Rusting of Iron involves_______________?

Related Mcqs:

1. In winter an iron pipe feel colder than a wooden window . This is because wood is_______?

   A. Conductor
   B. Non-Conductor
   C. Semi- Conductor
   D. Not a solid while iron is a solid
   E. None of these

2. In order to prevent the corrosion of iron pipes they are often coated with a layer of zinc. This process is termed as____________?

   A. Electroplating
   B. Annealing
   C. Galvanization
   D. Vulcanization

3. Galvanised Iron sheets have a coating of____________

   A. Tin
   B. Silver
   C. Zinc
   D. Chromium

   Submitted by: WIQAR AHMAD

4. Which of the following is caused by a deficiency of iron in the diet?

   A. Giotre
   B. Scurvy
   C. Anaemia
   D. Rickets

   Submitted by: ABDUL HAYEE

5. Pig iron is also called________?

   A. Cast iron
   B. Steel
   C. Wrought iron
   D. Stainless steel

   Submitted by: Muhammad Ali Kunbhar

6. Symbol of Iron is__________?

   A. Na
   B. Fr
   C. Fe
   D. Zn

   Submitted by: Ali Mallah

7. For glavinizing of iron which of the following metals is used ?

   A. Aluminimum
   B. Copper
   C. Zinc
   D. Lead

   Submitted by: Farhan Rana

8. Why the needle of iron swims on water surface when it is kept gently ?

   A. It will remain under the water, when it will displace more water than its weight
   B. the density of needle is less than that of water
   C. due to surface tension
   D. due to its shape

   Submitted by: Abid Hussain

9. Current stage of star ‘Sun’ is___________?

   A. white dwarf
   B. red giant
   C. yellow dwarf
   D. orange dwarf

   Submitted by: ★ ɪʟʏᴀsɪʟᴜ ★

10. What is the Molecular Formula for Glucose _______ ?

    A. C4H10O6
    B. C5H11O6
    C. C6H12O6
    D. S6H12O6

    Submitted by: Rashid Mehmood