IIT JEE Practice Question and Answer

Q: Havana is the capital city of 1582 0

  • 1
    Suriname
    Correct
    Wrong
  • 2
    Belgium
    Correct
    Wrong
  • 3
    Greece
    Correct
    Wrong
  • 4
    Cuba
    Correct
    Wrong
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Answer : 4. "Cuba"
Explanation :

Answer: D) Cuba Explanation: Havana is the capital city of Cuba. It's currency is Cuban Peso.

Q: Shivanasamudra Falls is situated on the bank of ______ river ? 1582 0

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    Indus
    Correct
    Wrong
  • 2
    Kaveri
    Correct
    Wrong
  • 3
    Ganga
    Correct
    Wrong
  • 4
    Brahmaputra
    Correct
    Wrong
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Answer : 2. "Kaveri"
Explanation :

Answer: B) Kaveri Explanation: Shivanasamudra is a famous waterfall situated in Mandya District of Karnataka State.  Gaganachukki and Barachukki Falls are collectively called as Shivanasamudra Falls.

Q: Old name of Mahabharata? 1582 0

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    Jai Samhitha
    Correct
    Wrong
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    Vrahat Katha
    Correct
    Wrong
  • 3
    Rajatarangini
    Correct
    Wrong
  • 4
    Saritsagar Katha
    Correct
    Wrong
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Answer : 1. "Jai Samhitha"
Explanation :

Answer: A) Jai Samhitha Explanation: How the name changed has so many stories. One of them is In the beginning, Mahabharata has 8800 Slokas and after that it reached to 24000 Slokas. And then it was named as The Great Bharata i.e, Mahabharata.

Q: The amount of water vapor in the air is 1581 0

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    Hot air
    Correct
    Wrong
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    Humidity
    Correct
    Wrong
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    Dew
    Correct
    Wrong
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    Foam
    Correct
    Wrong
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Answer : 2. "Humidity"
Explanation :

Answer: B) Humidity Explanation: The amount of water vapor ranges from a trace amount up to 4% of the mass of air. Water vapor exists as an invisible gas in the air.   The amount of water vapor in the air is called absolute humidity. The amount of water vapor in the air as compared with the amount of water that the air could hold is called relative humidity. The maximum amount of water vapor that can be in the air depends on the air temperature.

Q: Which country has successfully launched the world's smallest rocket to carry tiny satellite into orbit? 1581 0

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    India
    Correct
    Wrong
  • 2
    Russia
    Correct
    Wrong
  • 3
    Japan
    Correct
    Wrong
  • 4
    Australia
    Correct
    Wrong
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Answer : 3. "Japan"
Explanation :

Answer: C) Japan Explanation: Japan's - Japan Aerospace Exploration Agency (JAXA) has successfully launched the world's smallest rocket with the ability to put a tiny satellite into orbit. Rocket -  SS-520 which was pnce failed in 2017 lifted off from the Space Center carrying a microsatellite TRICOM-1R, a three-unit CubeSat weighing about 3 kilograms. The CubeSat will now be used to collect images of the Earth's surface via multiple cameras.

Q: Prokaryotic cells lack 1581 0

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    Membrane bound by organelles
    Correct
    Wrong
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    Nucleolus
    Correct
    Wrong
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    Nuclear membrane
    Correct
    Wrong
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    All the above
    Correct
    Wrong
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Answer : 4. "All the above"
Explanation :

Answer: D) All the above Explanation: Prokaryotic cells lack a nucleus and do not have an extensive system of interior membranes. They are encased in a cell wall and many contain external structures such as a capsule, flagellum, or pili. Prokaryotes – have a relatively uniform interior that is not subdivided by internal membranes.

Q: Twelve children take sixteen days to complete a work which can be completed by 8 adults in 12 days. After working for 3 days, sixteen adults left and six adults and four children joined them. How many days will they take to complete the remaining work ? 1580 0

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    3 days
    Correct
    Wrong
  • 2
    2 days
    Correct
    Wrong
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    6 days
    Correct
    Wrong
  • 4
    12 days
    Correct
    Wrong
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Answer : 3. "6 days"
Explanation :

Answer: C) 6 days Explanation: From the given data, 12 children 16 days work,One child’s one day work = 1/192. 8 adults 12 days work,One adult’s one day’s work = 1/96. Work done in 3 days = ((1/96) x 16 x 3) = 1/2 Remaining work = 1 – 1/2 = 1/2 (6 adults+ 4 children)’s 1 day’s work = 6/96 + 4/192 = 1/12 1/12 work is done by them in 1 day. 1/2 work is done by them in 12 x (1/2) = 6 days.

Q: What does the central nervous system consists of? 1580 0

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    Brain
    Correct
    Wrong
  • 2
    Spinal cord
    Correct
    Wrong
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    Nerves
    Correct
    Wrong
  • 4
    All the above
    Correct
    Wrong
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Answer : 4. "All the above"
Explanation :

Answer: D) All the above Explanation: The central nervous system CNS is responsible for integrating sensory information and responding accordingly. It consists of two main components::  1. The brain  2. The spinal cord The brain is the center of our thoughts, the interpreter of our external environment, and the origin of control over body movement. The brain can be divided into four main lobes: temporal, parietal, occipital and frontal.   The spinal cord serves as a conduit for signals between the brain and the rest of the body.

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