Chemistry General Knowledge Questions Practice Question and Answer

Q:

Which of the following is an organic compound with the formula C6H4Cl2 that is used as a fumigant insecticide to control cloth months?

321 0

  • 1
    Paradichlorobenzene
    Correct
    Wrong
  • 2
    Chlorobenzene
    Correct
    Wrong
  • 3
    Benzoyl chloride
    Correct
    Wrong
  • 4
    Ethylbenzene
    Correct
    Wrong
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Answer : 1. "Paradichlorobenzene"

Q:

Which of the following is incorrect with reference to hypophysis?

473 0

  • 1
    It lies a bony depression called sell turcica
    Correct
    Wrong
  • 2
    Connected to hypothalamus through infundibulum
    Correct
    Wrong
  • 3
    Anatomically divided into adeno-hypophysis and neurohypophysis
    Correct
    Wrong
  • 4
    Neurohypophysis synthesizes ADH and OT
    Correct
    Wrong
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Answer : 4. "Neurohypophysis synthesizes ADH and OT"

Q:

Electronic configuration of the outer shell of the element Gd with atomic number 64 is

366 0

  • 1
    4f4 5df 6s1
    Correct
    Wrong
  • 2
    4f3 5df 6s2
    Correct
    Wrong
  • 3
    4f5 5d4 6s1
    Correct
    Wrong
  • 4
    4f7 5d1 6s2
    Correct
    Wrong
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Answer : 4. "4f7 5d1 6s2"

Q:

What will be the work done by 3 moles of an ideal gas when it expands spontaneously in vacuum?

328 0

  • 1
    Zero
    Correct
    Wrong
  • 2
    Infinite
    Correct
    Wrong
  • 3
    3 joules
    Correct
    Wrong
  • 4
    9 joules
    Correct
    Wrong
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Answer : 1. "Zero "

Q:

What is the function of a catalyst in a chemical reaction?

310 0

  • 1
    Decrease rate constant of reaction
    Correct
    Wrong
  • 2
    Increases activation energy of reaction
    Correct
    Wrong
  • 3
    Reduces enthalpy of reaction
    Correct
    Wrong
  • 4
    Does not affect the equilibrium constant of reaction
    Correct
    Wrong
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Answer : 4. "Does not affect the equilibrium constant of reaction"

Q:

Find the compound which undergoes nucleophilic substitution reaction exclusively by an SN1 mechanism

330 0

  • 1
    Benzyl chloride
    Correct
    Wrong
  • 2
    Chlorobenzene
    Correct
    Wrong
  • 3
    Ethyl chloride
    Correct
    Wrong
  • 4
    Isopropyl chloride
    Correct
    Wrong
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Answer : 1. "Benzyl chloride "

Q:

Which of the following process is used to do maximum work done on the ideal gas if the gas is compressed to half of its initial volume?

294 0

  • 1
    Isothermal
    Correct
    Wrong
  • 2
    Isochoric
    Correct
    Wrong
  • 3
    Isobaric
    Correct
    Wrong
  • 4
    Adiabatic
    Correct
    Wrong
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Answer : 4. "Adiabatic"

Q:

Why do we boil the extract with conc. HNO3 in Lassaigne’s test for halogens?

223 0

  • 1
    To increase the concentration of NO3- ions
    Correct
    Wrong
  • 2
    To increase the solubility product of AgCl
    Correct
    Wrong
  • 3
    It increases the precipitation of AgCl
    Correct
    Wrong
  • 4
    For the decomposition of Na2S AND NaCN formed
    Correct
    Wrong
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Answer : 4. "For the decomposition of Na2S AND NaCN formed"

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