HARD
NDA & NA EE
IMPORTANT
Earn 100

The chemical used as a fixer/developer in photography is:

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Important Questions on Some Important Chemical Compounds

EASY
NDA & NA EE
IMPORTANT
Pathfinder NDA / NA National Defence Academy and Naval Academy Entrance Examination Chemistry>Chapter 11 - Some Important Chemical Compounds>Practice Exercise>Q 131
Washing soda is the common name for-
EASY
NDA & NA EE
IMPORTANT
Pathfinder NDA / NA National Defence Academy and Naval Academy Entrance Examination Chemistry>Chapter 11 - Some Important Chemical Compounds>Practice Exercise>Q 132
Which one among the following is used in making gunpowder?
EASY
NDA & NA EE
IMPORTANT
Pathfinder NDA / NA National Defence Academy and Naval Academy Entrance Examination Chemistry>Chapter 11 - Some Important Chemical Compounds>Practice Exercise>Q 133
The cleansing action of soap and detergent in water is due to the formation of:
MEDIUM
NDA & NA EE
IMPORTANT
Pathfinder NDA / NA National Defence Academy and Naval Academy Entrance Examination Chemistry>Chapter 11 - Some Important Chemical Compounds>Practice Exercise>Q 134

Addition of gypsum to cement:

MEDIUM
NDA & NA EE
IMPORTANT
Pathfinder NDA / NA National Defence Academy and Naval Academy Entrance Examination Chemistry>Chapter 11 - Some Important Chemical Compounds>Practice Exercise>Q 135

Which one of the following are the characteristics of organic farming?

1. Use of chemical fertilizers to improve soil fertility.

2. Frequent decomposing and fallowing.

3. Use of herbs to control pests.

4. Higher productivity per hectare.

Select the correct answer using the codes given below:

MEDIUM
NDA & NA EE
IMPORTANT
Pathfinder NDA / NA National Defence Academy and Naval Academy Entrance Examination Chemistry>Chapter 11 - Some Important Chemical Compounds>Practice Exercise>Q 136
The phosphorus used in the manufacture of safety matches is:
MEDIUM
NDA & NA EE
IMPORTANT
Pathfinder NDA / NA National Defence Academy and Naval Academy Entrance Examination Chemistry>Chapter 11 - Some Important Chemical Compounds>Practice Exercise>Q 137
Soap is the sodium or potassium salt of-