Chemistry Practice Question and Answer

Q:

Bronze is an alloy of – 

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  • 1
    Copper and zinc
    Correct
    Wrong
  • 2
    Copper and Lead
    Correct
    Wrong
  • 3
    Copper and Tin
    Correct
    Wrong
  • 4
    Copper and Silver
    Correct
    Wrong
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Answer : 3. "Copper and Tin "

Q:

Read the following questions carefully and answer them. 

The polymer used in making plastic crockery is 

1622 0

  • 1
    Decron
    Correct
    Wrong
  • 2
    Nylon
    Correct
    Wrong
  • 3
    Bakelite
    Correct
    Wrong
  • 4
    Melamine
    Correct
    Wrong
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Answer : 4. "Melamine"

Q:

Which is not a property of Ionic bond?

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  • 1
    Gain of electrons
    Correct
    Wrong
  • 2
    Losses of electrons
    Correct
    Wrong
  • 3
    Transfer of electrons
    Correct
    Wrong
  • 4
    Sharing of electrons
    Correct
    Wrong
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Answer : 4. "Sharing of electrons"

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)

1608 0

  • 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:

Who was the inventor of positron?

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  • 1
    Chadwick
    Correct
    Wrong
  • 2
    Anderson
    Correct
    Wrong
  • 3
    Rutherford
    Correct
    Wrong
  • 4
    J.J. Thomson
    Correct
    Wrong
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Answer : 2. "Anderson "

Q:

Which gas is produced when the dilute acids are reacted with metals?

1606 0

  • 1
    Hydrogen
    Correct
    Wrong
  • 2
    nitrogen
    Correct
    Wrong
  • 3
    Carbon dioxide
    Correct
    Wrong
  • 4
    Oxygen
    Correct
    Wrong
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Answer : 1. "Hydrogen"

Q:

Which of the following properties does not show metals?

1606 0

  • 1
    Sound nature
    Correct
    Wrong
  • 2
    Tensile
    Correct
    Wrong
  • 3
    electrical conductivity
    Correct
    Wrong
  • 4
    Mandata
    Correct
    Wrong
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Answer : 4. "Mandata"

Q:

The catalyst is a substance through which the rates of chemical reactions ________.

1604 0

  • 1
    Decreases
    Correct
    Wrong
  • 2
    Changes
    Correct
    Wrong
  • 3
    Increases
    Correct
    Wrong
  • 4
    None of these
    Correct
    Wrong
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Answer : 3. "Increases "

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