IIT JEE Practice Question and Answer

Q: What event prompted the formation of the first continental congress? 2172 0

  • 1
    The Boston Massacre
    Correct
    Wrong
  • 2
    The battles of Lexington and Concord
    Correct
    Wrong
  • 3
    The Boston Tea Party
    Correct
    Wrong
  • 4
    None of the above
    Correct
    Wrong
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Answer : 3. "The Boston Tea Party"
Explanation :

Answer: C) The Boston Tea Party Explanation: Before the shots were fired at Lexington and Concord, the colonies made an attempt to settle the concerns and frustrations raised with the Intolerable Acts through debate and discussion. Thus, the First Continental Congress was called to order on September 5th, 1774. The First Continental Congress was a meeting of delegates from twelve of the Thirteen Colonies early in the American Revolution. It was called in response to the Intolerable Acts passed by the British Parliament, which the British referred to as the Coercive Acts, with which the British intended to punish Massachusetts for the Boston Tea Party.

Q: If sum of upstream and downstream speed of a boat is 82 kmph, and the boat travels 105 km. upstream in 3 hr, Find the time taken by boat to cover 126 km downstream. 2172 0

  • 1
    2.8 hrs
    Correct
    Wrong
  • 2
    2.7 hrs
    Correct
    Wrong
  • 3
    2.6 hrs
    Correct
    Wrong
  • 4
    2.5 hrs
    Correct
    Wrong
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Answer : 2. "2.7 hrs"
Explanation :

Answer: B) 2.7 hrs Explanation: Let Speed of boat in still water = b Let Speed of still water = w Then we know that, Speed of Upstream = U = boat - water Speed of Downstream = D = boat + water Given, U + D = 82 b - w + b + w = 82 2b = 82 => b = 41 kmph From the given data, 41 - w = 105/3 = 35 w = 6 kmph Now, b + w = 126/t => 41 + 6 = 126/t => t = 126/47  = 2.68 hrs.

Q: Autoimmune diseases associated with vitiligo 2172 0

  • 1
    Thyroiditis
    Correct
    Wrong
  • 2
    Diabetes mellitus
    Correct
    Wrong
  • 3
    Psoriasis
    Correct
    Wrong
  • 4
    All of the above
    Correct
    Wrong
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Answer : 4. "All of the above"
Explanation :

Answer: D) All of the above Explanation: Vitiligo is a condition in which the skin loses its pigment cells (melanocytes). This can result in discolored patches in different areas of the body, including the skin, hair, retina and mucous membranes. Many disorders have been linked to vitiligo. They are:: Hashimoto thyroiditis, Graves disease, Addison disease and diabetes mellitus, alopecia areata, pernicious anemia, inflammatory bowel disease, psoriasis, and autoimmune polyglandular syndrome.

Q: Which is the highest gallantry award in India? 2172 0

  • 1
    Param Vir Chakra
    Correct
    Wrong
  • 2
    Kirti Chakra
    Correct
    Wrong
  • 3
    Vir Chakra
    Correct
    Wrong
  • 4
    Param Vishishtat Seva Medal
    Correct
    Wrong
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Answer : 1. "Param Vir Chakra"
Explanation :

Answer: A) Param Vir Chakra Explanation: Param Vir Chakra (PVC) is India's highest military decoration awarded for the displaying distinguished acts of valor during the war.   Ashok Chakra Award – An Indian military decoration awarded for valour, courageous action or self-sacrifice away from the battlefield. It is the peacetime equivalent of the Param Vir Chakra. Kirti Chakra – Second in order of precedence of peacetime gallantry awards. Maha Vir Chakra (MVC) is literally called a great warrior medal. Vir Chakra is an Indian gallantry award presented for acts of bravery in the wars.

Q: Which process allows water to enter the atmosphere? 2171 0

  • 1
    Transpiration
    Correct
    Wrong
  • 2
    Respiration
    Correct
    Wrong
  • 3
    Condensation
    Correct
    Wrong
  • 4
    Evaporation
    Correct
    Wrong
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Answer : 4. "Evaporation"
Explanation :

Answer: D) Evaporation Explanation: Evaporation is the process that allows water to enter into the atmosphere. Sunlight turns liquid water into water vapor which then rises higher into the atmosphere and forms into clouds.   Plants, too, help water get into the atmosphere through a process called transpiration.

Q: Which of the following is a chemical property? 2170 0

  • 1
    Reactivity
    Correct
    Wrong
  • 2
    Solubility
    Correct
    Wrong
  • 3
    Density
    Correct
    Wrong
  • 4
    All of the above
    Correct
    Wrong
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Answer : 1. "Reactivity"
Explanation :

Answer: A) Reactivity Explanation: The ability of two or more substances to combine to form other substances is called Reactivity.

Q: Which player has become the first left-arm spinner to take 400 wickets in Test cricket ? 2169 0

  • 1
    Ravindra Jadeja
    Correct
    Wrong
  • 2
    Mitchell Starc
    Correct
    Wrong
  • 3
    Rangana Herath
    Correct
    Wrong
  • 4
    Kuldeep Yadav
    Correct
    Wrong
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Answer : 3. "Rangana Herath"
Explanation :

Answer: C) Rangana Herath Explanation:

Q: Headquarters of Competition Commission of India (CCI) is in 2168 0

  • 1
    New Delhi
    Correct
    Wrong
  • 2
    Hyderabad
    Correct
    Wrong
  • 3
    Bangalore
    Correct
    Wrong
  • 4
    Kolkata
    Correct
    Wrong
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Answer : 1. "New Delhi"
Explanation :

Answer: A) New Delhi Explanation: Competition Commission of India (CCI) was established on 14th October 2003. It headquarters in New Delhi.

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