Inhaled air passes through which of the following in the last? - PakMcqs

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1. 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...

2. One of the countries through which equator passes is___________?

   A. Kenya B. Malaysia C. Malta D. Pakistan...

3. Equator passes through one of these countries___________?

   A. Saudi Arabia B. Italy C. Japan D. None...

4. International date line passes through which strait?

   A. Malacca Strait B. Adam Strait C. Bering Strait D. Java Strait Submitted by: Tahira...

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. Which of the following does not pollute the air?

   A. Nitrogen Dioxide B. Sulfur dioxide C. Carbon dioxide D. none of these Submitted by: Nazakat Baloch...

8. Which of the following noble gases is abundant in air?

   A. Neon B. Helium C. Argon D. Methane Submitted by: Malik Asghar Hussain...

9. When sound waves travel from air to water which of the following quantities remains unchanged?

   A. Speed B. Frequency C. Intensity D. Wavelength Submitted by: Rashid Mehmood...

10. It is observed that the total pressure exerted by air on the man of average size is around 14.7 lb wt. per square inch. But the man feels quite comfortable,. It is because of__________?

    A. An equal and opposite pressure acts from inside B. of the height of a man C. of gravity D. Earth pulls the man upward E. None of these Submitted by: Zeeshan Rafique Soomro...