1000+ General Chemistry Multiple Choice Question Answer [Solved]

1. Oxalic acid is used in the manufacture of
A. tincture iodine
B. paints
C. ink
D. aerated water
Answer : C

2. Ascorbic acid is the chemical name for
A. Vitamin B6
B. Vitamin C
C. Vitamin K
D. Vitamin D
Answer : B

3. Water has an unusually high bolling point because
A. its molecular weight is low
B. it is denser than ice
C. it is a good solvent for many ionic substances
D. the molecules of water are joined by hydrogen bonds
Answer : D

4. Which or the following is not a constituent or gun powder?
A. Ammonium nitrate
B. Nitre
C. Charcoal powder
D. Sulphur
Answer : A

5. Which one of the following is not radioactive?
A. Astatine
B. Francium
C. Tritium
D. Zirconium
Answer : D

6. An element which is preserved under water is
A. Sodium
B. red phosphorus
C. white phosphorus
D. sulphur
Answer : C

7. The most abundant constituent in air is
A. hydrogen
B. nitrogen
C. oxygen
D. noble gases
Answer : B

8. Setting of cement is due to
A. hydration
B. dehydration
C. dialysis
D. osmosis
Answer : A

9. The best specimen for drinking purposes is
A. rain water
B. river water
C. conductivity water
D. deep well water
Answer : D

10. The compound or nitrogen used in dry cells is
A. ammonia
B. ammonium nitrate
C. ammonium chloride
D. ammonium nitrite
Answer : C

11. The vitamin that is found in citrus fruits such as lemon and orange is
A. vitamin C
B. vitamin B2
C. vitamin A
D. vitamin E
Answer : A

12. Flint glass contains
A. potassium and lead silicates
B. zinc and barium borosilicates
C. potassium and calcium silicates
D. sodium and calcium silicates
Answer : A

13. Coke is a substance obtained
A. from coal mines
B. when wood is burnt in excess of air
C. by heating coal out of contact with air
D. by heating wood out to contact with air
Answer : C

14. Invar, used for making pendulums is an alloy of steel with
A. tungsten
B. nickel
C. manganese
D. chromium
Answer : B

15. The first organic compound prepared in the laboratory was
A. acetic acid
B. chloroform
C. urea
D. methane
Answer : C

16. Nylon is made from
A. terephthalic acid and ethylene glycol
B. hexamethylene diamine and adipic acid
C. cellulose nitrate
D. cellulose acetate
Answer : B

17. Biogas is obtained during
A. decomposition of petrol
B. fermentation of animal and plant waste
C. destructive distillation of coal
D. electrolysis of water
Answer : B

18. The freezing point of water at 760 mm pressure is
A. 273 K
B. 0 K
C. 273°C
D. -273°C
Answer : A

19. Rusting is
A. an oxidation process
B. a reduction process
C. a physical change
D. an electro-chemical process
Answer : D

20. The Combined Gas Law equation is
A. P1V1T1 = P2 V2 T2
B. P1V1T2 = P2V2T1
C. P = P1 + P2 + P3
D. C =
Answer : B

21. Real gases tend to become ideal Under
A. low pressure and high temperature
B. low pressure and low temperature
C. high pressure and low temperature
D. high pressure and high temperature
Answer : A

22. The sugar which is used in silvering mirrors is
A. sucrose
B. maltose
C. glucose
D. fructose
Answer : C

23. The main constituent of gobar gas is
A. methane
B. nitrogen
C. carbondioxide
D. ethylene
Answer : A

24. Cholesterol is
A. a carbohydrate
B. a protein
C. a lipid
D. a hormone
Answer : C

25. The gas evolved when ammonium nitrate is heated is
A. nitrogen
B. nitric oxide
C. nitrogen peroxide
D. nitrous oxide
Answer : D

26. The noble gas which is present in microscopic quantities in air is
A. xenon
B. krypton
C. argon
D. helium
Answer : A

27. The process of heating steel to bright red heat and cooling suddenly by plunging it into water is known as
A. annealing
B. hardening
C. quenching
D. tempering
Answer : B

28. Phosgene is a compound of
A. red phosphorus and oxygen
B. white phosphorus and oxygen
C. carbon monoxide and chlorine
D. carbon dioxide and chlorine
Answer : C

29. The hormone which absorption is increases glucose oxidation and glucose
A. adrenalin
B. thyroxin
C. insulin
D. epinephrine
Answer : C

30. Annealing of glass is carried out by
A. rapid cooling
B. rapid heating
C. slow cooling
D. slow heating
Answer : C

31. Compounds containing only carbon and hydrogen are called
A. carbohydrates
B. carbides
C. hydrocarbons
D. carbonyls
Answer : C

32. Carbogen is used in
A. CO2 poisoning
B. CO poisoning
C. phosgene poisoning
D. anesthesia
Answer : B

33. Invert sugar is
A. sucrose
B. glucose
C. fructose
D. a mixture of glucose and fructose
Answer : D

34. Two or more entirely different compounds having the same molecular formula are known as
A. isobars
B. isotopes
C. isomorphs
D. isomers
Answer : D

35. The modern system of symbols was evolved by
A. Dalton
B. Cavendish
C. Avogadro
D. Berzelius
Answer : D

36. Optical instruments are made of
A. pyrex glass
B. flint glass
C. quartz glass
D. Crooke's glass
Answer : C

37. Hard water does not lather well with soap because
A. it contains carbonates of calcium and magnesium
B. it contains sodium chloride
C. it is highly coloured
D. it contains suspended impurities
Answer : A

38. ________ is left behind after distillation of petroleum.
A. Arsenic
B. Barium
C. Benzene
D. Bitumen
Answer : D

39. An acid which is used as a preservative for pickles is
A. hydrochloric acid
B. citric acid
C. tartaric acid
D. acetic acid
Answer : D

40. The value of Avogadro Number is
A. 6.023 x 1022
B. 1 x 10-14
C. cl 6.056 x 10-6
D. 6.023 x 1023
Answer : D

41. A metal which is extracted by thermal reduction is
A. nickel
B. aluminium
C. mercury
D. calcium
Answer : C

42. Beri-beri is caused by deficiency of Vitamin
A. A
B. C
C. B12
D. B1
Answer : D

43. An important use of nitrous acid is in
A. the manufacture of explosives
B. the manufacture of dyes
C. refrigerators
D. the preparation of drugs
Answer : B

44. An example of stimulant fertilizer is
A. gypsum
B. urea
C. potassium nitrate
D. ammonium phosphate
Answer : A

45. The main element used in the vulcani-sation of rubber is
A. nickel
B. copper
C. sulphur
D. graphite
Answer : C

46. In photography, the compound or nitrogen used is
A. Potassium nitrate
B. Silver nitrate
C. Ammonium carbonate
D. Ammonium bicarbonate
Answer : B

47. Which of the following is not a supporter of combustion?
A. Oxygen
B. Air
C. Hydrogen
D. Chlorine
Answer : C

48. Mild steel contains
A. iron with very low percentage of carbon
B. iron with high percentage of carbon
C. iron and chromium
D. iron and manganese
Answer : A

49. A metal which exhibits allotropy is
A. cobalt
B. tin
C. manganese
D. platinum
Answer : B

50. The compound of iron used in the manufacture of blue-black ink is
A. ferric chloride
B. ferric sulphate
C. ferric thiocyanate
D. ferrous sulphate
Answer : D