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. Its de Broglie wavelength is 6.62 10-35m. Hence x is (h = 6.62 10-34Js)
A. 0.2 kg 
B. 0.15 kg 
C. 0.25 kg 
D. 0.1 kg  

2. If the enthalpy change for the transition of liquid water to steam is 30 kJ mol1 at 27C, the entropy change for the process would be
A. 0.1 J mol1 K1 
B. 100 J mol1 K1 
C. 1.0 J mol1 K1 
D. 10 J mol1 K1 

3. The major constituent of air is
A. Nitrogen 
B. Carbon dioxide 
C. Oxygen 
D. Hydrogen 

4. The number of unidentate ligands in the complex ion is called
A. Primary valency 
B. Coordination number 
C. EAN 
D. Oxidation number 

5. Among the following, the compound that contains ionic, covalent and coordinate linkage is
A. CaO 
B. NaCl 
C. NH3 
D. NH4Cl 

6. Which is the most easily liquifiable rare gas?
A. Kr 
B. Xe 
C. Ar 
D. Ne 

7. The gas used for artificial ripening of green fruit is
A. Ethylene 
B. Ethane 
C. Carbon dioxide 
D. Acetylene 

8. 023 g of sodium metal is reacted with 100 cm3 of water. The pH of the resulting solution is
A. 12 
B. 8 
C. 9 
D. 10 

9. For the given alkane the IUPAC name is
A. 2-methyl, -6-propyl octane 
B. 1, 1 dimethyl-5-ethyl octane 
C. 6-ethyl-2-methyl nonane 
D. 4-ethyl-8-methyl nonane 

10. The maximum number of hydrogen bonds that a molecule of water can have is
A. 2 
B. 1 
C. 4 
D. 3 

11. An example for autocatalysis is
A. Oxidation of SO2 to SO3 
B. Decomposition of KClO3 to KCl and O2 
C. Oxidation of oxalic acid by acidified KMnO4 
D. Oxidation of NO to NO2 

12. The chemical name of anisole is
A. Methoxy benzene 
B. Acetone 
C. Propanone 
D. Ethanoic acid 

13. For the reaction Fe2O3 + 3CO 2Fe + 3CO2 the volume of carbon monoxide required to reduce one mole of ferric oxide is
A. 67.2 dm3 
B. 44.8 dm3 
C. 22.4 dm3 
D. 11.2 dm3 

14. 2 g of organic compound on Kjeldahilization liberates ammonia which consumes 30 cm3 of 1 N HCl. The percentage of nitrogen in the organic compound is
A. 30 
B. 46.67 
C. 35 
D. 20.8 

15. Producer gas chemically consists of
A. CO+H2 
B. CO+N2 
C. CO2+N2 
D. CO2+H2 

16. Milk is an example of
A. Suspension 
B. Gel 
C. Emulsion 
D. Foam 

17. Which one of these is NOT TRUE for benzene?
A. There are three carbon-carbon single bonds and three carbon-carbon double bonds 
B. It forms only one type of monosubstituted product 
C. The bond angle between carbon-carbon bonds is 120 
D. Heat of hydrogenation of benzene is less than the theoretical value 

18. Which of the following compounds has the lowest melting point?
A. CaCl2 
B. CaBr2 
C. CaI2 
D. CaF2 

19. The iron ore magnetite consists of
A. Fe2O3 
B. Fe3OH4 
C. FeCO3 
D. 3Fe2O3 .. 3H2O 

20. An ionic compound is expected to have tetrahedral structure if lies in the range of
A. 0.414 to 0.732 
B. 0.225 to 0.414 
C. 0.732 to 1 
D. 0.155 to 0.225 

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