Engineering Chemistry II Mock Test 8

10%

Question 1 of 10

1. Rate of corrosion of anodic region is inversely proportional to the ___________

Anodic area

Cathodic area

Sum of anodic area and cathodic area

Product of anodic area and cathodic area

Question 1 of 10

Question 2 of 10

2. Which of the following is the least noble metal?

Brass

Aluminium

Magnesium

Nickel

Question 2 of 10

Question 3 of 10

3. Which of the following is an example of an inactive atmospheric suspended particle?

AlCl₃

NaCl

(NH₄)₂ SO₄

Charcoal

Question 3 of 10

Question 4 of 10

4. The specific volume ratios of W, Cr and Ni are 3.6, 2.0 and 1.6 respectively. Which of them will have the least rate of corrosion?

All will have the same rate of corrosion

Question 4 of 10

Question 5 of 10

5. The residual product discharged by the hydrogen-oxygen cell is ____________

Water

Alcohol

Potassium permanganate

Hydrogen peroxide

Question 5 of 10

Question 6 of 10

6. The standard emf of the hydrogen-oxygen fuel cell is ____________

1.23 V

3.96 V

2.54 V

0.58 V

Question 6 of 10

Question 7 of 10

7. Which of the following factor does not contribute to the rusting of iron?

Contact with less reactive metal

Contact with more reactive metal

Presence of acids and electrolytes

Presence of water and oxygen

Question 7 of 10

Question 8 of 10

8. Which of the following is not an example of a fuel cell?

Hydrogen-oxygen cell

Methyl-oxygen-alcohol cell

Propane-oxygen cell

Hexanone-oxygen cell

Question 8 of 10

Question 9 of 10

9. According to Faraday’s second law, the weights of different substances evolved by the passage of the same quantity of electricity are proportional to their _______________

Volume

Chemical equivalent weight

Current supply

Chemical equivalent density

Question 9 of 10

Question 10 of 10

10. Arrange the following in the ascending order of their degree of corrosion.

Zinc >> Magnesium >> Lead >> Copper >> Aluminium

Zinc >> Magnesium >> Copper >> Lead >> Aluminium

Copper >> Lead >> Aluminium >> Zinc >> Magnesium

Copper >> Aluminium >> Zinc >> Lead >> Magnesium

Question 10 of 10