Question Detail

Atomic number is equal to

Number of electrons
Number of nutron
Number of protons
Total number of protons and neutrons

Answer: Option C

Similar Questions :

1. Which of the following is produced during the formation of photochemical smog ?

Nitrogen Oxides
Hydrocarbons
Methane
Ozone

Answer: Option D

2. Permanent hardness of water is due to the presence of ?

Magnesium bicarbonate
Calcium bicarbonate
Sodium bicarbonate
Calcium sulphate

Answer: Option D

3. What is the chemical name of table salt ?

Sodium nitrate
Ammonium chloride
Sodium chloride
Calcium chloride

Answer: Option C

4. Water drops are spherical because of ?

viscosity
density
polarity
surface tension

Answer: Option D

5. Which gas is used in fire extinguishers ?

Carbon dioxide
Nitrogen oxide
Carbon monoxide
Sulpher dioxide

Answer: Option A

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