1000+ General Chemistry Multiple Choice Question Answer [Solved]

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

2. Which of the following is called 'the King of Chemicals?
A. Nitric acid
B. Hydrochloric acid
C. Silver nitrate
D. Sulphuric acid
Answer : D

3. The function of nitrogen in air is
A. to make air a moderate supporter of combustion
B. to maintain the density of air constant
C. to prevent the hydrogen in air from exploding
D. to reduce the poisonous nature of ozone in air
Answer : A

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

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

6. The principle involved in dialysis, a treatment administered to patients with affected kidneys is
A. Cataphoresis
B. Osmosis
C. Dehydration
D. Diffusion
Answer : B

7. The formula for cane sugar is
A. C6H12O6
B. C2H5OH
C. C12H22O11
D. C7H8O
Answer : C

8. Which of the following is used in fuel to propel rockets?
A. Petrol
B. Kerosene
C. Hydrazine
D. Alcohol
Answer : C

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

10. 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

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

12. 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

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

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

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

16. 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

17. Radium was isolated from
A. galena
B. dolomite
C. sylvine
D. pitchblende
Answer : D

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

19. Burglar proof safes are made of
A. Tungsten steel
B. Manganese steel
C. Chromium steel
D. Nickel steel
Answer : B

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

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

22. The Long Form of the Periodic Table is based on
A. atomic number
B. valency
C. atomic mass
D. atomic radius
Answer : A

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

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

25. Which of the following is an essential constituent of acids?
A. Oxygen
B. Nitrogen
C. Hydrogen
D. Chlorine
Answer : C

26. Nitrous oxide used as anaesthetic is usually mixed with
A. ethyl alcohol
B. chloroform
C. oxygen
D. methyl alcohol
Answer : C

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

28. Which of the following is baking soda?
A. Na2CO3 . 10H2O
B. NaHCO3
C. Na2CO3 . H2O
D. NH4CI
Answer : B

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

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

31. An essential condition for rusting is
A. high temperature
B. light
C. moisture
D. dry air
Answer : C

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

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

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

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

36. In the common soda-acid fire extinguisher, the fire is put out by
A. acid fumes
B. sodium bicarbonate
C. carbon dioxide
D. sodium carbonate
Answer : C

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

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

39. The neutron was discovered by
A. Chadwick
B. Madam Curie
C. Becquerel
D. Aston
Answer : A

40. Which of the following is not a chemical change?
A. Burning of magnesium ribbon in air
B. Distillation of water
C. Heating of cane sugar
D. Setting of cement
Answer : B

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

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

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

44. 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

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

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

47. The kinetic energy of gas molecules
A. is unaffected by temperature variations
B. decreases with increase of temperature
C. increases with decrease of temperature
D. increases with increase of temperature
Answer : D

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

49. Which of the following biology laboratory?
A. Phenol
B. Benzaldehyde
C. Formaldehyde
D. Acetic acid
Answer : C

50. Bordeaux mixture contains
A. copper sulphate and water
B. copper sulphate, lime and water
C. thio-urea and lime
D. copper sulphate and thio-urea
Answer : B