CHEMISTRY S BLOCK ELEMENTS MCQS 2nd YEAR download

2nd Year Chemistry S-Block Elements
MCQs
Chapter No. 2

Question No. 2 Fill in the Blanks.

(i) Alkali metals are ____________ reactive than alkaline-earth metals.

Answer:
More

(ii) Alkali metals decompose water vigorously producing ______ and hydrogen.

Answer:
Hydroxide

(iii) When heated in a current of dry hydrogen, alkaline earth metals form white crystalline _________ of the type MH2.

Answer:
Hydrides




(iv) The beryllium hydroxide, like the hydroxide of aluminum is amphoteric, while the hydroxides of the other members of the group IIA are_________.

Answer:
Basic

(v) The elements of the group IA are termed as alkali metals, because their are alkaline____________.

Answer:
Hydroxides , Oxides

(vi) Spodumene is an ore of______________metal.

Answer:
Lithium



(vii) Alkali metal nitrates on heating give the corresponding____________and oxygen (except Li).

Answer:
Nitrite



(viii) Na2CO3, H2O is the chemical formula of a mineral of sodium which is known as __________.

Answer:
Natron

(ix) Metallic bicarbonates are decomposed on heating into their carbonates, alongwith ____________and ______________.

Answer:
CO2,H2O

(x) Metal nitrates other than the alkali metals on heating decompose into the corresponding metal ___________ alongwith the evolution of nitrogen peroxide and oxygen.

Answer:
Oxides




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