IIT JEE Practice Question and Answer

Q: Which of the following chemical compounds has the highest boiling point? 1880 0

  • 1
    Dimethyl ether (CH3OCH3)
    Correct
    Wrong
  • 2
    Methanol (CH3OH)
    Correct
    Wrong
  • 3
    Methane (CH4)
    Correct
    Wrong
  • 4
    None
    Correct
    Wrong
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Answer : 2. "Methanol (CH3OH)"
Explanation :

Answer: B) Methanol (CH3OH) Explanation: Chemical Compounds with stronger intermolecular forces have higher boiling points. ┬а The order of strengths of intermolecular forces is: ┬аLondon dispersion < dipole-dipole <┬аH-bonding ┬а Methane (CH4)┬атАФ London dispersion forces Dimethyl ether (CH3OCH3)┬атАФ dipole-dipole attractions Methanol (CH3OH)┬атАФ hydrogen bonding Therefore,┬аMethanol -┬аCH3OH┬аwith H-Bonding have highest Boiling Point among the given chemical compounds.

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Answer :
Explanation :

The poison was in the ice. When the girl drank the iced tea, the ice was still fully frozen. Gradually, as the ice cubes melted the poison was released into the drink. ┬а Hence, the girl who died, drunk the tea after the ice melted. So, she was died.

Q: Which of the following is a healthy blood pressure level? 1879 0

  • 1
    120/80
    Correct
    Wrong
  • 2
    140/90
    Correct
    Wrong
  • 3
    135/75
    Correct
    Wrong
  • 4
    130/70
    Correct
    Wrong
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Answer : 1. "120/80"
Explanation :

Answer: A) 120/80 Explanation: A normal reading would be any blood pressure below 120/80 mm Hg and above 90/60 mm Hg in an adult. If you're in the normal range, no medical intervention is needed. However, you should maintain a healthy lifestyle and healthy weight to help prevent hypertension from developing.

Q: What does the judicial branch do? 1879 0

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Answer :
Explanation :

The United States government has 3 branches, which all serve an important role in running the government and keeping our system of laws in place. ┬а 1.┬аThe legislative branch 2. The executive branch┬а 3.┬аThe judicial branch ┬а The legislative branch makes the laws while the executive branch enforces these laws.┬а The judicial branch is a system of courts that applies the laws. ┬а Both the federal government and each of the 5 states have individual judicial branches which all serve this purpose. ┬а For example ::┬а If the federal government were like a basketball game, the judicial branch is much like the referee that helps settle disputes. The executive branch and the legislative branch are often like the players in the game trying to score points against each other, and the judicial branch is there to clarify the rules and make sure each side is acting fairly.

Q: Guess the Hiding Letter ┬а? 1879 0

  • 1
    D
    Correct
    Wrong
  • 2
    K
    Correct
    Wrong
  • 3
    L
    Correct
    Wrong
  • 4
    G
    Correct
    Wrong
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Answer : 4. "G"
Explanation :

Answer: D) G Explanation: Starting from letter 'S' add 5 in the clock wise direction to get the next letter in English alphabets. Here S + 5 => 19 + 5 = 24 => X X + 5 = 24 + 5 = 3 => C Similarly,┬а B + 5 = G

Q: Who has won the men's singles title at the 82nd Senior National Championship? 1879 0

  • 1
    H S Prannoy
    Correct
    Wrong
  • 2
    Ashwini Kumar
    Correct
    Wrong
  • 3
    Rakesh Kumar
    Correct
    Wrong
  • 4
    Kidambi Srikanth
    Correct
    Wrong
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Answer : 1. "H S Prannoy"
Explanation :

Answer: A) H S Prannoy Explanation: H S Prannoy has won the menтАЩs singles title at the 82nd Senior National Championship Senior National Badminton Championships in Nagpur, Maharashtra on November 8, 2017. He defeated higher ranked Kidambi Srikanth in the final by 21- 15, 16- 21, 21-7.

Q: If the HCF of 210 and 55 is expressible in the form of 210 x 5 + 55P, then value of P = ? 1879 0

  • 1
    -23
    Correct
    Wrong
  • 2
    27
    Correct
    Wrong
  • 3
    16
    Correct
    Wrong
  • 4
    -19
    Correct
    Wrong
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Answer : 4. "-19"
Explanation :

Answer: D) -19 Explanation: HCF of 210 and 55 is 5 Now, 210x5 + 55P = 5 => 1050 + 55P = 5 => 55P = -1045 => P = -1045/55 => P = -19.

Q: What has keys but no locks? 1878 0

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Answer :
Explanation :

A Keyboard has keys but no locks.

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