2nd Year Chemistry S-Block Elements
MCQs Chapter No. 2 Solved Exercise
Q. No.2 Indicate True or False.
(i) Group IA elements are called alkali metals because their chlorides are alkaline in nature.
Answer:
False
(ii) Alkali metals are very good conductor of electricity.
Answer:
True
(iii) The hydroxides of alkali metals and alkaline-earth metals are soluble in water,
Answer:
True
(iv) Plaster of Paris is a hernihydrate.
Answer:
True
(v) Alkali metals have low melting and boiling points as compared to those of alkaline-earth metals.
Answer:
True
(vi) Lithium carbonate is decomposed to its oxide. but the carbonates of the other alkali metals are stable towards heat,
Answer:
True
(vii) All alkali metal sulphates are insoluble in water.
Answer:
False
(viii) Lithium combines with nitrogen to form lithium nitride but other alkali metals do not react with nitrogen.
Answer:
True
(ix) Trona is a mineral of lithium.
Answer:
False
(x) Alkaline-earth metals are stronger reducing agents than alkali metals.
Answer:
False
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