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Acid , Bases and Salts

Total questions: 25

Worksheet time: 25mins

Name
Class
Date
1.

Which of the following is the correct classification of Dolomite?

a)

  1. An acid salt

b)

  1. A mixed salt

c)

A normal salt

d)

  1. A double salt

2.

Which of these gases are responsible for ACID RAIN. (Choose all the possible answers)

a)

CARBON DIOXIDE

b)

SULPHUR DIOXIDE

c)

NITROGEN DIOXIDE

d)

DIOXIDE

3.

Chemical reaction between an acid and a base is known as a (a)   reaction.

4.

Neutral salts do not change the color of the litmus paper. (True/False)

a)

True

b)

False

5.

An acid converts blue litmus into (a)   .

6.

Orange has?

a)

Oxalic acid

b)

Lactic acid

c)

Citric acid

d)

None of the above

7.

HCl is found in household products, including some toilet bowl cleaners. Is HCl an acid or a base?

a)

Acid

b)

Base

c)

Neither (Neutral)

8.

The term acid has been derived from the Latin word _____ which means sour.

a)

base

b)

salt

c)

acidus

d)

acetate

9.

Common salt formula is

a)

NaOh

b)

NaCl

c)

H2So4

d)

NaHco3

10.

What happens when soap is rubbed on a turmeric stain on a shirt?

a)

It turns RED.

b)

It remains YELLOW.

c)

It turns MAGENTA.

d)

It turns PINK.

11.

Litmus is obtained from _____

a)

lichens

b)

purple color

c)

red color

d)

blue color

12.

Juice of Hibiscus turns green when added to a

a)

ACID

b)

BASE

13.

Acids dissolve in water 'Releases' ?

a)

H+ ions

b)

Oh- ions

c)

H + H20--> H3O

d)

None of the above

14.

Acid present in gooseberries is

a)

Oxalic acid

b)

Citric acid

c)

Tartaric acid

d)

lactic acid

15.

While diluting acid, acid should be added to water dropwise with continues stirring.

a)

True

b)

False

16.

Is this a neutralization reaction?

NaOH + HCL →\rightarrow  NaCl + H2O

a)

YES

b)

NO

17.
According to the pH range which substance is more acidic than lemon juice
a)
Hydrochloric acid
b)
cabbage
c)
milk
18.

True or false: a neutral solution has equal amounts of H+ and OH-.

a)

True

b)

False

19.

Acid + metal carbonate gives?

a)

Salt + H2 + Co2

b)

Salt + H20+ O2

c)

Salt + H20 + Co2

d)

Salt + Co3

20.

Is pure water acidic, basic, or neutral?

a)

Acidic

b)

Basic

c)

Neutral

21.

Sodium hydroxide ph is?

a)

7

b)

5.5

c)

13

d)

14

22.

Which of the following is not an amphiprotic species?

a)

  1. HCO3–

b)

  1. HPO42-

c)

  1. OH–

d)

  1. H2PO42-

23.

Which of the following can be considered as an example of olfactory indicators?

a)

  1. Onion

b)

  1. Methyl orange

c)

  1. Turmeric

d)

  1. China rose

24.

The pH of 0.1 M solution of the following salts increases in the order

a)

  1. NaCl<NH4Cl<NaCN<HCl

b)

  1. HCl< NH4Cl<NaCl<NaCN

c)

  1. NaCN<NH4Cl<NaCl<HCl

d)

  1. HCl<NaCl<NaCN<NH4Cl

25.

Which of the following is not a use of Bleaching powder?

a)

  1. Bleaching agent


b)

  1. Oxidising agent


c)

  1. Used in soda-acid fire extinguishers.


d)

  1. Disinfectant

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