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Chemistry Test - 55

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Chemistry Test - 55
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Weekly Quiz Competition
  • Question 1
    1 / -0

    Which of the following is a non metal that remains liquid at room temperature ?

    Solution

    The chemical element with the atomic number 35, Bromine is a non metal that remains liquid at room temperature. Mercury also remains liquid at room temperature but it is a metal. Bromine is the third lightest halogen.

  • Question 2
    1 / -0

    A ‘breath test’ used by traffic police to check drunken driving uses ____?

    Solution

    A ‘breath test’ used by traffic police to check drunken driving uses potassium dichromatic-sulphuric acid.

  • Question 3
    1 / -0

    The credit for the discovery of transuranic element goes to

    Solution

    The credit for the discovery of transuranic element goes to Seaborg.

  • Question 4
    1 / -0

    Electromagnetic radiation with maximum wavelength is

    Solution

    Electromagnetic radiation with maximum wavelength is radio waves.

  • Question 5
    1 / -0

    Name the Scientist who stated that matter can be converted into energy

    Solution

    Name the Scientist who stated that matter can be converted into Einstein energy.

  • Question 6
    1 / -0

    The enzyme that converts glucose to ethyl alcohol is

    Solution

    The enzyme that converts glucose to ethyl alcohol is Zymase.

  • Question 7
    1 / -0

    A mixture of sand and naphthalene can be separated by

    Solution

    A mixture of sand and naphthalene can be separated by Sublimation.

  • Question 8
    1 / -0

    Sodium carbonate crystal lose water molecules this property is called

    Solution

    Sodium carbonate crystal lose water molecules this property is called efflorescence.

  • Question 9
    1 / -0

    The discovery of neutron became very late because

    Solution

    The discovery of neutron became very late because it does not carry any charge.

  • Question 10
    1 / -0

    Silver Mirror test is given by which one of the following compounds?

    1. Benzophenone

    2. Acetaldehyde

    3. Acetone

    4. Formaldehyde

    Solution

    Both Formaldehyde and Acetaldehyde will give this test

    HCHO−−−−−−[Ag(NH3)+2] −→ Silver mirrorAg + Organic compound

    CH3−CHO −−−−−−[Ag(NH3)+2]−→AgSilver mirror+ Organic compound

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