Write a one-word answer for the following:

An apparatus used for the preparation of ozone

Q. Explain the following: An all glass apparatus is used in the laboratory preparation of nitric acid.

Q. Write the unit used for measuring ozone thickness.

Q. (i) Explain, why only all glass apparatus should be used for the preparation of nitric acid by heating concentrated sulphuric acid and potassium nitrate.
(ii) Write a chemical equation to illustrate the acidic nature of nitric acid.

Q. State whether the following statements are true or false:
A. Consistency test is used to determine the percentage of water required for preparing cement paste.
B. Vicat Apparatus is used for determining the consistency

Q.

The figure given below illustrates the apparatus used in the laboratory preparation of nitric acid.

(a) Name A (a liquid), B (a solid) and C (a liquid). (Do not give the formulae).

(b) Write an equation to show how nitric acid undergoes decomposition.

(c) Write the equation for the reaction in which copper is oxidized by concentrated nitric acid.