Air contains volume of carbon dioxide approximately? - PakMcqs

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1. The Carbon Dioxide in the atmosphere, by volume, is_______?

   A. 0.039% B. 3.9% C. 13% D. 30%...

2. The carbon dioxide content in the air that we exhale is about?

   A. 4% B. 9% C. 15% D. 16% Submitted by: Malik Asghar Hussain...

3. The main culprit of greenhouse effect is Carbon dioxide. But which is the second element contributing most to greenhouse effect

   A. Nitrogen Dioxide (NO2) B. Chlorofluorocarbons (CFCs) C. Methane (CH4) D. High-fructose corn syrup (HFCs) Submitted by: Palestine...

4. Carbon dioxide was discovered by_______?

   A. Niels Bohr B. Amedeo Avogadro C. Joseph Black D. None of Above Submitted by: Ali Mallah...

5. Planets having largest amount of Carbon Dioxide is ____________?

   A. Mercury B. Jupiter C. Mars D. Venus Submitted by: Sinha Amjad...

6. The volume of Blood in a Human body to be approximately _________ of body weight?

   A. 6% B. 7% C. 8% D. 9% Submitted by: Ramiz Khan...

7. Air contains maximum amount of__________?

   A. oxygen B. nitrogen C. hydrogen D. carbon dioxide Submitted by: ABDUL HAYEE...

8. 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...

9. 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...

10. 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...