Chemistry Online MCQs Test 03 For Preparation

1. Chemical formula of Urea is ?

A. NH4CL

B. NH2CONH2

C. Na2CO3

D. NH2COONH4

2. The latent heat of fusion of water is ?

A. 5.7 KJ/Mol

B. 4.2 KJ/Mol

C. 5.2 KJ/Mol

D. 6 KJ/Mol

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

A. Hydrogen bonding

B. None of these

C. Covalent bond

D. Coordinate cov. Bond

4. Sodium carbonate is commercially manufactured by ?

A. Ostwald’s Process

B. Haber’s Process

C. Frisch Process

D. Solvay Process

5. The blister copper is refined by ?

A. Boiling

B. Concentration

C. Electrolysis

D. Reduction

6. Most of the aquatic animals cannot survive above ?

A. 30 °C

B. 35 °C

C. 50 °C

D. 44 °C

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

A. 4 °C

B. 60 °C

C. 100 °C

D. 0 °C

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

A. HNO3

B. NaOH

C. H2O

D. HCL

9. The chemical formula of magnetic oxide is ?

A. Fe3O4

B. Fe2O3

C. Fe2O3.H2O

D. FeO

10. Nutrient pollution of water bodies is caused by ?

0

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

A. Carbon dioxide

B. Oxygen

C. All of these

D. Nitrogen

12. Water gas is a mixture of ?

A. None of these

B. Steam & Air

C. CO & H2

D. Hydrogen & Oxygen

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

A. 80

B. 70

C. 84

D. 75

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

A. Typhoid

B. Hepatitis

C. Cholera

D. Parkinson

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

A. Latent heat values

B. Density

C. Boiling Point

D. Heat Capacity

Chemistry Online MCQs Test 03 For Preparation

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