CBSE 12th Standard Chemistry Subject The p-Block Elements HOT Questions MCQ Questions 2021
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CBSE 12th Standard Chemistry Subject The p-Block Elements HOT Questions MCQ Questions 2021
12th Standard CBSE
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Reg.No. :
Chemistry
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An inorganic salt (A) is decomposed on heating to give two products (B) and (C). Compound (C) is a liquid at room temperature and is neutral to litmus while compound (B) is a colourless neutral gas. Compounds (A), (B) and (C) are
(a)NH4NO3, N2O,H2O
(b)NH4NO2,NO,H2O
(c)CaO, HO, CaCI 2O, CaCI2
(d)Ba(NO3)2, H2O, NO2
(e)Mg(NO3)2, N2O5, H2O
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With excess of CI2, ammonia forms
(a)nitrogen
(b)nitrosyl chloride
(c)ammonium chloride
(d)nitrogen trichloride
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The gases produced in the reaction, Pb(NO3)2 \(\overset{\triangle}{\longrightarrow}\) and NH4NO3 \(\overset{\triangle}{\longrightarrow}\) are respectively
(a)N2O, NO
(b)N2O, NO2
(c)NO, NO2
(d)NO2,N2O
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The reddish brown coloured gas formed when nitric oxide is oxidised by air is
(a)N2O5
(b)N2O4
(c)NO2
(d)N2O3
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Which statement is wrong for NO?
(a)It is anhydride of nitrous acid
(b)Its dipole moment is 0.22 D
(c)It forms dimer
(d)It is paramagnetic
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CBSE 12th Standard Chemistry Subject The p-Block Elements HOT Questions MCQ Questions 2021 Answer Keys
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(a)
NH4NO3, N2O,H2O
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(d)
nitrogen trichloride
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(d)
NO2,N2O
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(c)
NO2
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(a)
It is anhydride of nitrous acid
