General Chemistry MCQ Solved Paper for SSC CHSL

1. Deficiency of iron causes
A. nervous disorders
B. heart diseases
C. anaemia
D. impairment of vision
Answer : C

2. Which of the following can absorb gases quickly?
A. Activated charcoal
B. Anthracite coal
C. Diamond
D. Graphite
Answer : A

3. The scientist who synthesised the first organic compound (urea) in the laboratory was
A. Wohler
B. Dalton
C. Lavoisier
D. Fischer
Answer : A

4. Calomel is
A. lead chloride
B. mercurous chloride
C. mercuric chloride
D. calcium sulphate
Answer : B

5. During fermentation, the by-product is
A. ethyl alcohol
B. methyl alcohol
C. carbon monoxide
D. carbon dioxide
Answer : D

6. Ozone is an allotrope of Oxygen, containing ______ atom/s of oxygen per molecule instead of two.
A. three
B. four
C. one
D. five
Answer : A

7. 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

8. Washing soda is
A. sodium hydroxide
B. sodium carbonate
C. sodium bicarbonate
D. potassium chloride
Answer : B

9. Marble is
A. calcium carbonate
B. sodium carbonate
C. magnesium sulphate
D. ferric chloride
Answer : A

10. Calamine is a ore of
A. tine
B. magnesium
C. zinc
D. copper
Answer : C

11. Harmful bacteria in drinking water cannot be destroyed by
A. chlorination
B. boiling
C. adding caustic soda
D. ozonisation
Answer : C

12. A form of carbon which is a good lubricant is
A. diamond
B. coke
C. graphite
D. charcoal
Answer : C

13. 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

14. Cinnabar is an ore of
A. lead
B. zinc
C. mercury
D. chromium
Answer : C

15. Vulcanisation was discovered by
A. Goodyear
B. Wohler
C. Baeyer
D. Perkin
Answer : A

16. Gases have
A. a definite shape but not volume
B. a definite volume and shape
C. a definite volume but not shape
D. neither definite volume nor shape
Answer : D

17. Heavy water was discovered by
A. TW Richards
B. FW Aston
C. Stas
D. Urey
Answer : D

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

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

20. Rayon la made from
A. cotton
B. wool
C. cellulose
D. silk
Answer : C

21. Which of the following is not an alloy of copper?
A. Bronze
B. Brass
C. Solder
D. Gun metal
Answer : C

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

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

24. A mixture of carbon monoxide and hydrogen is
A. coal gas
B. producer gas
C. water gas
D. gobar gas
Answer : C

25. An example of thermo setting plastics is
A. bakelite
B. polythene
C. PVC
D. Teflon
Answer : A

26. Which of the following is not a food material?
A. silicate
B. protein
C. fat
D. carbohydrate
Answer : A

27. A non-material kind of pollution is
A. land pollution
B. air pollution
C. noise pollution
D. water pollution
Answer : C

28. Which of the following statements regarding natural radioactivity is true?
A. It is spontaneous disintegration of atoms
B. It is induced by bombardment with projectiles
C. It is transmutation of atoms with projectiles
D. It is dependent on temperature
Answer : A

29. Galvanised iron sheets are protected from rusting due to the presence of a layer of
A. lead
B. chromium
C. zinc
D. tin
Answer : C

30. 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

31. Which of the following is used as an illuminant?
A. Gasoline
B. Benzoline
C. Kerosene
D. Petroleum ether
Answer : C

32. Glass is a ______ mixture of metallic ______.
A. homogeneous, sulphates
B. heterogeneous, nitrates
C. heterogeneous, carbonates
D. homogeneous, silicates
Answer : D

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

34. Which one of the following is present in the largest amount in terms of per cent by mass in the earth's crust?
A. Silicon
B. Oxygen
C. Carbon
D. Calcium
Answer : B

35. Water always contains hydrogen and oxygen in the ratio 1:8 by weight. This is in accordance with the
A. Law of Multiple Proportions
B. Law of Definite Proportions
C. Law of Conservation of Mass
D. Law of Reciprocal Proportions
Answer : B

36. The substance most abundantly found in sea water is
A. magnesium chloride
B. sodium chloride
C. calcium sulphate
D. potassium chloride
Answer : B

37. 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

38. The simplest hydrocarbon is
A. benzene
B. methane
C. ethane
D. butane
Answer : B

39. The atomic number of an element represents
A. number of neutrons in the nucleus
B. number of protons and neutrons in the nucleus
C. the valency of the element
D. number of protons in the nucleus
Answer : D

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

41. 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

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

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

44. Rusting of iron cannot be prevented by
A. painting
B. applying alkaline phosphate
C. applying soap water
D. galvanising
Answer : C

45. Sulphur is readily soluble in
A. Water
B. Alcohol
C. Carbon-di-sulphide
D. Sodium chloride solution
Answer : C

46. Ethyl alcohol is
A. a deliquescent substance
B. an efflorescent substance
C. a hygroscopic substance
D. a dehydrating substance
Answer : C

47. 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

48. White lead is
A. a basic salt
B. an acid salt
C. a double salt
D. a normal salt
Answer : A

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

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