Chemistry Questions Practice Question and Answer

Q:

Impure camphor is purified by 

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  • 1
    sublimation
    Correct
    Wrong
  • 2
    fractional crystallization
    Correct
    Wrong
  • 3
    fractional distillation
    Correct
    Wrong
  • 4
    steam distillation
    Correct
    Wrong
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Answer : 1. "sublimation"

Q:

Water gas is the mixture of 

1003 0

  • 1
    carbon dioxide and hydrogen
    Correct
    Wrong
  • 2
    carbon monoxide and hydrogen
    Correct
    Wrong
  • 3
    carbon dioxide and nitrogen
    Correct
    Wrong
  • 4
    carbon monoxide and nitrogen bear
    Correct
    Wrong
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Answer : 2. "carbon monoxide and hydrogen "

Q:

Which is the purest form of iron?

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  • 1
    Steel
    Correct
    Wrong
  • 2
    Cast iron
    Correct
    Wrong
  • 3
    Pig iron
    Correct
    Wrong
  • 4
    Wrought iron
    Correct
    Wrong
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Answer : 4. "Wrought iron "

Q:

German silver used for making utensils is an alloy of 

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  • 1
    copper silver nickel
    Correct
    Wrong
  • 2
    copper zinc nickel
    Correct
    Wrong
  • 3
    copper zinc aluminum
    Correct
    Wrong
  • 4
    copper nickel aluminum
    Correct
    Wrong
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Answer : 2. "copper zinc nickel "

Q:

Milk is a natural 

1541 0

  • 1
    Solution
    Correct
    Wrong
  • 2
    Mixture
    Correct
    Wrong
  • 3
    Suspension
    Correct
    Wrong
  • 4
    Emulsion
    Correct
    Wrong
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Answer : 4. "Emulsion "

Q:

The gas used for artificial fruit ripening of green fruit is 

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  • 1
    Ethane
    Correct
    Wrong
  • 2
    Ethylene
    Correct
    Wrong
  • 3
    Methane
    Correct
    Wrong
  • 4
    Acetylene
    Correct
    Wrong
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Answer : 4. "Acetylene "

Q:

Percentage of lead in lead pencil is: 

1190 0

  • 1
    zero
    Correct
    Wrong
  • 2
    20
    Correct
    Wrong
  • 3
    80
    Correct
    Wrong
  • 4
    7
    Correct
    Wrong
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Answer : 1. "zero "

Q:

What is the main raw material in glass?

1493 0

  • 1
    Copper
    Correct
    Wrong
  • 2
    Zink
    Correct
    Wrong
  • 3
    Cadmium
    Correct
    Wrong
  • 4
    Silica
    Correct
    Wrong
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Answer : 4. "Silica"

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