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Chemistry Mixed Test - 2

Description: Chemistry Mix Test - 2
Number of Questions: 15
Created by:
Tags: Chemistry Mix Test - 2 Acids, Bases and Salts Chemistry Periodic Classification of Elements
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Which of the following is used for preparing TNT and dynamite?

  1. Sulphuric acid

  2. Hydrochloric acid

  3. Nitric acid

  4. Sodium hydroxide


Correct Option: C
Explanation:

It is used in the manufacture of explosives like, TNT and dynamite.

What is the taste of ammonium hydroxide?

  1. Sweet

  2. Sour

  3. Bitter

  4. Tasteless


Correct Option: C
Explanation:

Ammonium hydroxide is a base.The taste of a base is bitter.

Pick out the odd one from the given options.

  1. amoeba

  2. euglena

  3. bacteria

  4. yeast


Correct Option: C
Explanation:

It is a multicellular organism.

Litmus paper test for acidic nature is turning of _______.

  1. red litmus to blue

  2. blue litmus to red

  3. red litmus to white

  4. blue litmus to black


Correct Option: B
Explanation:

Dip a wet piece of blue litmus paper in the solution. Blue litmus turns to red, this shows the acidic nature of the given solution.

A compound containing one or more replaceable hydrogen atoms is called ____.

  1. acid

  2. base

  3. neutral

  4. oxide


Correct Option: A
Explanation:

A compound which contains one or more replacable hydrogen atoms is called acid.

Which of the following is known as baking soda?

  1. Sodium carbonate

  2. Sodium chloride

  3. Calcium carbonate

  4. Sodium bicarbonate


Correct Option: D
Explanation:

It is known as baking soda.

Which of the following is used as a fungicide?

  1. Potash alum

  2. Copper sulphate

  3. Potassium nitrate

  4. Calcium carbonate


Correct Option: B
Explanation:

It is used as a fungicide.

The main constituents of atmospheric gas are ____________.

  1. nitrogen and carbon dioxide

  2. nitrogen and argon

  3. nitrogen and oxygen

  4. nitrogen and helium


Correct Option: C
Explanation:

Nitrogen is 78% and oxygen is 21% (apprx).

Which of the following gases is called laughing gas?

  1. Nitrous oxide

  2. Sodium chloride

  3. Sodium carbonate

  4. Sodium bicarbonate


Correct Option: A
Explanation:

This is called nitrous oxide, which is used as an anesthetic. This disease is caused by polluted air so it is not an epidemic disease.�

Why sodium is kept immersed in kerosene oil?

  1. Kerosene

  2. Water

  3. Cold pot (freezer)

  4. H2SO4


Correct Option: A
Explanation:

Sodium is highly active element and it reacts with moist air immeditely, so it is preserved in Kerosene.

Water (hot/cold) does not react with ____________.

  1. sodium

  2. calcium

  3. potassium

  4. barium


Correct Option: D
Explanation:

Water does not react with barium. Water does not react with barium.

Which of the following is not a base (alkali)?

  1. Solution of ammonia

  2. Sodium hydroxide

  3. Potassium hydroxide

  4. Sulphuric acid


Correct Option: D
Explanation:

It is an acid, not a base.

When acid reacts with base, it gives ______.

  1. salt and salt

  2. salt and water

  3. acid and water

  4. water and metal


Correct Option: B
Explanation:

Acids reacts with bases and basic oxides and produce salt and water.

What is the molecular formula of quick lime?

  1. CaO

  2. CO2

  3. SO2

  4. H2SO4


Correct Option: A
Explanation:

CaO (calcium Oxide) is called quick lime. 

Hard water can be softened by the addtion of a compound called calgon. Chemical Name of Calgon is ______.

  1. Sodium Aluminium Silicate

  2. Sodium Hexameta Phosphate

  3. Calcium Aluminium Silicate

  4. Magnesium Permutit


Correct Option: B
Explanation:

This is the chemical name of Calgon.

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