Chemistry Practice Question and Answer

Q:

Bronze is an alloy of – 

1389 0

  • 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:

Which of the following is the strongest hydracid known?

1387 0

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

Q:

'Every substance in the world is made up of very fine particles.' Who said this first?

1387 0

  • 1
    Dalton
    Correct
    Wrong
  • 2
    Kanad
    Correct
    Wrong
  • 3
    Rutherford
    Correct
    Wrong
  • 4
    Avogadro
    Correct
    Wrong
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Answer : 1. "Dalton"

Q:

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

1384 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:

Which of the following is purified by Elevation method-

1381 0

  • 1
    Naphthalene
    Correct
    Wrong
  • 2
    Ether
    Correct
    Wrong
  • 3
    Benzoic acid
    Correct
    Wrong
  • 4
    None of these
    Correct
    Wrong
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Answer : 1. "Naphthalene"

Q:

Who was the inventor of positron?

1380 0

  • 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:

What type of indicator is turmeric, litmus paper etc.?

1379 0

  • 1
    synthesized
    Correct
    Wrong
  • 2
    Natural
    Correct
    Wrong
  • 3
    Natural and synthesized
    Correct
    Wrong
  • 4
    Others
    Correct
    Wrong
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Answer : 2. "Natural"

Q:

Who proposed the word 'molecule'?

1375 0

  • 1
    E. Rutherford
    Correct
    Wrong
  • 2
    J.J. Thomson
    Correct
    Wrong
  • 3
    Democritus
    Correct
    Wrong
  • 4
    John Dolton
    Correct
    Wrong
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Answer : 3. "Democritus"

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