IIT JEE Practice Question and Answer

Q: Air pressure is measured in which of the following units? 1011 0

  • 1
    Steridian
    Correct
    Wrong
  • 2
    kg/mts
    Correct
    Wrong
  • 3
    Newton
    Correct
    Wrong
  • 4
    Pascal
    Correct
    Wrong
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Answer : 4. "Pascal"
Explanation :

Answer: D) Pascal Explanation: Pressure = (Net Force) / (Applied area) = Newton / square meters Measuring units of pressure are: . Pascal. Bar. Torr. Pounds per square inch (psi). Standard atmosphere (atm).

Q: Which of the following is a polymer? 1011 0

  • 1
    Glycerol
    Correct
    Wrong
  • 2
    Amino acid
    Correct
    Wrong
  • 3
    Nucleic acid
    Correct
    Wrong
  • 4
    Fatty acid
    Correct
    Wrong
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Answer : 3. "Nucleic acid"
Explanation :

Answer: C) Nucleic acid Explanation: Nucleic acid is a polymer among the given options.

Q: I go in hard. I come out soft. You blow me hard. What am I? 1010 0

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Answer :
Explanation :

Gum.

Q: First woman to win olympic medal for India 1010 0

  • 1
    Mary Kom
    Correct
    Wrong
  • 2
    Saina Nehwal
    Correct
    Wrong
  • 3
    Karnam Malleshwari
    Correct
    Wrong
  • 4
    P.V. Sindhu
    Correct
    Wrong
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Answer : 3. "Karnam Malleshwari"
Explanation :

Answer: C) Karnam Malleshwari Explanation: The first Indian woman to ever win an Olympic medal for India was Karnam Malleswari who won a bronze medal at the Sydney Olympics 2000 in the Women's 69 kg category in Weightlifting.   Karnam Malleswari is a retired Indian weightlifter. In 1995 she received the Rajiv Gandhi Khel Ratna, India's highest sporting honour, and in 1999 the civilian Padma Shri award.   After that Indian women who won Olymic medals to India was :    1. Mary Kom at the London 2012 Summer Olympics won bronze medal in women's boxing.   2. Saina Nehwal was the first Indian to win a medal in Badminton at the Olympics, by winning the Bronze medal at the London Olympics 2012.   3. Sakshi Malik became the first Indian woman to win a medal in Wrestling. She won the Bronze medal in Women's 58 kg freestyle wrestling in 2016 Summer Olympics held in Rio.   4. P.V. Sindhu became the first ever Indian woman to win the Silver medal at the Olympics, by reaching the Badminton final at Rio Olympics 2016.

Q: The average salinity of seawater is 1009 0

  • 1
    35%
    Correct
    Wrong
  • 2
    3.5%
    Correct
    Wrong
  • 3
    3%
    Correct
    Wrong
  • 4
    2.5%
    Correct
    Wrong
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Answer : 2. "3.5%"
Explanation :

Answer: B) 3.5% Explanation: Seawater or salt water is water from a sea or ocean. On average, seawater in the world's oceans has a salinity of approximately 3.5% or 35 parts per thousand. This means that for every 1 litre (1000 mL) of seawater there are 35 grams of salts dissolved in it.   Hence, The average salinity of seawater is 3.5%.

Q: Order of basicity of amines in gaseous state? 1009 0

  • 1
    2'> 1'> 3' > NH3
    Correct
    Wrong
  • 2
    3' > 2' > 1'> NH3
    Correct
    Wrong
  • 3
    1' > 2' > 3'> NH3
    Correct
    Wrong
  • 4
    2'> 3'> 1' > NH3
    Correct
    Wrong
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Answer : 2. "3' > 2' > 1'> NH3"
Explanation :

Answer: B) 3' > 2' > 1'> NH3 Explanation: The order of basicity in ammonia is different in gaseous phases vs. aqueous phases due to hydrogen bonding.   So in gaseous phases it's the well known: 3' > 2' > 1'> NH3. Just so we're on the same page, this is due to the inductive effect of electron donating alkyl groups--they destabilize the lone pair on nitrogen atom, making nitrogen more basic.   But in aqueous phase, the order is slightly different: 2'> 1'> 3' > NH3.

Q: Habeas Corpus Act 1679 1009 0

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Answer :
Explanation :

The Habeas Corpus writ is issued to produce a person who has been detained, whether in prison or in private custody, before a court and to release him if such detention is found illegal.   The right to habeas corpus has been used by the Indian judiciary effectively only in order to secure the release of a person from illegal detention.   If the detained person is unable to seek the writ of habeas corpus, someone else mayact so on his behalf.

Q: 3/4 divided by 2 is 1008 0

  • 1
    3/2
    Correct
    Wrong
  • 2
    2/3
    Correct
    Wrong
  • 3
    8/3
    Correct
    Wrong
  • 4
    3/8
    Correct
    Wrong
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Answer : 4. "3/8"
Explanation :

Answer: D) 3/8 Explanation: 3/4 divided by 2 = 3/4/2 = 3/4x2 = 3/8.   Hence, 3/4 divided by 2 is equal to 3/8.

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