IIT JEE Practice Question and Answer

Q: Synonym for the word : Bleak 1922 0

  • 1
    bare
    Correct
    Wrong
  • 2
    lush
    Correct
    Wrong
  • 3
    warm
    Correct
    Wrong
  • 4
    verdant
    Correct
    Wrong
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Answer : 1. "bare"
Explanation :

Answer: A) bare Explanation: Bleak means an area of land lacking vegetation and exposed to the elements like deserts.

Q: The Magna Carta established the rights of 1921 0

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Answer :
Explanation :

The Magna Carta has long been cited as the original source for such documents as the United States Constitution. It was a document that presented ideas that were progressive beyond its time, one that still bears relevance today. The Magna Carta primarily established the rights of 13th-century English citizens. It granted protection from unlawful imprisonment and swift justice, which established the idea that everybody, including the king, was subject to the letter of the law.

Q: "Tigris River" flows through which of the following countries ? 1921 0

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    Iran
    Correct
    Wrong
  • 2
    Italy
    Correct
    Wrong
  • 3
    Iraq
    Correct
    Wrong
  • 4
    Egypt
    Correct
    Wrong
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Answer : 1. "Iran"
Explanation :

Answer: A) Iran Explanation:

Q: Which gas is known as "Fuel of Future" ? 1921 0

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    Methane
    Correct
    Wrong
  • 2
    Oxygen
    Correct
    Wrong
  • 3
    Neon
    Correct
    Wrong
  • 4
    Hydrogen
    Correct
    Wrong
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Answer : 4. "Hydrogen"
Explanation :

Answer: D) Hydrogen Explanation: Because of its being pollution free and  combustion efficient, Hydrogen gas is  called fuel of future. Because of its origin in marshy places, Methane is called as 'Marsh Gas'.

Q: Basophils increase in number when parasitic invasion occurs. 1921 0

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

Answer: B) FALSE Explanation: FALSE. Basophils number will not be increased when parasitic invasion occurs.   Basophils are a type of white blood cell. Although they're produced in the bone marrow, they're found in many tissues throughout your body. They're part of your immune system and play a role in its proper function.   Basophils appear in many specific kinds of inflammatory reactions, particularly those that cause allergic symptoms. If your basophil level is low, it may be due to a severe allergic reaction.   Basophils contain anticoagulant heparin, which prevents blood from clotting too quickly. They also contain the vasodilator histamine, which promotes blood flow to tissues.

Q: 12 boys decided to constribute Rs. 750 each to an Orphange. Suddenly few of them boys dropped out and consequently the rest had to pay Rs. 150 more. Then the number of boys who dropped out? 1921 0

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

Answer: C) 2 Explanation: Total money decided to contribute = 750 x 12 = 9000 Let 'b' boys dropped The rest paid 150/- more => (12 - b) x 900 = 9000 => b = 2 Hence, the number of boys who dropped out is 2.

Q: By investing Rs. 1620 in 8% stock, Michael earns Rs. 135. The stock is then quoted at ? 1921 0

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    Rs. 145
    Correct
    Wrong
  • 2
    Rs. 245.1
    Correct
    Wrong
  • 3
    Rs. 96
    Correct
    Wrong
  • 4
    Rs. 75
    Correct
    Wrong
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Answer : 3. "Rs. 96"
Explanation :

Answer: C) Rs. 96 Explanation: Michel earns Rs. 135 by investing Rs. 1620To earn Rs. 8 how much he have to invest...? = (8 x 1620)/135 = Rs. 96

Q: Transcription occurs in the 1920 0

  • 1
    DNA
    Correct
    Wrong
  • 2
    Cytoplasm
    Correct
    Wrong
  • 3
    Chromosomes
    Correct
    Wrong
  • 4
    Nucleus
    Correct
    Wrong
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Answer : 4. "Nucleus"
Explanation :

Answer: D) Nucleus Explanation: In the cell, transcription occurs in the nucleus in the presence of DNA. Terms transcription and translation in biology are generally related to the DNA and its properties. Human cells replicate. In order to do that, they have to produce the same constituents for the new cell that is to be made. The only way to do that is by producing proteins. The proteins are produced in the process that is called protein synthesis. The first step is in the nucleus where a particular gene is being expressed so it enables all protein factors to come and to replicate that part of a chromosome. This is finished when mRNA, the same single-stranded genetic code of a particular gene, is formed. This is transcription. Right after that, the mRNA enters the cytoplasm through nuclear pores. There, it could be translated into proteins by ribosomes. This process is called translation.   Hence, Transcription occurs in the nucleus, whereas translation occurs in the cytoplasm.

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