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    CBSE

    Subject

    Chemistry
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    NEET Chemistry : The p-Block Elements

    Multiple Choice Questions

    171.

    Difference in atomic radius is maximum for

    • Rb-Cs

    • K-Rb

    • Na-K

    • Li-Na

    Answer
    • 172.

    Which oxide of nitrogen is coloured gas ?

    • N2O

    • NO2

    • N2O5

    • NO

    Answer
    • 173.

    Ostwald process is used for the manufacture of :

    • nitric acid

    • sulphuric acid

    • ammonia

    • bleaching powder

    Answer
    • 174.

    Which will not form precipitation after addition of (NH4)2CO3 in presence of NH4Cl?

    • Mg

    • Ba

    • Sn

    • Sr

    Answer
    • 175.

    Which of the following inert gas liquifies easily ?

    • He

    • Kr

    • Ne

    • Ar

    Answer
    • 176.

    Which is correct order of solubility in water?

    • Ba(OH)2 <Mg(OH)2

    • BaCO3> CaCO3

    • CaSO4 <MgSO4

    • Ca(OH)2≃Mg(OH)2

    Answer
    • 177.

    HCl is a gas but HF is a low boiling liquid .This is because :

    • H-F bond is strong

    • H-F bond is weak

    • molecules aggregate because of hydrogen bonding

    • HF is a weak acid

    Answer
    • 178.

    The chemical used for cooling in refrigerators is :

    • CO2

    • NH4OH

    • NH4Cl

    • liquid NH3

    Answer
    • 179.

    The substance used in smoke screen is :

    • sodium chloride

    • sodium phosphate

    • calcium fluoride

    • calcium phosphide

    Answer
    • 180.

    Which of the following is the correct statement for PH3?

    • It is less poisonous than NH3.

    • It is less basic than NH3.

    • Electronegativity of PH3 >NH3.

    • It does not show reducing properties.

    Answer
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