Test Your Knowledge - Free MCQ PRACTICE
by Saksham Chaudhry : 23-B Model Town, Fatehabad 125050 M: 9810570740, 9810571993
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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. Radioactive disintegration of uranium ultimately results in formation of :
A. radium
B. thorium
C. polonium
D. lead

2. Washing soda is
A. sodium chloride
B. hydrated sodium carbonate
C. sodium bicarbonate
D. calcium carbonate

3. Cooking gas supplied in cylinders by gas agencies is in the form of
A. liquid
B. gas
C. solid
D. a solution

4. Which of the following is an intensive property?
A. temperature
B. surface tension
C. viscosity
D. All of these

5. Platinum, Palladium and Iridium are called noble metals because
A. They are shining lustrous and pleasing to look at
B. They are inert towards many common reagents.
C. They are found in native state
D. Alfred Nobel discovered them

6. The filament of an electric bulb is made of :
A. iron
B. nichrome
C. tungsten
D. graphite

7. The amino acid which is not optically active is
A. alanine
B. serine
C. lactic acid
D. glycine

8. Which one of the following statement is no true?
A. Oxides of sulphur, nitrogen and carbon are the most widespread air pollutant
B. Clean water would have a BOD value of less than 5 ppm
C. pH of drinking water should be between 5.5 9.5
D. Concentration of DO below 6 ppm is good for the growth of fish

9. The substance that can conduct electricity in its molten state is
A. polythene
B. glucose
C. common salt
D. urea

10. Waxes are esters of
A. glycerol and fatty acid
B. long chain alcohols and long chain fatty acids
C. long chain alcohols
D. glycerol

11. Chemically, baking soda is
A. calcium phosphate
B. sodium bicarbonate
C. sodium chloridc
D. baker's yeast

12. The drug, reserpine is used to
A. cure arthritis
B. alleviate pain
C. reduce high blood pressure
D. reduce high palpitation

13. The number of naturally occurring p-block elements that are diamagnetic is
A. 7
B. 18
C. 6
D. 5

14. The element not present in fertilisers is
A. nitrogen
B. hydrogen
C. chlorine
D. phosphorus

15. 44 g is treated with sodium carbonate solution to precipitate all the Ca+2 ions as calcium carbonate. The calcium carbonate so obtained is heated strongly to get 0.56 g of CaO. The percentage of NaCl in the mixture (atomic mass of Ca = 40) is
A. 75
B. 69.4
C. 25
D. 30.6

16. 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

17. Clemmensen reduction of a ketone is carried out in the presence of which of the following?
A. H2 and Pt as catalyst
B. LiAlH4
C. Glycol with KOH
D. Zn-Hg with HCl

18. 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

19. Which of the following is the second most abundant metal in the earth's crust?
A. Copper
B. Aluminium
C. Iron
D. Zinc

20. Phenol forms a tribromo derivative "X" is
A. bromine in carbon tetrachloride at 0
B. bromine in water
C. potassium bromide solution
D. bromine in benzene

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