NEET PG - General Chemistry 1000+ MCQ [Solved] PDF Download

1. Which one of the following is not radioactive?
A. Astatine
B. Francium
C. Tritium
D. Zirconium
Answer : D

2. Hydrogen gas has
A. a very sweet smell
B. a very pungent smell
C. an irritating smell
D. no smell at all
Answer : D

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

4. Which one of the following gases is extremely soluble in water?
A. Carbon dioxide
B. Ammonia
C. Chlorine
D. Hydrogen sulphide
Answer : B

5. Cupellation is used in the purification of
A. Lead
B. Tin
C. Silver
D. Gold
Answer : C

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

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

8. Optical instruments are made of
A. pyrex glass
B. flint glass
C. quartz glass
D. Crooke's glass
Answer : C

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

10. Annealing of glass is carried out by
A. rapid cooling
B. rapid heating
C. slow cooling
D. slow heating
Answer : C

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

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

13. A non-metal which is a good conductor or heat and electricity is
A. iodine
B. sulphur
C. graphite
D. phosphorus
Answer : C

14. 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

15. 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

16. Apart from lead tetra-ethyl, the other compound used as antiknock is
A. n-heptane
B. n-octane
C. iso-heptane
D. iso-octane
Answer : D

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

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

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

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

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

22. Petroleum ether is also known as
A. kerosene
B. naphtha
C. lubricating oil
D. asphalt
Answer : B

23. If people sleep in closed rooms where charcoal fire is burning, they die due to
A. carbon monoxide
B. carbon dioxide
C. methane
D. phosgene
Answer : A

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

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

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

27. 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

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

29. 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

30. Reduction involves
A. loss of electrons
B. gain of electrons
C. gain of oxygen
D. removal of hydrogen
Answer : B

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

32. 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

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

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

35. The sugar which is used in silvering mirrors is
A. sucrose
B. maltose
C. glucose
D. fructose
Answer : C

36. Which or the following is not a constituent or gun powder?
A. Ammonium nitrate
B. Nitre
C. Charcoal powder
D. Sulphur
Answer : A

37. 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

38. The number of neutrons in the nucleus of an atom of mass A and atomic number Z is given by
A. A - Z
B. A + Z
C. Z
D. A
Answer : A

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

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

41. Suspended impurities in water are effectively removed by
A. adding milk of lime
B. filtering through sand
C. adding filter alum
D. chlorination
Answer : C

42. 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

43. Which of the following is not a chemical change?
A. Rusting of iron
B. Burning of magnesium
C. Sublimation of iodine
D. Electrolysis of water
Answer : C

44. The flux added in the blast furnace is
A. Limestone
B. FeO
C. SiO2
D. MgO
Answer : A

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

46. 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

47. The presence of dust particles in air serves
A. as a nucleus to condense water vapour resulting in rain
B. to maintain the average density of air
C. to minimise the inflammatory nature of oxygen
D. to protect the inhabitants of the earth from the effects of ultra violet rays.
Answer : A

48. A common rodenticide is (Rat Poison)
A. malathion
B. parathion
C. zinc phosphide
D. diuron
Answer : C

49. Which of the following is used as a food preservative?
A. phenol
B. washing soda
C. absolute alcohol
D. vinegar
Answer : D

50. Riboflavin deficiency causes
A. tongue inflammation
B. pellagra
C. night blindness
D. anaemia
Answer : A