
  • 2
    vertex
    Correct
    Wrong
  • 3
    focus
    Correct
    Wrong
  • 4
    major axis
    Correct
    Wrong
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Answer : 1. "line segment"
Explanation :

Answer: A) line segment Explanation: As parabola is a locus of a point, which moves so that its distance from focus and directrix is always equal.   The latus rectum of a conic section is the chord (line segment) that passes through the focus, is perpendicular to the major axis and has both endpoints on the curve. The length of the latus rectum is determined differently for each conic.                                          The length of a parabola's latus rectum is 4p, where p is the distance from the focus to the vertex.

Q: GDPR means 1897 0

  • 1
    General Data Protection Regulation
    Correct
    Wrong
  • 2
    Generic Data Per Random
    Correct
    Wrong
  • 3
    Generic Data Protection Regulation
    Correct
    Wrong
  • 4
    Gross Data Protection Regulation
    Correct
    Wrong
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Answer : 1. "General Data Protection Regulation"
Explanation :

Answer: A) General Data Protection Regulation Explanation: GDPR stands for the General Data Protection Regulation. The GDPR is a piece of EU legislation passed by the European Parliament in 2016.   It aims to make it simpler for people to control how companies use their personal details. Companies will not be allowed to collect and use personal information without the person's consent. Data includes things like a person's name, email address and phone number, and also internet browsing habits collected by website cookies.

Q: What is the functional unit of a skeletal muscle called? 1897 0

  • 1
    Myofibril
    Correct
    Wrong
  • 2
    Sarcomere
    Correct
    Wrong
  • 3
    Fiber
    Correct
    Wrong
  • 4
    Fasciculus
    Correct
    Wrong
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Answer : 2. "Sarcomere"
Explanation :

Answer: B) Sarcomere Explanation: The myofibrils are composed of actin and myosin filaments, repeated in units called sarcomeres, which are the basic functional units of the skeletal muscle.

Q: A hybrid of a donkey and a horse 1897 0

  • 1
    Panthera and Mule
    Correct
    Wrong
  • 2
    Mules and Hinnys
    Correct
    Wrong
  • 3
    Liger and Hinnys
    Correct
    Wrong
  • 4
    Wholphin and Mule
    Correct
    Wrong
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Answer : 2. "Mules and Hinnys"
Explanation :

Answer: B) Mules and Hinnys Explanation: Donkeys and horses can be breed to make mules and hinnys. A hinny is a domestic equine hybrid that is the offspring of a male horse, a stallion, and a female donkey, a jenny. It is the reciprocal cross to the more common mule, which is the product of a male donkey, a jack, and a female horse, a mare.

Q: Crack the Logical #MathPuzzle? 1897 0

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Answer :
Explanation :

From given data, Rs. 1 = 40 strawberries => Rs. 2 = 80 strawberries Rs. 5  = 1 apple => Rs. 95 = 19 apple. Rs. 3 = 1 mango => Rs. 3 = 1, mango Now, Total So 100 Rs = 100 Fruits.

Q: Number Challenge 1897 0

  • 1
    9
    Correct
    Wrong
  • 2
    11
    Correct
    Wrong
  • 3
    13
    Correct
    Wrong
  • 4
    15
    Correct
    Wrong
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Answer : 2. "11"
Explanation :

Answer: B) 11 Explanation: Half the Product of Number in the upper & lower box gives the number in the middle box. i.e. 18 x 4/2 = 36 15 x 6/2 = 45 In the same way  8 x N/2 = 44 => N = 11.

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