Time Left - 30:00 mins

Class XI Chemistry S Block 2

Attempt now to get your rank among 1717 students!

Question 1

Be2C + H2O → BeO + X
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:
  • 1717 attempts
  • 11 upvotes
  • 55 comments

Tags :

Oct 9NEET & AIIMS
GradeStack Learning Pvt. Ltd.Windsor IT Park, Tower - A, 2nd Floor, Sector 125, Noida, Uttar Pradesh 201303 bepstudentsupport@byjus.com