Chemistry Questions Practice Question and Answer

Q:

Which of the following is the strongest hydracid known?

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  • 1
    HCN
    Correct
    Wrong
  • 2
    Hclo4
    Correct
    Wrong
  • 3
    HCL
    Correct
    Wrong
  • 4
    Hno3
    Correct
    Wrong
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Answer : 2. "Hclo4"

Q:

How many carbon atoms are joined in buckminsterfullerene?

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  • 1
    30
    Correct
    Wrong
  • 2
    90
    Correct
    Wrong
  • 3
    60
    Correct
    Wrong
  • 4
    120
    Correct
    Wrong
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Answer : 3. "60"

Q:

______fibre is used in making bullet proof vests.

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  • 1
    Nylon-66
    Correct
    Wrong
  • 2
    Terylene
    Correct
    Wrong
  • 3
    Kevlar
    Correct
    Wrong
  • 4
    Lexan
    Correct
    Wrong
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Answer : 3. "Kevlar"

Q:

In 1931, who recognised that an aromatic compound must have an odd number of pairs of electrons, which can mathematically be written as 4n+2 (n = 0,1,2,3 etc.)?

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  • 1
    Jacob Berzelius
    Correct
    Wrong
  • 2
    Erich Huckel
    Correct
    Wrong
  • 3
    Antoine Lavoisier
    Correct
    Wrong
  • 4
    Auguste Laurent
    Correct
    Wrong
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Answer : 2. "Erich Huckel"

Q:

Find the temperature at which the below reaction will be in equilibrium if the enthalpy and entropy change for the reaction is 30 Kj mol-1 and 105 J K-1 mol-1 respectively
Br2(l) + Cl2(g) → 2BrCl(g)

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  • 1
    273 K
    Correct
    Wrong
  • 2
    300 K
    Correct
    Wrong
  • 3
    450 K
    Correct
    Wrong
  • 4
    285.7 K
    Correct
    Wrong
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Answer : 4. "285.7 K"

Q:

What is the more common name for solid carbon dioxide?

765 0

  • 1
    Quick Silver
    Correct
    Wrong
  • 2
    Epsom
    Correct
    Wrong
  • 3
    Potash
    Correct
    Wrong
  • 4
    Dry Ice
    Correct
    Wrong
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Answer : 4. "Dry Ice"

Q:

A strong acid has a ______________

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  • 1
    Weak conjugate acid
    Correct
    Wrong
  • 2
    Weak conjugate base
    Correct
    Wrong
  • 3
    Strong conjugate base
    Correct
    Wrong
  • 4
    Strong conjugate acid
    Correct
    Wrong
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Answer : 2. "Weak conjugate base"

Q:

Read the following questions carefully and answer them. 

The isotope of Uranium used in atomic reactors is

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

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