Chemistry
Pick the odd member from the list giving reasons:
(a) Ammonia, sulphur dioxide, hydrogen chloride, carbon dioxide.
(b) Copper oxide, aluminium oxide, sodium oxide, magnesium oxide.
Ammonia
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Answer
(a) Ammonia is basic in nature and rest are acidic.
(b) Copper oxide is less reactive and can be reduced by C, CO or hydrogen whereas aluminium oxide, sodium oxide, magnesium oxide are reduced by electrolysis.
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Related Questions
Choose the correct from the following:
Ammonia can be obtained by adding water to
A : Ammonium chloride.
B : Ammonium nitrite.
C : Magnesium nitride.
D : Magnesium nitrate
(a) Is ammonia more dense or less dense than air?
(b) What property of ammonia is demonstrated by the Fountain Experiment?
(c) Write the balanced equation for the reaction between ammonia and sulphuric acid.
Give reasons for the following —
(a) Liquid ammonia is used as a refrigerant in ice plants.
(b) Aqueous solution of ammonia is used for removing grease stains from woollen clothes.
(c) Aqueous solution of ammonia gives a pungent smell.
(d) Aqueous solution of ammonia conducts electricity.
A gas 'P' gives dense white fumes with chlorine. It's aqueous solution gives a blue colour with copper (II) hydroxide. Give the name and formula of the gas P.