1000+ General Chemistry Multiple Choice Question Answer [Solved]

1. What is 'oxygen mixture'?
A. A mixture of potassium nitrate and carbon
B. A mixture of ammonium chloride and sodium nitrate
C. A mixture of potassium chlorate and manganese dioxide
D. A mixture of ammonium nitrate and charcoal
Answer : C

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

3. The raw materials used in the manufacture of cement are
A. brimstone and silica
B. limestone and clay
C. brimstone and clay
D. brimstone and limestone
Answer : B

4. Solid carbon dioxide (Dry ice) is also known as
A. Thiokol
B. Drikold
C. Perhydrol
D. Mannitol
Answer : B

5. Which of the following is a mixture?
A. Baking soda
B. Milk
C. Chloroform
D. Copper wire
Answer : B

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

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

8. PAS is a drug used In the treatment of
A. tuberculosis
B. cancer
C. typhoid
D. malaria
Answer : A

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

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

11. The compound used in photography is
A. ammonium dichromate
B. copper Sulphate
C. magnesium Sulphate
D. sodium thiosulphate
Answer : D

12. Metals are usually heavy. A light metal is
A. manganese
B. copper
C. potassium
D. plumbum
Answer : C

13. The purest form of carbon is
A. animal charcoal
B. coal
C. wood charcoal
D. sugar charcoal
Answer : D

14. Which one of the following metals is used to extract another metal?
A. Lead
B. Tin
C. Zinc
D. Aluminium
Answer : D

15. Which of the following is a communicable disease caused by viruses?
A. Cholera
B. Dysentery
C. Diabetes
D. Measles
Answer : D

16. BHC is a
A. Rodenticide
B. Herbicide
C. Pesticide
D. Fungicide
Answer : C

17. Gold dissolves in aqua regia due to the formation of
A. chloro auric acid
B. auric chloride
C. gold nitrate
D. aurous chloride
Answer : A

18. Ozone occurs in the upper layers of air in the atmosphere because
A. it is lighter than air
B. in the lower layers it becomes unstable
C. ultra-violet light is present only in the upper layers
D. it mixes freely with O2 in the upper layers
Answer : C

19. Glass articles are annealed so that
A. they may appear better
B. they can resist the action of acids and alkalies
C. they lose their brittleness
D. they can withstand temperature shocks
Answer : C

20. 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

21. Lead pencils contain
A. white lead
B. graphite
C. red lead
D. coke
Answer : B

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

23. Rusting is a special case of corrosion applied to
A. nickel
B. tin
C. iron
D. chromium
Answer : C

24. Marsh gas is
A. ethane
B. ethylene
C. acetylene
D. methane
Answer : D

25. In the process of purification of water for town supply, the substance used to remove bad smell and colour from water is
A. charcoal
B. bleaching powder
C. chlorine
D. carbolic acid
Answer : A

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

27. Which among the following is a solid non-metal?
A. chlorine
B. mercury
C. water
D. iodine
Answer : D

28. A substance used as a fire-extinguisher under the trade name of Pyrene is
A. carbon dioxide
B. chloroform
C. carbon tetrachloride
D. bleaching powder
Answer : C

29. Which of the following is not an antibiotic?
A. streptomycin
B. terramycin
C. aureomycin
D. codein
Answer : D

30. Which one of the following elements is alloyed with iron to produce steel which can resist high temperatures and also have high hardness and abrasion resistance?
A. Aluminium
B. Chromium
C. Nickel
D. Tungsten
Answer : B

31. Which of the following types of water gives lather easily with soap?
A. Hard water
B. Heavy water
C. Soft water
D. Both (a) and (b)
Answer : C

32. The compound which is both an antiseptic and a disinfectant is
A. phenol
B. iodoform
C. bleaching powder
D. blue vitriol
Answer : A

33. Artificial diamonds were produced by
A. Moissan
B. Davy
C. Faraday
D. Marie Curie
Answer : A

34. Isotopes differ in the number of
A. Protons
B. Neutrons
C. Electrons
D. Protons and electrons
Answer : B

35. Rooms in places infected by plague are disinfected using
A. bleaching powder
B. iodoform
C. sulphur dioxide
D. chlorine
Answer : C

36. The human body contains about
A. 50% water
B. 10% water
C. 70% water
D. 20% water
Answer : C

37. In the nitrogen cycle, denitrifying bacteria
A. oxidise ammonia to nitrates
B. convert nitrogen into ammonia
C. oxidise ammonia to free nitrogen
D. oxidise ammonia to oxides of nitrogen
Answer : C

38. The commonest ore of aluminium is
A. cryolite
B. bauxite
C. malachite
D. azurite
Answer : B

39. Clark's method for removal of temporary hardness in water uses
A. calcium hydroxide
B. washing soda
C. calcium chloride
D. zeolite
Answer : A

40. CAN is used as (Calcium Ammonium Nitrate)
A. an explosive
B. a fertilizer
C. a dye
D. a bleaching agent
Answer : B

41. In the mouth, starch is converted into ______ by the action of saliva.
A. sucrose
B. glucose
C. fructose
D. mannose
Answer : D

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

43. The gas used in balloons in the place of hydrogen is
A. nitrogen
B. helium
C. neon
D. argon
Answer : B

44. Lunar caustic is
A. calcium sulphate
B. ammonium chloride
C. caustic soda
D. silver nitrate
Answer : D

45. Dust particles in the air of large industrial cities are removed by
A. Sedimentation
B. Electrophoresis
C. Tyndall effect
D. Brownian movement
Answer : B

46. The name rubber was given by
A. Lavoisier
B. Priestley
C. Dalton
D. Avogadro
Answer : B

47. A mixture of naphthalene and sand is separated by
A. evaporation
B. using a magnet
C. sublimation
D. sedimentation
Answer : C

48. Which among the following gases present in the air discolours brass nameplates?
A. Hydrogen Sulphide
B. Nitrogen
C. Carbon-di-oxide
D. Oxygen
Answer : C

49. The ore of iron is
A. Dolomite
B. Magnetite
C. Bauxite
D. Anglesite
Answer : B

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