Which of the following does not participate in the Solvay’s process for the manufacture of Na₂CO₃?

(A) NH₃                                                             (B) NaCl solution
(C) CO₂                                                             (D) H₂SO₄

In the Castner’s process of extraction of sodium, cathode is

Aqueous sodium hydroxide reacts with white phosphorous to form phosphine and

(A) NaH₂PO₂                                                      (B) P₂O₅
(C) Na₃PO₃                                                        (D) P₂O₃

One of the elements present in carnalite shows flame colouration. The colour of the flame is

Sodium is heated in air at 300^oC to form X. X absorbs CO₂ and forms Na₂CO₃ and Y. Which of the following is Y?

(A) H₂                          (B) O₂                           (C) H₂O₂                                (D) O₃

Which of the following alkali metal hydroxides is the strongest base ?

The alkali metal that reacts with nitrogen directly to form nitride is

Sodium chloride imparts golden yellow colour to the Bunsen flame. This can be interpreted due to

Mortar is a mixture of

(A) plaster of paris + silica                                 (B) slaked lime + plaster of pair + H₂O
(C) CaCO₃ + silica + H₂O                                    (D) slaked lime + silica + H₂O

A burning strip of magnesium is introduced into a jar containing a gas. After some time the walls of the container is coated with carbon. The gas in the container is  

(A) O₂                                   (B) N₂                            (C) CO₂                                  (D) H₂O

What are the products formed when an aqueous solution of magnesium bicarbonate is boiled

(A) MgCO₃, H₂O, CO₂                                         (B) Mg(HCO₃)₂, H₂O
(C) Mg(OH)₂, H₂O                                               (D) Mg, CO₂, H₂O

In the hardening stage of plaster of paris, the compound formed is        

(A) CaSO₄                                                                 (B) CaSO₄ H₂O
(C) orthorhombic CaSO₄ 2H₂O                            (D) Monoclinic CaSO₄ 2H₂O

Which of the following is correct ?

Nitrolim is

(A) CaCN₂ + C                                                  (B) Ca(CN)₂ + C
(C) CaC₂ + C                                                     (D) all

Chemical A is used for water softening to remove temporary hardness. A reacts with sodium carbonate to generate caustic soda. When carbon dioxide is bubbled through A, it turns cloudy. What is the chemical formula of A?                                                                       

(A) CaCO₃                                                          (B) CaO
(C) Ca(OH)₂                                                       (D) Ca(HCO₃)₂

Mixture of MgCl₂ and MgO is called