IIT JEE Practice Question and Answer

Q: A pulse can be detected most easily in 1986 0

  • 1
    a vein
    Correct
    Wrong
  • 2
    a lacteal
    Correct
    Wrong
  • 3
    an artery
    Correct
    Wrong
  • 4
    a capillary
    Correct
    Wrong
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Answer : 3. "an artery"
Explanation :

Answer: C) an artery Explanation: A pulse can be detected most easily in Arteries as they are under much greater pressure than veins because they are carrying blood away from the heart which is the pumping machine to force blood to move to all of the body.   Every time the hear contracts, it can be felt in an artery where a surge of blood has just been forced.   A capillary is too small to feel a pulse and a lacteal is part of the lymphatic system found in the small intestine.

Q: What is the distance around a circle called 1570 0

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Answer :
Explanation :

The distance around a circle is called as Circumference. And that in the case of square or rectangle it is called as Perimeter.

Q: Which phase change is an example of an exothermic process? 1421 0

  • 1
    Liquid to Solid
    Correct
    Wrong
  • 2
    Gas to Solid
    Correct
    Wrong
  • 3
    Gas to Liquid
    Correct
    Wrong
  • 4
    All the above
    Correct
    Wrong
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Answer : 4. "All the above"
Explanation :

Answer: D) All the above Explanation: Processes that require or give off heat will be limited to changes of state, known as phase changes, and changes in chemical constitution, or chemical reactions. Changes of state involve a solid melting, a liquid freezing, a liquid boiling or a gas condensing.   An exothermic process is one that gives off heat, which is transferred to the surroundings. An endothermic process is a reaction which heat has to be supplied to the system from the surroundings.   Here in all the given options, heat is taken away from them to change there phase.  Liquid to Solid --- Freezing Gas to Liquid --- Condensation Gas to Solid --- Deposition  are all examples of exothermic processes.

Q: Points that lie on the same line are called 2332 0

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    Congruent
    Correct
    Wrong
  • 2
    Coplanar points
    Correct
    Wrong
  • 3
    Collinear points
    Correct
    Wrong
  • 4
    None
    Correct
    Wrong
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Answer : 3. "Collinear points"
Explanation :

Answer: C) Collinear points Explanation: Points that lie on the same line are called Collinear points. And that points lie on the same plane are called Coplanar points.

Q: Who is the first woman lawyer to be appointed as Supreme court judge? 1477 0

  • 1
    Indu Malhotra
    Correct
    Wrong
  • 2
    Fathima Beevi
    Correct
    Wrong
  • 3
    R. Banumathi
    Correct
    Wrong
  • 4
    Ruma Pal
    Correct
    Wrong
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Answer : 1. "Indu Malhotra"
Explanation :

Answer: A) Indu Malhotra Explanation: Supreme Court collegium has selected senior advocate Indu Malhotra as the first woman lawyer to be directly appointed as a judge of the apex court. Along with Malhotra, Uttarakhand High Court Chief Justice KM Joseph has also been promoted as a Supreme Court justice. Malhotra holds the distinction of being only the second woman in Supreme Court’s history to be designated as a senior advocate in 2007. In all, Malhotra is going to be the seventh woman judge since independence to make it to the Supreme Court. At present, Justice R Banumathi is the lone woman judge in the apex court.

Q: Basophils increase in number when parasitic invasion occurs. 1753 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: Why are yeast cells frequently used as hosts for cloning? 3350 0

  • 1
    they are eukaryotic cells
    Correct
    Wrong
  • 2
    they do not have plasmids
    Correct
    Wrong
  • 3
    only yeast cells allow the gene to be cloned
    Correct
    Wrong
  • 4
    they easily form colonies
    Correct
    Wrong
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Answer : 1. "they are eukaryotic cells"
Explanation :

Answer: A) they are eukaryotic cells Explanation: If you were to produce a protein in bacterial cloning systems, you would not get the same post transcriptional and post translational modifications because the prokaryotic and eukaryotic systems work differently on the modifications. Thus human recombinant protein genes are usually cloned in yeast cells. Also since they have a short generation time, they can be easily culture.

Q: Which phrase breaks the rule of parallel structure? 2280 0

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Answer :
Explanation :

Parallel structure means using the same pattern of words to show that two or more ideas have the same level of importance and to help the reader comprehend what is being written.. This can happen at the word, phrase, or clause level. The usual way to join parallel structures is with the use of coordinating conjunctions such as "and" or "or."

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