Test Your Knowledge - Free MCQ PRACTICE
by Saksham Chaudhry : Paschim Vihar, New Delhi 110063 T: 1142316457, 9810570740
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A fresh set of 20 random questions is generated every time you open this page and every time you refresh it.
For each of the following multiple choice questions, choose the most appropriate answer :

1. The human body contains the maximum amount of
A. Protein 
B. Water 
C. Fats 
D. Plasma 

2. The substance present in abundant amounts in sea water is
A. Potassium chloride 
B. Common salt 
C. Sand 
D. Calcium carbonate 

3. It is not advisable to sleep under a tree at night because trees release
A. Carbon dioxide 
B. Oxygen 
C. Carbon monoxide 
D. Sulphur dioxide 

4. The metallic constituents of hard water are :
A. Iron, tin and calcium 
B. Calcium, magnesium and iron 
C. Magnesium, tin and iron 
D. Magnesium, calcium and tin 

5. Commercially, the production of ammonia is important because it is used in the
A. Preparation of soaps 
B. Manufacture of artificial foods 
C. Manufacture of proteins by polymerization 
D. Production of fertilizers 

6. In order to increase the volume of a gas by 10%, the pressure of the gas should be
A. Decreased by 10 % 
B. Decreased by 1 % 
C. Increased by 1 % 
D. Increased by 10 % 

7. Polythene is industrially prepared by the polymerization of
A. Methane 
B. Acetylene 
C. Ethylene 
D. Ethane 

8. The IUPAC name for tertiary butyl iodide is
A. 1-Iodo, 3-methyl propane 
B. 2-Iodobutane 
C. 2-Iodo 2·methyl propane 
D. 4-Iodobutane 

9. Benzene reacts with chlorine in sunlight to give a final product
A. C6H5Cl 
B. C6Cl6 
C. C6H6Cl6 
D. CCl4 

10. Which of the following is an intensive property?
A. Temperature 
B. Surface tension 
C. Viscosity 
D. All of these 

11. The correct decreasing order of dipole moment in CH3CI, CH3Br and CH3F is
A. CH3F > CH3Br > CH3CI 
B. CH3CI> CH3F > CH3Br 
C. CH3F > CH3CI > CH3Br 
D. CH3CI> CH3Br > CH3F 

12. For respiration, deep-sea divers use a mixture of
A. Oxygen and helium 
B. Oxygen and carbon dioxide 
C. Hydrogen and oxygen 
D. Oxygen and nitrogen 

13. In the industrial production of vegetable ghee, the process involved is
A. Dissociation 
B. Reduction 
C. Oxidation 
D. Ionisation 

14. Chlorination' is
A. Adding small amounts of chlorine to contaminated water 
B. The formation of a salt containing chlorine 
C. A process of converting chlorides into chlorine 
D. A chemical reaction in which chlorine is formed 

15. The gas B turns potassium dichromate acidified with dilute H2SO4 to a green coloured solution C. A, B and C are respectively
A. Na2S2O3, SO2, Cr2 (SO4)3 
B. Na2SO4, SO2, Cr2 (SO4)3 
C. Na2SO3, SO2, Cr2 (SO4)3 
D. Na2S, SO, Cr2 (SO4)3 

16. Which metal has a greater tendency to form metal oxide?
A. Ca 
B. Fe 
C. Cr 
D. Al 

17. The van't Hoff factor I for a compound which undergoes dissociation in one solvent and association in other solvent is respectively
A. Less than one and greater than one 
B. Less than one and less than one 
C. Greater than one and greater than one 
D. Greater than one and less than one 

18. The pH value of 12 is of an aqueous solution of
A. Sodium hydroxide 
B. Ammonium sulphate 
C. Sodium chloride 
D. Hydrogen chloride 

19. The compound that does not form a clear solution with cold water is
A. Benzoic acid 
B. Sugar 
C. Baking powder 
D. Caustic soda 

20. An oxidizing agent is a substance
A. Loses an electron in a redox chemical action 
B. Substitutes an electron in a redox chemical action 
C. Gains an electron in a redox chemical action  
D. Accelerates a redox chemical action 

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