Main constituent in air is ___________?

Related Mcqs:

1. The main constituent of hemoglobin is___________?

   A. Chlorine B. Iron C. Calcium D. None of these...

2. The main Constituent of Biogas is__________?

   A. Methane  B. Hydrogyn C. Oxygen D. Carbin dioxide Submitted by: Farhan Rana...

3. The main constituent of Pearls are: ______________?

   A. Calcium oxide &Ammonium Chloride B. Calcium Carbonate &Megnesium Carbonate C. Aragonite & Conchiolin D. None of these Submitted by: Fahad Mehsud...

4. The main cause of air pollution is __________?

   A. Burning Of Fuels B. Forests C. Fertilizers D. None of these Submitted by: Rafi Umar...

5. Quantity of fresh air required for a man is 1000 cubic feet of air for every____________?

   A. 5 minutes B. 10 minutes C. 15 minutes D. 20 minutes Submitted by: WIQAR AHMAD...

6. During which process of energy exchange does cold air displace warmer air?

   A. Convection  B.  Radiation C.  Conduction D.  None of these Submitted by: Rida...

7. Brass gets discoloured in air because of the presence of which of the following gases in air ________ ?

   A. Carbon dioxide B. Oxygen C. Nitrogen D. Hydrogen sulphide Submitted by: Rashid Mehmood...

8. Main use of salt in diet is to : ___________?

   A. ease the process of cooking B. increase the taste C. produce small amount of hydrochloric acid required for digestion D. inclease solubility of food particles in water Submitted by: Abid Hussain...

9. The main factor for determining a region’s climate is ___________?

   A. Latitude B. Temperature C. Longitude D. None of them Submitted by: Ahmed Khan jamali...

10. Air Conditioning Controls:___________?

    A. Circulation of the Air B. Humidity C. Temperature D. All of The Above Submitted by: Muhammad Ullah...