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Chemistry Test-...

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  • Question 1
    4 / -1

    Modern detergents contain enzyme preparations of

  • Question 2
    4 / -1

    Electronic configuration of Cr is:

  • Question 3
    4 / -1

    The states of matter having no definite shape but definite volume:

  • Question 4
    4 / -1

    Given that \(C + O _2 \rightarrow CO _2: \Delta H ^{\circ}=- x kJ\)

    \(2 CO + O _2 \rightarrow 2 CO _2: \Delta H ^{\circ}=- y kJ\)

    the enthalpy of formation of carbon monoxide will be:

  • Question 5
    4 / -1

    Which of the statements about the following reaction are incorrect?

    \(2 \mathrm{PbO}(s)+\mathrm{C}(s) \rightarrow 2 \mathrm{~Pb}(s)+\mathrm{CO}_{2}(g)\)

  • Question 6
    4 / -1

    Elements and compounds that occur naturally in the earth's crust are called:

  • Question 7
    4 / -1

    Which of the following is not a greenhouse gas?

  • Question 8
    4 / -1

    Ethanol disolves in water because _____________.

  • Question 9
    4 / -1

    Maintenance-free batteries, now in use, in place of common batteries, have:

  • Question 10
    4 / -1

    According to the Avogadro's Law, equal volumes of two different gases, under same conditions of temperature and pressure, contain equal number of:

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