IIT JEE Practice Question and Answer

Q: Light : Blind 2342 0

  • 1
    Tongue : Sound
    Correct
    Wrong
  • 2
    Voice : Vibration
    Correct
    Wrong
  • 3
    Language : Deaf
    Correct
    Wrong
  • 4
    Speech : Dumb
    Correct
    Wrong
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Answer : 4. "Speech : Dumb"
Explanation :

Answer: D) Speech : Dumb Explanation: Here the two pair of words related in such a way that, a blind can't see the light. Similarly, a dumb cannot speech.   Hence, Light : Blind :: Speech : Dumb.

Q: A shopkeeper sells one-third of his goods at a profit of 10%, another one-third at a profit of 20%, and the rest at a loss of 6%.What is his overall profit percentage ? 2341 0

  • 1
    6%
    Correct
    Wrong
  • 2
    8%
    Correct
    Wrong
  • 3
    10%
    Correct
    Wrong
  • 4
    12%
    Correct
    Wrong
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Answer : 2. "8%"
Explanation :

Answer: B) 8% Explanation: Let the shopkeeper buy 300g for Rs.300. Now he sells 100g for Rs.110, another 100g for Rs120, and the rest 100g for Rs94.    Therefore, the total amount he receives = Rs.110 + Rs.120 + Rs.94 = 324.    Therefore, the shopkeeper spends Rs.300 and gets back Rs.324.   Therefore, his profit percentage = 24300x100 % = 8%

Q: Which one of the following launched world's longest scheduled flight ? 2341 0

  • 1
    Qatar Airways
    Correct
    Wrong
  • 2
    British Airways
    Correct
    Wrong
  • 3
    Jet Blue
    Correct
    Wrong
  • 4
    Air India
    Correct
    Wrong
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Answer : 1. "Qatar Airways"
Explanation :

Answer: A) Qatar Airways Explanation: The Qatar Airways has launched the World’s longest scheduled commercial service to ply between Doha to Auckland. The inaugural service of Flight QR920 took off on February 5, 2017 from Doha and will take 16 hours and 20 minutes to travel 14,535 kilometers to reach Auckland in New Zealand.This makes Qatar Airways to launch the World’s fastest and longest passenger service in terms of flying time. Prior to this, emirates launched the world’s longest non-stop scheduled commercial flight with a service from Dubai to Auckland, spanning 14,200 kilometres.

Q: What has four wheels and flies? 2341 0

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Answer :
Explanation :

Garbage truck. It’s true, a garbage truck has 4 wheels and lots of flies because flies like garbage. Here flies means insects like houseflies, mosquitoes, ... It doesn't mean that it flies in the air.

Q: Which of the following causes tornadoes? 2340 0

  • 1
    condensation
    Correct
    Wrong
  • 2
    dry climates
    Correct
    Wrong
  • 3
    wind shear
    Correct
    Wrong
  • 4
    stationary fronts
    Correct
    Wrong
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Answer : 2. "dry climates"
Explanation :

Answer: B) dry climates Explanation: Conditions suitable for the formation of a tornado develop when varying temperatures and humidity come together and form thunderclouds. This refers to the presence of warm and moist condition in the lower atmosphere and cold and dry conditions in the upper atmosphere. The place where these varying masses of air meet is known as the dry-line. Such conditions, which are suitable for the formation of a tornado, are most often observed just before a low pressure system develops.   Once the ideal conditions occur, the warm air tries to rise in the atmosphere, while the cold air blocks it. This makes the air in between rotate horizontally. In the meanwhile, the land is heated by the Sun, and hence, the air near the ground becomes warm and starts rising. Continuous fueling by the heat energy from the Sun ensures that the warm air has an upper hand over cold air. As a result of this, the cold air at the top starts sinking and the warm air below starts rising in a spinning motion. As the amount of warm air increases, the formation gains height and becomes intense. The intensity of these devastating tornadoes is such that they can clear off anything that comes in their path.

Q: Which of these is unique to flowering plants? 2340 0

  • 1
    double fertilization
    Correct
    Wrong
  • 2
    an embryo surrounded by nutritive tissue
    Correct
    Wrong
  • 3
    haploid gametophytes
    Correct
    Wrong
  • 4
    pollen production
    Correct
    Wrong
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Answer : 1. "double fertilization"
Explanation :

Answer: A) double fertilization Explanation: In flowering plants one sperm nucleus fertilizes the egg and the other sperm nucleus fuses with two other nuclei found within the ovule, thus forming triploid endosperm.   Hence, double fertilization is unique to flowering plants.

Q: What is the feminine of bull  ? 2340 0

  • 1
    Mule
    Correct
    Wrong
  • 2
    Ostrich
    Correct
    Wrong
  • 3
    Tigress
    Correct
    Wrong
  • 4
    Heifer
    Correct
    Wrong
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Answer : 4. "Heifer"
Explanation :

Answer: D) Heifer Explanation:

Q: Which atomic power station in India is built completely indigenously? 2339 0

  • 1
    Rawat Bhata
    Correct
    Wrong
  • 2
    Kalpakkam
    Correct
    Wrong
  • 3
    Tarapore
    Correct
    Wrong
  • 4
    Narora
    Correct
    Wrong
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Answer : 2. "Kalpakkam"
Explanation :

Answer: B) Kalpakkam Explanation: Madras Atomic Power Station (MAPS) located at Kalpakkam about 80 kilometers (50 mi) south of Chennai, India, is a comprehensive nuclear power production, fuel reprocessing, and waste treatment facility that includes plutonium fuel fabrication for fast breeder reactors (FBRs) is the only atomic power station in India that was built completely indigenously.

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