Which metal pollute the air of a big city?

Related Mcqs:

1. 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...

2. Which metal is called “metal of hope”?

   A. Uranium B. Titanium C. Gold D. Platinum Submitted by: Mir Turab Ali...

3. 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...

4. 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...

5. 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...

6. Which is the heaviest metal?

   A. Iron B. Mercury C. Nickel D. Osmium Submitted by: ABDUL HAYEE...

7. The second most abundant metal found in the earth’s crust is_____________?

   A. Silicon B. Aluminium C. Calcium D. Sodium Submitted by: Ashfaque Ali Khoso...

8. lightest metal is__________?

   A. Lithium B. Sodium C. Magnesium D. Aluminium Submitted by: Junaid Amjad...

9. The metal that is used as a catalyst in the hydrogenation of oils is _______?

   A. Ni B. Pb C. Cu D. Pt Submitted by: Malik Asghar Hussain...

10. Which metal known as quick silver ?

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