IIT JEE Practice Question and Answer

Q: The largest component of National Income in India is ____ ? 2738 0

  • 1
    Service Sector
    Correct
    Wrong
  • 2
    Industrial Sector
    Correct
    Wrong
  • 3
    Agriculture Sector
    Correct
    Wrong
  • 4
    Trade Sector
    Correct
    Wrong
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Answer : 1. "Service Sector"
Explanation :

Answer: A) Service Sector Explanation: The  largest component of National income is service sector.

Q: Which best matches the description with the genetic material? 2732 0

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    Chromosomes are located in the cytoplasm.
    Correct
    Wrong
  • 2
    DNA is located in the nucleus.
    Correct
    Wrong
  • 3
    Nucleotides form a helical structure that is called a gene.
    Correct
    Wrong
  • 4
    Chromosomes create genes.
    Correct
    Wrong
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Answer : 2. "DNA is located in the nucleus."
Explanation :

Answer: B) DNA is located in the nucleus. Explanation: DNA is the genetic material in the cell.    Hence, option B) DNA is located in the nucleus best matches the description with the genetic material.

Q: Which is not a sediment transporting agent? 2730 0

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    Stratification
    Correct
    Wrong
  • 2
    Windstorms
    Correct
    Wrong
  • 3
    Glacial Ice
    Correct
    Wrong
  • 4
    Stream water
    Correct
    Wrong
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Answer : 1. "Stratification"
Explanation :

Answer: A) Stratification Explanation: Stratification as actually the settling down of sediments with different properties to form layers/strata over years. Stratification especially occurs on the bed of water bodies such as oceans.   Stratified sedimentary rocks are used to study the ecological conditions over previous years/eras.     The other choices like Windstorms, Glacial Ice and Stream water are mediums which sediments are transported.

Q: Durand Cup is associated with the game of 2728 0

  • 1
    Badminton
    Correct
    Wrong
  • 2
    Volleyball
    Correct
    Wrong
  • 3
    Football
    Correct
    Wrong
  • 4
    Hockey
    Correct
    Wrong
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Answer : 3. "Football"
Explanation :

Answer: C) Football Explanation: Durand Cup is associated with the game of Football. The Durand Football Tournament or Durand Cup is a football competition in India which was first held in 1888. It is co-hosted by the Durand Football Tournament Society (DFTS) and Osians All the matches are free-of-cost for spectators, and the winner gets ₹ 50 lakh. The Tournament is named after its founder, Sir Mortimer Durand from Simla.

Q: A group consists of 4 men, 6 women and 5 children. In how many ways can 2 men , 3 women and 1 child selected from the given group ? 2727 0

  • 1
    600
    Correct
    Wrong
  • 2
    610
    Correct
    Wrong
  • 3
    609
    Correct
    Wrong
  • 4
    599
    Correct
    Wrong
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Answer : 1. "600"
Explanation :

Answer: A) 600 Explanation: Two men, three women and one child can be selected in ⁴C₂ x ⁶C₃ x ⁵C₁ ways = 600 ways.

Q: The average age of seven persons sitting in a row facing east is 26 years. If the average age of the first three persons is 19 years and the average age of the last three persons is 32 years, then find the age of the person sitting in the middle of the row ? 2727 0

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    32 yrs
    Correct
    Wrong
  • 2
    29 yrs
    Correct
    Wrong
  • 3
    24 yrs
    Correct
    Wrong
  • 4
    27 yrs
    Correct
    Wrong
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Answer : 2. "29 yrs"
Explanation :

Answer: B) 29 yrs Explanation: Total age seven persons = (26 x 7)yearsTotal age of the first three persons and the last three persons are (19 x 3) years and (32 x 3) years respectively.Age of the person sitting in the middle of the row = 26 x 7 - 19 x 3 - 32 x 3 = 182 - 57 - 96 = 29 years.

Q: The shadow zone exists because 2727 0

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Answer :
Explanation :

The shadow zone is the area of the earth from angular distances of 104 to 140 degrees from a given earthquake that does not receive any direct P waves. The shadow zone results from S waves being stopped entirely by the liquid core and P waves being bent (refracted) by the liquid core. There are two types of Shadow zones: one for P waves and one for S waves.   P wave shadows between 104-140 degree, both sides; S wave shadow from 105 of one side to 105 of the other.

Q: What was one outcome of laissez faire economic policies? 2722 0

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    Poverty traps that cannot be escaped through free choice
    Correct
    Wrong
  • 2
    Monopoly power that emerges naturally in the market and allows businesses to exploit consumers
    Correct
    Wrong
  • 3
    Businesses pay workers low
    Correct
    Wrong
  • 4
    All of the above
    Correct
    Wrong
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Answer : 4. "All of the above"
Explanation :

Answer: D) All of the above Explanation: Laissez-faire is simply a way to describe a government's hands-off approach to economic policies. This approach was particularly prevalent in the United States at the turn of the 20th century, which led to numerous issues within American manufacturing.   There are many outcomes of laissez-faire economic policies. Some of the outcomes of laissez-faire economics were: * Businesses pay workers low. * Pollution of air and water. * Poverty traps that cannot be escaped through free choice.  * General glut that results from overproduction or underconsumption * Monopoly power that emerges naturally in the market and allows businesses to exploit consumers.  * Exploitation of the working class that pushes wages down to subsistence and compels laborers to work in harsh and unsafe conditions.  * External economies that generate situations where desirable goods are underproduced on the market, and undesirable goods are overproduced on the market.  * Public goods that are not supplied by the market due to free-rider problems.

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