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Chemistry Test 38
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Chemistry Test 38
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  • Question 1/4
    4 / -1

    The major role of fluorspar (CaF2) which is added in small quantity in the electrolytic reduction of alumina dissolved in fused cryolite (Na3AlF6) is :-

    (a) as a catalyst

    (b) to make the fused mixture very conducting

    (c) to lower the temperature of melting

    (d) to decrease the rate of oxidation of carbon at the anode

  • Question 2/4
    4 / -1

    A reaction with respect to reactant A has rate constant 6 min–1. If we start with [A] = 0.5 mol/L. when would [A] reach the value 0.05 mol/L :-

  • Question 3/4
    4 / -1

    If the observed and theoretical molecular mass of NaCl is found to be 31.80 and 58.80 respectively then the degree of dissociation of NaCl is :-

  • Question 4/4
    4 / -1

    The most suitable reagent for the conversion of RCH2OH → RCHO is :-

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