RBI Grade B officer - General Chemistry 1000+ MCQ [Solved] PDF Download

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

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

3. Tincture iodine is a solution of
A. iodine in potassium iodide
B. iodine in alcohol
C. iodine in water
D. iodine in carbon disulphide
Answer : B

4. Compounds of nitrogen with metals are called
A. nitrates
B. nitrites
C. hyponitrates
D. nitrides
Answer : D

5. Boiler scales' contain
A. calcium carbonate
B. magnesium bicarbonate
C. calcium sulphate
D. magnesium sulphate
Answer : A

6. Iron is rendered passive by
A. conc. H2SO4
B. conc. HCl
C. conc. HNO3
D. acetic acid
Answer : C

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

8. 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

9. Diamonds are weighed in
A. grams
B. pounds
C. carats
D. tons
Answer : C

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

11. 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

12. The earliest known acid is
A. nitric acid
B. oxalic acid
C. carbonic acid
D. acetic acid
Answer : D

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

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

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

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

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

18. Argyrol used as eye ointment is a solution of
A. hydrogen peroxide
B. silver nitrate
C. tincture iodine
D. m-cresol
Answer : B

19. The gas which has a faint sweet odour is
A. nitrogen
B. nitrous oxide
C. nitric oxide
D. nitrogen peroxide
Answer : B

20. Alum is used
A. as an analgesic
B. in the purification of water
C. as a fertilizer
D. as a disinfectant
Answer : B

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

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

23. 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

24. Galvanising is coating Iron with
A. nickel
B. zinc
C. chromium
D. copper
Answer : B

25. Which of the following is not a metal?
A. Lithium
B. Helium
C. Sodium
D. Cobalt
Answer : B

26. 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

27. 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

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

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

30. The poisonous nature of carbon monoxide is due to
A. cutting off supply of oxygen
B. it™s being converted into carbon dioxide
C. its combination with haemoglobin of blood
D. its blocking of vocal chords
Answer : C

31. Fructose is also called
A. dextrose
B. fruit sugar
C. beet sugar
D. blood sugar
Answer : B

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

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

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

35. A substance used both as an explosive and as a germicide is
A. phenol
B. TNT
C. picric acid
D. iodoform
Answer : C

36. Jeweller's rouge is
A. magnetic oxide of iron
B. ferric oxide
C. ferrous oxide
D. ferrous carbonate
Answer : B

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

38. 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

39. Hypo' is
A. sodium nitrate
B. Potassium nitrate
C. sodium thiosulphate
D. ammonium chloride
Answer : C

40. Which of the following process involves removal of the elements of water?
A. Hydrolysis
B. Hydrogenation
C. Dehydration
D. Dehydrogenation
Answer : C

41. Lead soaps are used in
A. shaving creams
B. adhesive tapes
C. toilet powders
D. lubricants
Answer : B

42. Which among the following is a local anaesthetic?
A. Chloroform
B. Morphine
C. Streptomycin
D. Cocaine
Answer : D

43. 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

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

45. Dry Ice is
A. solid carbon dioxide
B. liquid oxygen
C. liquid hydrogen
D. liquid. Chlorine
Answer : A

46. Chloroform used as anaesthetic should be preserved In the dark in tightly stoppered bottles because otherwise
A. it becomes coloured
B. it gets evaporated in air
C. it gets oxidised to phosgene
D. it gets decomposed to chloropicrin
Answer : C

47. The artificial silk produced from cellulose is
A. Polyethylene
B. Nylon
C. Terylene
D. Rayon
Answer : D

48. 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

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

50. Acute diabetes patients smell of
A. acetone
B. ether
C. ethyl alcohol
D. methyl alcohol
Answer : A