Free Printable 10 acid bases and salt

1.

In terms of acidic strength, which one of the following is in the correct increasing order?

a)

(a) Water < Acetic acid < Hydrochloric acid

b)

(b) Water < Hydrochloric acid < Acetic acid

c)

(c) Acetic acid < Water < Hydrochloric acid

d)

(d) Hydrochloric acid < Water < Acetic acid

2.

What is formed when zinc reacts with sodium hydroxide?

a)

(a) Zinc hydroxide and sodium

b)

(b) Sodium zincate and hydrogen gas

c)

(c) Sodium zinc-oxide and hydrogen gas

d)

(d) Sodium zincate and water

3.

Tomato is a natural source of which acid?

a)

(a) Acetic acid

b)

(b) Citric acid

c)

(c) Tartaric acid

d)

(d) Oxalic acid

4.

Na2CO3 . 10H2O is

a)

(a) washing soda

b)

(b) baking soda

c)

(c) bleaching powder

d)

(d) tartaric acid

5.

At what temperature is gypsum heated to form Plaster of Paris?

a)

(a) 90°C

b)

(b) 100°C

c)

(c) 110°C

d)

(d) 120°C

6.

Sodium carbonate is a basic salt because it is a salt of a

a)

(a) strong acid and strong base

b)

(b) weak acid and weak base

c)

(c) strong acid and weak base

d)

(d) weak acid and strong base

7.

Alkalis are

a)

(a) acids, which are soluble in water

b)

(b) acids, which are insoluble in water

c)

(c) bases, which are insoluble in water

d)

(d) bases, which are soluble in water

8.

Lime water reacts with chlorine to give

a)

(a) bleaching powder

b)

(b) baking powder

c)

(c) baking soda

d)

(d) washing soda

9.

Nettle sting is a natural source of which acid?

a)

(a) Methanoic acid

b)

(b) Lactic acid

c)

(c) Citric acid

d)

(d) Tartaric acid

10.

What is the pH range of our body?

a)

(a) 7.0 – 7.8

b)

(b) 7.2 – 8.0

c)

(c) 7.0 – 8.4

d)

(d) 7.2 – 8.4

11.

Sodium hydroxide is a

a)

(a) weak base

b)

(b) weak acid

c)

(c) strong base

d)

(d) strong acid

12.

An aqueous solution turns red litmus solution blue. Excess addition of which of the following solution would reverse the change?

a)

(a) Baking powder

b)

(b) Lime

c)

(c) Ammonium hydroxide solution

d)

(d) Hydrochloric acid

13.

. Sodium hydroxide is used

a)

(a) as an antacid

b)

(b) in manufacture of soap

c)

(c) as a cleansing agent

d)

(d) in alkaline batteries

14.

Sodium hydroxide turns phenolphthalein solution

a)

(a) pink

b)

(b) yellow

c)

(c) colourless

d)

(d) orange

15.

HCl turns phenolphthalein solution

a)

(a) pink

b)

(b) yellow

c)

(c) colourless

d)

(d) orange

10 acid bases and salt

Total questions: 15

Worksheet time: 8mins

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