IIT JEE Practice Question and Answer

Q: Simplify the fraction? 5 (2/7) - 3 (1/14) - 2 (1/14) - 1 (1/7) = ? + 3 (1/17) 1682 0

  • 1
    -4 (1/17)
    Correct
    Wrong
  • 2
    5 (2/17)
    Correct
    Wrong
  • 3
    -2 (1/17)
    Correct
    Wrong
  • 4
    3 (3/17)
    Correct
    Wrong
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Answer : 1. "-4 (1/17)"
Explanation :

Answer: A) -4 (1/17) Explanation: Given fraction is 5 (2/7) - 3 (1/14) - 2 (1/14) - 1 (1/7) = ? + 3 (1/17)  It can be written as  (5 - 3 - 2 - 1) + (2/7 - 1/14 - 1/14 - 1/7) = ? +  3 (1/17)  -1 + 0 - 3 (1/17) = ? => ? = -4 (1/17)

Q: The more you take the more you leave behind. What is it? 1682 0

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Answer :
Explanation :

Footsteps.  Yes, as you walk forward, you will leave the footstep behind you.

Q: What is Latus Rectum of Parabola? 1681 0

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    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: Which of the following is the longest river in India? 1681 0

  • 1
    Godavari
    Correct
    Wrong
  • 2
    Ganga
    Correct
    Wrong
  • 3
    Yamuna
    Correct
    Wrong
  • 4
    Brahmaputra
    Correct
    Wrong
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Answer : 2. "Ganga"
Explanation :

Answer: B) Ganga Explanation: India is a land of rivers. Rivers are generally treated as mothers and almost every major river of India has a legend regarding its origin.   The Ganges or Ganga is the longest river of India, if we consider the total distance covered by a river within India. Two major rivers of the Indian subcontinent – Brahmaputra and Indus – are though longer than the Ganges, but the distances these two rivers cover within India are much shorter than that of the Ganges. The Ganges is the most sacred river to the Hindus. The Ganges originates from Gangotri Glacier (Uttarakhand). The total length that the Ganges covers during its journey is 2,525 kilometers (1569 miles) before it discharges in the Bay of Bengal.   The Godavari, also known as 'Dakshin Ganga' – the South Ganges, is the second longest river of India. It originates from Triambakeshwar, Nasik (Maharashtra), and travels through Chhattisgarh, Telangana and Andhra Pradesh, before discharging into Bay of Bengal.

Q: How many digits will be there to the right of the decimal point in the product of 85.44 and .08455 ? 1681 0

  • 1
    7
    Correct
    Wrong
  • 2
    5
    Correct
    Wrong
  • 3
    4
    Correct
    Wrong
  • 4
    6
    Correct
    Wrong
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Answer : 4. "6"
Explanation :

Answer: D) 6 Explanation: Sum of decimal places = 7. Since the last digit to the extreme right will be zero (since 4 x 5 = 20), so there will be 6 significant digits to the right of the decimal point.

Q: Which one of the following is not a prime number? 1680 0

  • 1
    91
    Correct
    Wrong
  • 2
    71
    Correct
    Wrong
  • 3
    41
    Correct
    Wrong
  • 4
    31
    Correct
    Wrong
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Answer : 1. "91"
Explanation :

Answer: A) 91 Explanation: Prime Numbers :: Numbers which are divisible by only 1 and itself are Prime Numbers.   It's answer will be 91. Because 91 can be divisible by 7,13,91,1. It is quite clear that prime number should be divisible only by itself and by 1.

Q: Wild animals are not considered a natural resource. 1680 0

  • 1
    TRUE
    Correct
    Wrong
  • 2
    FALSE
    Correct
    Wrong
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Answer : 2. "FALSE"
Explanation :

Answer: B) FALSE Explanation: The given statement is False. Wild animals are considered as a natural resource. Natural resources are resources taken from nature to satisfy our needs. These natural resources are: 1) Air 2) Water 3) Soil 4) Plants 5) Animals 6) Minerals 7) Forests 8) Natural Gas 9) Coal 10) Petroleum.

Q: Which of the following is not correct concerning nerves? 1679 0

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    Axons make up a majority of the matter in a nerve.
    Correct
    Wrong
  • 2
    Nerves are collection of axons of either sensory or motor neurons but not both.
    Correct
    Wrong
  • 3
    Nerves are covered by an outer sheath called the epineurium
    Correct
    Wrong
  • 4
    Nerves consist of parallel bundles of myelinated and nonmyelinated axons.
    Correct
    Wrong
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Answer : 1. "Axons make up a majority of the matter in a nerve."
Explanation :

Answer: A) Axons make up a majority of the matter in a nerve. Explanation: Axons make up a majority of the matter in a nerve is the one statement regarding nerves is incorrect.

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