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 metal is pure conductor of electricity?

   A. Copper
   B. Gold
   C. Silver
   D. lead

   Submitted by: Wajahat Ali

7. The metal, which is a constituent of vitamin B12 is____________?

   A. Iron
   B. Magnesium
   C. Zinc
   D. Cobalt

   Submitted by: Malik Asghar Hussain

8. Which metal is non toxic in nature?

   A. Silver
   B. Iron
   C. Copper
   D. Gold

   Submitted by: Malik Asghar Hussain

9. Which metal known as quick silver ?

   A. Mercury 
   B. Sulphuric acid
   C. Chromite
   D. Quartz

   Submitted by: Mansoor Ahmed Suhag

10. Metal are highly ___________ ?

    A. Electropositive
    B. Electronegativity
    C. Both of these
    D. Neutral

    Submitted by: Tehniyat