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Class XI Chemistry S Block 2
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Question 1
Be2C + H2O → BeO + X
CaC2 + H2O → Ca(OH)2 + Y; then X and Y are respectively
CaC2 + H2O → Ca(OH)2 + Y; then X and Y are respectively
Question 2
On heating in air, sodium burns violently with golden yellow flame forming -
Question 3
Calcium hydroxide is -
Question 4
Y CaSO4.2H2O X. X and Y are respectively
Question 5
The compound sprinkled on road to keep them wet and prevent dust from flying is -
Question 6
The charge/size ratio of a cation determines its polarizing power. Which one of the following sequences represents the increasing order of the polarizing power of the cationic species, K+, Ca2+, Mg2+, Be2+?
Question 7
Sodium carbonate is prepared by
Question 8
An inorganic compound (1) made of two most occurring elements in the earth’s crust and used in building construction when made to react with carbon, forms a most stable diatomic poisonous gas (2). Compounds (1) and (2) are:
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Oct 9NEET & AIIMS