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. Chemically, cane sugar is
A. lactose
B. glucose
C. sucrose
D. starch

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

3. The acid present in lemons and oranges is
A. acetic acid
B. hydrochloric acid
C. citric acid
D. oxalic acid

4. Mesomeric effect involves delocalisation of
A. protons
B. sigma electrons
C. pi electrons
D. None of these

5. During fermentation of sugar, the chief compound always formed is
A. methyl alcohol
B. ethyl alcohol
C. acetic acid
D. ethylene

6. In the brown ring test, the brown colour of the ring is due to
A. nitrosoferrous sulphate
B. ferrous nitrate
C. ferric nitrate
D. a mixture of NO and NO2

7. In the following electron dot structure, calculate the formal charge from left to right nitrogen atom;
A. 1, 1, +1
B. 1, +1, 1
C. +1, 1, 1
D. +1, 1, +1

8. Water, on passing over rocks, becomes hard because it dissolves
A. calcium carbonate
B. sodium chloride
C. sodium carbonate
D. sodium phosphate

9. A gas deviates from ideal behaviour at a high pressure because its molecules
A. attract one another
B. have kinetic energy
C. show the Tyndall effect
D. are bound by covalent bonds

10. Chloromycetin is an
A. antiseptic
B. antidepressant
C. analgesic
D. antibacterial

11. The term 'pH' denotes the
A. temperature of solution
B. vapour pressure of solution
C. acidity or basicity of solution
D. ionic strength of solution

12. The half life time of 1g sample of X is
A. 30 min
B. 15 min
C. 7.5 min
D. 22.5 min

13. The most malleable metal is
A. platinum
B. silver
C. iron
D. gold

14. 12 cc of Hydrogen per second under S.T.P. condition. The current to be passed is
A. 19.3 Amp
B. 9.65 Amp
C. 0.965 Amp
D. 1.93 Amp

15. Fraction of total pressure exerted by methane is
A. 1/9
B. 1/3
C. 8/9
D. 1/2

16. The normality of 30 volume H2O2 is
A. 6.685 N
B. 2.678 N
C. 8.034 N
D. 5.336 N

17. If the energies of the two photons are in the ratio of 3: 2, their wavelengths will be in the ratio of
A. 2: 3
B. 3: 2
C. 9: 4
D. 1: 2

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

19. A metal present in insulin is
A. iron
B. copper
C. zinc
D. aluminium

20. Which of the following metals was first discovered by man?
A. Bronze
B. Silver
C. Iron
D. Copper

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