Chemistry Online MCQs Test 03 For Preparation

1. Rain water is acidic in nature because air contain ?

A. Carbon dioxide

B. Oxygen

C. All of these

D. Nitrogen

2. The chemical formula of magnetic oxide is ?

A. Fe2O3.H2O

B. Fe3O4

C. Fe2O3

D. FeO

3. Nutrient pollution of water bodies is caused by ?

0

4. The blister copper is refined by ?

A. Boiling

B. Concentration

C. Reduction

D. Electrolysis

5. Chemical formula of Urea is ?

A. NH2COONH4

B. NH2CONH2

C. Na2CO3

D. NH4CL

6. Chlorine act as a bleaching agent in the presence of ?

A. HCL

B. H2O

C. NaOH

D. HNO3

7. Dielectric constant of water at 18 °C is ?

A. 84

B. 80

C. 75

D. 70

8. Most of the aquatic animals cannot survive above ?

A. 30 °C

B. 35 °C

C. 44 °C

D. 50 °C

9. Sodium carbonate is commercially manufactured by ?

A. Haber’s Process

B. Ostwald’s Process

C. Solvay Process

D. Frisch Process

10. Water gas is a mixture of ?

A. None of these

B. Hydrogen & Oxygen

C. Steam & Air

D. CO & H2

11. The reason of unusual physical properties of water is due to the presence of ?

A. None of these

B. Covalent bond

C. Coordinate cov. Bond

D. Hydrogen bonding

12. The latent heat of fusion of water is ?

A. 6 KJ/Mol

B. 4.2 KJ/Mol

C. 5.7 KJ/Mol

D. 5.2 KJ/Mol

13. The density of water is one gram per centimeter cube at ?

A. 4 °C

B. 0 °C

C. 100 °C

D. 60 °C

14. The enormous quantity of water present on earth surface acts as giant thermostat due to its high ?

A. Latent heat values

B. Boiling Point

C. Heat Capacity

D. Density

15. Which one of the following disease is caused by mercury ?

A. Typhoid

B. Cholera

C. Parkinson

D. Hepatitis

Chemistry Online MCQs Test 03 For Preparation

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