Chemistry Elements of Biological importance Test Online Mcqs Preparation

Chemistry Elements of Biological importance Test Online Mcqs Preparation With Answers Start Below

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Question 1 of 15

1. Sulphuric acid is king of chemicals, in its reactions it generally not act as

A. An acid

B. Oxidizing agent

C. A reducing agent

D. Dehydrating agent

Question 1 of 15

Question 2 of 15

2. In Antarctica, ozone depletion is due to the formation of compound

A. Formaldehyde

B. CFCs

C. NO and NO2

D. SO2 and SO3

Question 2 of 15

Question 3 of 15

3. Acid rain can be due to the absorption of:

A. Oxides of C

B. All of the above

C. Oxides of N

D. Oxides of S

Question 3 of 15

Question 4 of 15

4. Sulfuric acid is not prepared by dissolving SO₃ in water because:

A. It forms oleum instead of sulfuric acid

B. The reaction is too exothermic and difficult to control

C. None of the above

D. It doesn’t dissolve in water

Question 4 of 15

Question 5 of 15

5. Nitrates from fertilizers used on farmland can cause pollution. Why do nitrates pollute rivers:

A. Nitrates contains oxygen

B. Nitrate ions are negatively charged

C. Nitrates are very soluble in water

D. Nitrates are salts

Question 5 of 15

Question 6 of 15

6. Nitric acid is prepared commercially by:

A. Brikeland and Eyde’s process

B. Wurtz-Fitting synthesis

C. Contact process

D. Haber’s process

Question 6 of 15

Question 7 of 15

7. In Contact process for the manufacture of sulfuric acid, the most important reaction occurs in the catalyst chamber. Which set of the reactants and the catalyst are correct

A. Sulfur dioxide air and steam

B. Sulfur dioxide, air and V2O5

C. Sulfur, Oxygen and V2O5

D. Sulfur, air and Pt

Question 7 of 15

Question 8 of 15

8. In contact process SO₃ manufacturing is favour at low temperature but in actual practice the reaction is carried out at 400-600°C the reason is that:

A. Separation is easy at high temperature

B. Equilibrium will established later

C. Rate of forward reaction is low

D. At high temperature reaction will be fast

Question 8 of 15

Question 9 of 15

9. The manufacturing of nitrogenous fertilizer’s from ammonia is the result of:

A. Substitution Reaction

B. Addition Reaction

C. Decomposition reaction

D. Acid-base reaction

Question 9 of 15

Question 10 of 15

10. Maximum ammonia is used for the

A. Manufacturing of Nylon

B. Fertilizer itself

C. Explosive formation

D. Manufacturing of fertilizer

Question 10 of 15

Question 11 of 15

11. The steps involved in the manufacture of HNO₃:

A. Absorption of NO2 in H2O

B. All of the above

C. Combusting N2 with O2 to NO

D. Oxidation of NO to NO2 at 600°C

Question 11 of 15

Question 12 of 15

12. Which of the following occurs in Contact process:

A. Sulfur trioxide is dissolved in conc. Sulfuric acid

B. SO3 is dissolved in water

C. Sulfur trioxide is dissolved in dil. Sulfuric acid

D. SO2 is dissolved in water

Question 12 of 15

Question 13 of 15

13. The temperature at which nitrogen oxidized to NO during HNO₃ production is:

A. 2000°C

B. 1500°C

C. 1000°C

D. 3000°C

Question 13 of 15

Question 14 of 15

14. The catalyst V₂O₅ used in contact process is employed during:

A. Oxidizing SO2 to SO3

B. Absorbing sulfuric acid in water

C. None of the above

D. Burning molten sulfur with air

Question 14 of 15

Question 15 of 15

15. Which of the following is not primary pollutant?

A. H2SO4

B. NO

C. CO

D. SO3

Question 15 of 15

Chemistry Elements of Biological importance Test Online Mcqs Preparation

Chemistry Elements of Biological importance Test Online Mcqs Preparation With Answers Start Below

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