IIT JEE Practice Question and Answer

Q: Autoimmune diseases associated with vitiligo 2174 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: Find value of log27 +log 8 +log1000log 120 2173 1

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

Answer: B) 3/2 Explanation:  = log 33 + log 23+ log 103log10×3×22        =log33 12+log 23+log 10312log(10×3×22)                 =12log 33+3 log 2+12 log103log10+log3+log22                 =32log 3 + 2 log 2 + log 10log 3 + 2 log 2 + log 10 = 32

Q: Which process allows water to enter the atmosphere? 2173 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: What important polymer is located in the nucleus? 2172 0

  • 1
    Ribosomes
    Correct
    Wrong
  • 2
    Chromosomes
    Correct
    Wrong
  • 3
    DNA
    Correct
    Wrong
  • 4
    Proteins
    Correct
    Wrong
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Answer : 3. "DNA"
Explanation :

Answer: C) DNA Explanation: The most important polymer present in the nucleus is DNA- the master molecule. It is a polymer of Nucleotides.

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: Headquarters of Competition Commission of India (CCI) is in 2171 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.

Q: Which of the following is a chemical property? 2171 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 ? 2171 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:

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