Safety Measures While Using Acids

Q. Baking soda when treated with acids, produces hydrogen gas that provides fluffiness to the cakes.

1. True
2. False

Q.

6useful uses of acids

Q.

Is ${\mathbf{H}}_{\mathbf{2}}{\mathbf{SO}}_{\mathbf{4}}$ an acid?

Q.

Question 1

The correct way of making a solution of acid in water is to
(a) add water to acid
(b) add acid to water
(c) mix acid and water simultaneously
(d) add water to acid in a shallow container

Q. Paper on reaction with concentrated ___ turns black and has a burnt look.

1. boric acid
2. lactic acid
3. conc. sulphuric acid
4. dil. hydrochloric acid

Q.

Which of the following is the major cause for discoloration of the Taj Mahal?

1. High Temperature

2. Acid rain

3. Evaporation

4. Greenhouse effect

Q. The powdery ash produced when a magnesium ribbon is burnt in the air, is mainly composed of .

1. magnesium oxide
2. magnesium hydride
3. magnesium nitride