GRE - General Chemistry 1000+ MCQ [Solved] PDF Download

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

2. Plastics are synthetic
A. rubbers
B. fibres
C. resins
D. sugars
Answer : C

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

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

5. The carbon cycle ensures that
A. the percentage of carbon dioxide in air is kept almost constant
B. air always contains a constant proportion of oxygen
C. sufficient amounts of carbohydrates are produced
D. the process of photosynthesis proceeds smoothly
Answer : A

6. Which or the following gases is soluble in water and Is collected by the downward displacement or air?
A. Carbon dioxide
B. Sulphur dioxide
C. Ammonia
D. Hydrogen
Answer : C

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

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

9. In addition to nitric acid, another acid which may render iron passive is
A. acetic acid
B. oxalic acid
C. chromic acid
D. citric acid
Answer : C

10. Quick lime has the formula
A. CaO
B. Ca(OH)2
C. NaOH
D. Na2CO3
Answer : A

11. A mixture of ethyl alcohol and water can be separated by
A. evaporation
B. sublimation
C. using a separating funnel
D. fractional distillation
Answer : D

12. The oldest known organic compound is
A. urea
B. methane
C. acetic acid
D. benzene
Answer : C

13. Methylated spirit is a mixture of
A. methyl alcohol and acetic acid
B. methyl alcohol and ethyl alcohol
C. ethyl alcohol and pyridine
D. methyl alcohol and pyridine
Answer : B

14. Which one of the following is used in dry cleaning of garments?
A. asphalt
B. naphtha
C. diesel oil
D. lubricating oil
Answer : B

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

16. The raw materials required for the manufacture of glass are
A. silica, sodium nitrate and soda ash
B. silica, limestone and sodium nitrate
C. silica, sodium oxide and limestone
D. silica, soda ash and limestone
Answer : D

17. The most abundant noble gas present in air is
A. neon
B. argon
C. helium
D. krypton
Answer : B

18. Physico-chemical characteristics of water in water sources undergo changes due to
A. aquatic macrophytes
B. aquatic fungi
C. effluents
D. evapotranspiration
Answer : A

19. Galvanising is the process of coating
A. iron with zinc
B. zinc with iron
C. copper with silver
D. silver with gold
Answer : A

20. The science which deals with the chemistry of life processes is known as
A. electrochemistry
B. physical chemistry
C. biochemistry
D. tinctorial chemistry
Answer : C

21. Which of the following is not a physical change?
A. Distillation of water
B. Action of heat on potassium chlorate
C. Powdering of glass
D. Burning of an electric lamp
Answer : B

22. The process that takes place in the atom bomb is
A. nuclear' fusion
B. radioactive disintegration
C. nuclear fission
D. chemical decomposition
Answer : C

23. Oil of winter green contains
A. acetone
B. ether
C. acetic acid
D. methyl salicylate
Answer : D

24. Which of the following is a regenerated fibre?
A. Terylene
B. Rayon
C. Nylon
D. Silk
Answer : B

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

26. The non-metal which is electropositive is
A. chlorine
B. nitrogen
C. sulphur
D. hydrogen
Answer : D

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

28. Which of the following is a halogen?
A. Radon
B. Astatine
C. Cesium
D. Ruthenium
Answer : B

29. Triple Antigen treatment for children is to ward off
A. whooping cough
B. tetanus
C. diphtheria
D. All the three
Answer : D

30. 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

31. The Carbon dioxide is absorbed by
A. Palladium
B. NaCI
C. KOH
D. Dilute H2SO4
Answer : C

32. Heated saw dust catches fire when a drop of concentrated nitric acid is added to it. This is due to
A. dehydration
B. oxidation
C. reduction
D. dehydrogenation
Answer : B

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

34. White vitriol is
A. ZnSO4 . 7H2O
B. FeSO4 . 7H2O
C. MgSO4 . 7H2O
D. CaSO4 . 2H2O
Answer : A

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

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

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

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

39. Solder is an alloy of
A. tin and copper
B. tin and lead
C. tin and zinc
D. tin, copper and zinc
Answer : C

40. A burning substance which continues to burn in a jar of carbon dioxide is
A. zinc
B. red phosphorus
C. magnesium
D. sulphur
Answer : C

41. Which one of the following is used for dry cleaning?
A. Kerosene oil
B. Diesel oil
C. Lubricating oil
D. Petroleum ether
Answer : D

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

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

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

45. The depletion of the ozone layer in the upper atmosphere is due to -extensive use of
A. dichloro-phenoxy-acetic acid
B. superphosphate of lime
C. chlorofluorocarbons (CFC)
D. dichloro-diphenyl-trichloro-ethane
Answer : C

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

47. Consider the following statements: Hard water is not suitable for
1) drinking
2) washing clothes with soap
3) use in boilers
4) irrigating crops
Which of these statements are correct?
A. 1 and 3
B. 2 and 3
C. 1, 2 and 4
D. 1, 2, 3 and 4
Answer : D

48. The form of carbon used in decolourising sugar solution is
A. wood charcoal
B. animal charcoal
C. coconut charcoal
D. lamp black
Answer : B

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

50. The scientist associated with the discovery of the nucleus was
A. Rutherford
B. Moseley
C. Niels Bohr
D. J.J. Thomson
Answer : A