Related Questions

    1.

    Sodium forms Na+{\rm{N}}{{\rm{a}}^ + } and not Na2+{\rm{N}}{{\rm{a}}^{2 + }} because:

    A

    Sodium contains only one electron in outermost shell

    B

    First ionization potential is small and the difference in first and second ionization potentials is very large

    C

    Radius of Na+{\rm{N}}{{\rm{a}}^ + } is much smaller than of Na+{\rm{N}}{{\rm{a}}^ + }

    D

    None of the above

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    3.

    On heating washing soda, we get:

    A

    CO{\rm{CO}}

    B

    CO+CO2{\rm{CO}} + {\rm{C}}{{\rm{O}}_2}

    C

    CO2{\rm{C}}{{\rm{O}}_2}

    D

    H2O(v){{\rm{H}}_2}{\rm{O}}\left( v \right)

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    5.

    Brine is chemically:

    A

    Conc. Solution of Na2CO3{\rm{N}}{{\rm{a}}_2}{\rm{C}}{{\rm{O}}_3}

    B

    Conc. Solution of Na2SO4{\rm{N}}{{\rm{a}}_2}{\rm{S}}{{\rm{O}}_4}

    C

    Conc. Solution of NaCl{\rm{NaCl}}

    D

    Conc. Solution of alum

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    6.

    Washing soda has the formula

    A

    Na2CO3N{a_2}C{O_3}

    B

    Na2CO3.H2ON{a_2}C{O_3}.{H_2}O

    C

    Na2CO3.7H2ON{a_2}C{O_3}.7{H_2}O

    D

    Na2CO3.10H2ON{a_2}C{O_3}.10{H_2}O

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    9.

    Hypo is chemically:

    A

    Na2S2O3โ‹…2H2O{\rm{N}}{{\rm{a}}_2}{{\rm{S}}_2}{{\rm{O}}_3} \cdot 2{{\rm{H}}_2}{\rm{O}}

    B

    Na2S2O3.3H2O{\rm{N}}{{\rm{a}}_2}{{\rm{S}}_2}{{\rm{O}}_3}.3{{\rm{H}}_2}{\rm{O}}

    C

    Na2S2O3.4H2O{\rm{N}}{{\rm{a}}_2}{{\rm{S}}_2}{{\rm{O}}_3}.4{{\rm{H}}_2}{\rm{O}}

    D

    Na2S2O3.5H2O{\rm{N}}{{\rm{a}}_2}{{\rm{S}}_2}{{\rm{O}}_3}.5{{\rm{H}}_2}{\rm{O}}

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    10.

    When ammoniacal solution of common salt is saturated with carbon dioxide, we get:

    A

    NH4HCO3{\rm{N}}{{\rm{H}}_4}{\rm{HC}}{{\rm{O}}_3}

    B

    (NH4)2CO3{\left( {{\rm{N}}{{\rm{H}}_4}} \right)_2}{\rm{C}}{{\rm{O}}_3}

    C

    NaHCO3{\rm{NaHC}}{{\rm{O}}_3}

    D

    MgCO3{\rm{MgC}}{{\rm{O}}_3}

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