IIT JEE Practice Question and Answer

Q: The gap between two communicating neurons is termed 1893 0

  • 1
    Schwann cell
    Correct
    Wrong
  • 2
    Effector
    Correct
    Wrong
  • 3
    Synaptic cleft
    Correct
    Wrong
  • 4
    Cell body
    Correct
    Wrong
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Answer : 3. "Synaptic cleft"
Explanation :

Answer: C) Synaptic cleft Explanation: A neuron or nerve cell is a cell that carries electrical impulses. Neurons are the basic units of the nervous system and its most important part is the brain. Every neuron is made of a cell body (also called a soma), dendrites and an axon. Dendrites and axons are nerve fibres.   The gap between two communicating neurons is termed Synaptic cleft.

Q: Which of the following is not a monotheistic religion? 1893 0

  • 1
    Hinduism
    Correct
    Wrong
  • 2
    Christianity
    Correct
    Wrong
  • 3
    Islam
    Correct
    Wrong
  • 4
    Sikhism
    Correct
    Wrong
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Answer : 1. "Hinduism"
Explanation :

Answer: A) Hinduism Explanation: Monotheism is the belief in a single all-powerful god, as opposed to religions that believe in multiple gods. Sikhism, Judaism, Christianity, and Islam are widely practiced forms of monotheism.

Q: Which structure is common to plant and animal cells? 1893 0

  • 1
    Centriole
    Correct
    Wrong
  • 2
    Chloroplast
    Correct
    Wrong
  • 3
    Central Vacuole
    Correct
    Wrong
  • 4
    Mitochondria
    Correct
    Wrong
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Answer : 4. "Mitochondria"
Explanation :

Answer: D) Mitochondria Explanation: Mitochondria are present in both plant and animal cells.

Q: 12 N in a C = 1893 0

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Answer :
Explanation :

12 N in a C means 12 Numbers in a Clock.

Q: What does the Aufbau Principle state 1893 0

  • 1
    Electrons will be added to an atom starting from the lowest possible level or sublevel.
    Correct
    Wrong
  • 2
    Electrons will be added to an atom only if the orbitals are different colors.
    Correct
    Wrong
  • 3
    Electrons will be added to an atom in a random order.
    Correct
    Wrong
  • 4
    Electrons will be added to an atom in a symmetrical manner.
    Correct
    Wrong
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Answer : 1. "Electrons will be added to an atom starting from the lowest possible level or sublevel."
Explanation :

Answer: A) Electrons will be added to an atom starting from the lowest possible level or sublevel. Explanation: The Aufbau Principle states that in the ground state of an atom, an electron enters the orbital with lowest energy first and subsequent electrons are fed in the order of increasing energies.

Q: If [P @ Q] means [P is wife of Q], [P+Q] means [P is father of Q] and [P - Q] means [P is sister of Q] then in [G+ H - R @ D], how is G related to D ? 1893 0

  • 1
    Son-in-law
    Correct
    Wrong
  • 2
    Grand father
    Correct
    Wrong
  • 3
    Father-in-law
    Correct
    Wrong
  • 4
    Brother
    Correct
    Wrong
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Answer : 3. "Father-in-law"
Explanation :

Answer: C) Father-in-law Explanation: "G is father in law of D"G+H means G is father of HH is either son or daughter of GH-R means H is sister of RR@D means R is wife of Dso H and R are sistersand daughters of Gso husband of R i.e. D is son in law of Gor G is father in law of D

Q: Do plant cells have Mitochondria? 1891 0

  • 1
    Yes
    Correct
    Wrong
  • 2
    No
    Correct
    Wrong
  • 3
    Can't be determined
    Correct
    Wrong
  • 4
    None
    Correct
    Wrong
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Answer : 1. "Yes"
Explanation :

Answer: A) Yes Explanation: Yes, plant cells have Mitochondria. While plant cells have chloroplasts to photosynthesize, they also require ATP for cellular functions, and do use oxygen to break down some of the sugar they produce in order to generate that ATP. They need mitochondria for this. In particular, at night when there is no light, plants undergo cellular respiration since there is no sunlight to photosynthesize. They do, however, produce far more sugar and oxygen through photosynthesis than they use up in respiration.

Q: Which continent has the least countries? 1891 0

  • 1
    Africa
    Correct
    Wrong
  • 2
    South America
    Correct
    Wrong
  • 3
    Antarctica
    Correct
    Wrong
  • 4
    Europe
    Correct
    Wrong
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Answer : 3. "Antarctica"
Explanation :

Answer: C) Antarctica Explanation: Africa - 54 countries South America - 12 countries Antarctica - 0 countries Europe - 43 countries.   Hence, Antarctica continent has the least countries.

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