IIT JEE Practice Question and Answer

Q: Where are Alluvial Soils found in India? 1603 0

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Answer :
Explanation :

1. In India Alluvial Soils are most likely found in Indo-Gangetic Plains that stretches across almost East and North India.    2. Indo-Gangetic Plains has got this name after the two rivers The Indus and The Ganges Drain th plain.   3. These soil cover more than the 35% of the total land in India.   4. These Soils are suitable for Wheat, Vegetables, Cotton, Bajra, Oil seeds,...   5. These soils tend to be sandier and has quick draining properties than many other soils in India.

Q: A town has a population of 4000 requires 140 liters of water per head. It has a tank measuring 18m x 12m x 8m. The water of this tank will suffice for ____ days? 1603 0

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

Answer: A) 3 Explanation: Water required = 4000 x 140 = 560000 lit = 560 cu.m (1 cu.m = 1000 lit) Volume of tank = 18 x 12 x 8 = 1728 cu.m Water of this tank will suffice for = 1728/560 = 3 days.

Q: I go around and in the house but never touches the house. What am I? 1602 0

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Answer :
Explanation :

Te Sun. From the time rising it goes around the house upto sunset, but never touches the house.

Q: The heat from the sun reaches earth through Convection. 1602 0

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

Answer: B) FALSE Explanation: The given statement, The heat from the sun reaches earth through Convection is FALSE.   Heat from the sun actually reaches the earth through Radiation. The process occurs through electromagnetic radiation, specifically, in which molecules are warmed when the heat reaches them, and these molecules then warm other molecules touching them, which continues until we feel the sun's heat.

Q: Pollen grains in plants are produced in 1601 0

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    Flower
    Correct
    Wrong
  • 2
    Stem
    Correct
    Wrong
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    Roots
    Correct
    Wrong
  • 4
    Leaves
    Correct
    Wrong
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Answer : 1. "Flower"
Explanation :

Answer: A) Flower Explanation:

Q: Internet was started in India on ? 1601 0

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    8 August,1994
    Correct
    Wrong
  • 2
    15 August,1995
    Correct
    Wrong
  • 3
    9 August,1995
    Correct
    Wrong
  • 4
    7 August,1996
    Correct
    Wrong
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Answer : 2. "15 August,1995"
Explanation :

Answer: B) 15 August,1995 Explanation:

Q: Mahesh bought 100 kg of rice for Rs. 1040 and sold it at a loss of as much money as he received for 30 kg rice. At what price did he sell the rice? 1601 0

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    Rs. 7.46/kg
    Correct
    Wrong
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    Rs. 8/kg
    Correct
    Wrong
  • 3
    Rs. 8.74/kg
    Correct
    Wrong
  • 4
    Rs. 8.56/kg
    Correct
    Wrong
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Answer : 2. "Rs. 8/kg"
Explanation :

Answer: B) Rs. 8/kg Explanation: Let the selling price of the rice = Rs.P/kg Now, according to the question, 1040 - 100p = 30p => p = 8/kg   Hence, the selling price of the rice = Rs. 8/kg

Q: Arun’s weight is 140% of Akhil’s weight. Nani’s weight is 90% of Shreyon’s weight. Shreyon’s weight is twice as much as Akhil’s. What percentage of Arun’s weight is Nani’s weight? 1601 0

  • 1
    76%
    Correct
    Wrong
  • 2
    77%
    Correct
    Wrong
  • 3
    78%
    Correct
    Wrong
  • 4
    79%
    Correct
    Wrong
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Answer : 3. "78%"
Explanation :

Answer: C) 78% Explanation: Let Akhil's weight = p kg => Shreyon's weight = 2p kg Nani's weight = 0.9 x 2p = 1.8p kg => Arun's weight = 1.4p kg Required percentage = 1.4p1.8p x 100 = 77.8% ~= 78%

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