MCQ Questions on Chemistry General Knowledge Questions and Answers : Chemistry GK


Chemistry General Knowledge questions asked in many competitive exams and also chemistry GK is important for SSC and Banking exams. Practice with important chemistry gk questions with answers.

You should also check physics GK questions , Biology Gk Questions and General Science GK questions for better practice of competitive exams .

Here you can learn chemistry general knowledge with the collection of 100 important chemistry based gk questions. Prepare for competitive exam by practice chemistry question and answers.


Q.1. The chemical used as a fixer in photography is ?

(a) sodium thiosulphate
(b) sodium sulphate
(c) borax
(d) ammonium sulphate

(a) sodium thiosulphate


Q.2. Water drops are spherical because of ?

(a) viscosity
(b) density
(c) polarity
(d) surface tension

(d) surface tension


Q.3. Aspirin is

(a) acetyl salicylic acid
(b) sodium salicylate
(c) methyl salicylate
(d) ethyl salicylate

(a) acetyl salicylic acid


Q.4. The oxide of Nitrogen used in medicine as anaesthetic is ?

(a) Nitrogen pentoxide
(b) Nitrous oxide
(c) Nitric oxide
(d) Nitrogen dioxide

(a) Nitrogen pentoxide


Q.5. Which one of the following metals does not react with water to produce Hydrogen?

(a) Cadmium
(b) Lithium
(c) Potassium
(d) Sodium

(a) Cadmium


Q.6. The most electronegative element among the following is

(a) sodium
(b) bromine
(c) fluorine
(d) oxygen

(c) fluorine


Q.7. Atomic number is equal to

(a) Number of electrons
(b) Number of nutron
(c) Number of protons
(d) Total number of protons and neutrons

(c) Number of protons


Q.8. The cathode of a lead storage battery is made up of

(a) Zinc
(b) Lead oxide
(c) Manganese dioxide
(d) Lead

(d) Lead


Q.9. Vinegar is trade name of

(a) Acetic acid
(b) Chloroform
(c) Ethyl alcohol
(d) Carbon tetrachloride

(a) Acetic acid


Q.10. Which of the following elements behave chemically both as metal and non metal?

(a) Boron
(b) Argon
(c) Carbon
(d) Xenon

(a) Boron


Q.11. Nail polish remover contains

(a) Acetone
(b) Benzeme
(c) Petroleum ether
(d) Acetic acid

(a) Acetone


Q.12. Which one of the following correctly defines the state of glass?

(a) Crystalline solid
(b) Super cooled liquid
(c) Condensed gas
(d) Liquid crystal

(b) Super cooled liquid


Q.13. Which one of the following is an element which never exhibits positive oxidation state in any of its compounds?

(a) Oxygen
(b) Chlorine
(c) Fluorine
(d) Carbon

(c) Fluorine


Q.14. Which one of the following materials is suitable for water purification?

(a) Silicones
(b) Zeolites
(c) Asbestos
(d) Quartz

(b) Zeolites


Q.15. Which one of the following is a major constituent of Biogas ?

(a) Carbon dioxide
(b) methane
(c) hydrogen
(d) nitrogen dioxide

(b) methane


Q.16. Which one of the following is present in the emission from “unleaded petrol”?

(a) carbon monoxide
(b) carbon dioxide
(c) ethylene
(d) hydrocarbons

(d) hydrocarbons


Q.17. Which one of the following is used in preparing match sticks?

(a) Chile saltpeter
(b) Indian salpetre
(c) Red phosphorus
(d) Sodium bicarbonate

(c) Red phosphorus


Q.18. In which of the following cases, components can be separated using a separating funnel?

(a) Mixture of acetone and water
(b) Mixture of oil and water
(c) Different gases in the air
(d) None of the above

(b) Mixture of oil and water


Q.19. Choose the incorrect statement:

(a) Epsom salt is an ore containing Sodium
(b) Bauxite is an ore of Aluminium
(c) Asbestos is an ore containing Calcium
(d) Milarite mineral contains Nickel

(a) Epsom salt is an ore containing Sodium


Q.20. Which of the following is the purest form of Iron?

(a) Pig iron
(b) Cast iron
(c) Wrought iron
(d) None of the above

(c) Wrought iron


Q.21. Which of the following is not a Halide mineral?

(a) Cryolite
(b) Carnalite
(c) Calamine
(d) Fluorite

(c) Calamine


Q.22. Which of the following is correct about the principal quantum number?

(a) It determines the size of the orbital
(b) It can have positive integer values
(c) It identifies the shell
(d) All of the above

(d) All of the above


Q.23. Which of the following was discovered in Milikan’s oil drop experiment?

(a) Charge on a proton
(b) Charge on an electron
(c) Charge to mass ratio of an electron
(d) Mass of a Hydrogen atom

(b) Charge on an electron


Q.24. Which of the following is true about Rutherford model of atom?

(a) it explains how the electrons are distributed around the nucleus
(b) It cannot explain about the stability of an atom around the nucleus
(c) It tells us about the energies of the electrons around the nucleus
(d) All of the above

(b) It cannot explain about the stability of an atom around the nucleus


Q.25. What do we call an ideal body which emits and absorbs all frequencies?

(a) Black body
(b) White body
(c) Red body
(d) Zero body

(a) Black body


Q.26. What do we call the difference between the initial mass energy and the total mass energy of the decay products in a radioactive decay?

(a) entropy
(b) disintegration energy
(c) alpha energy
(d) integration energy

(b) disintegration energy


Q.27. What is the S.I unit of activity?

(a) becquerel
(b) curie
(c) candela
(d) henry

(a) becquerel


Q.28. What nucleus of atom contains ?

(a) protons
(b) electrons
(c) electrons and protons
(d) protons and neutrons

(d) protons and neutrons


Q.29. The isotope atoms differ in ?

(a) number of neutrons
(b) atomic number
(c) number of electrons
(d) atomic weight

(a) number of neutrons


Q.30. Human bone does not contain

(a) calcium
(b) carbon
(c) oxygen
(d) phosphorous

(c) oxygen


Q.31. Homo nuclear molecules contain ?

(a) polar bond
(b) covalent bond
(c) ionic bond
(d) coordinate bond

(b) covalent bond


Q.32. Air contains maximum amount of

(a) oxygen
(b) nitrogen
(c) hydrogen
(d) carbon dioxide

(b) nitrogen


Q.33. Washing soda is ?

(a) sodium sulphite
(b) sodium bicarbonate
(c) sodiun carbonate
(d) sodium biosulphite

(c) sodiun carbonate


Q.34. Natural rubber is a polymer derived from ?

(a) ethylene
(b) propylene
(c) isoprene
(d) butadiene

(c) isoprene


Q.35. Glass is made of the mixture of

(a) Quartz and mica
(b) Sand and salt
(c) Sand and silicates
(d) None of these

(c) Sand and silicates


Q.36. Which one of the following is used as a filter in rubber tyres?

(a) Graphite
(b) Coal
(c) Coke
(d) Carbon black

(d) Carbon black


Q.37. Which one of the following polymeric matreials is used for making bullet proof jacket?

(a) NYLON 6.6
(b) RAYON
(c) KEVLAR
(d) DACRON

(c) KEVLAR


Q.38. Which alloy contains nickel?

(a) Brass
(b) Bronze
(c) Invar
(d) Solder

(c) Invar


Q.39. Which one of the following elements is not present in stainless steel?

(a) Iron
(b) Tungsten
(c) Chromium
(d) Nickel

(b) Tungsten


Q.40. Bronze is an alloy of

(a) Tin and zinc
(b) Iron and zinc
(c) Copper and zinc
(d) Copper and tin

(d) Copper and tin


Q.41. Which of the following is a super cooled liquid?

(a) Copper and tinTeflon
(b) Glass
(c) Mercury
(d) Ice cream

(b) Glass


Q.42. Curd is sour due to presence of

(a) Acidic acid
(b) Tartaric acid
(c) Lactic acid
(d) Oxalic acid

(c) Lactic acid


Q.43. What are Rubies and Sapphires chemically known as

(a) silicon dioxide
(b) aluminium oxide
(c) lead tetra oxide
(d) boron nitride

(b) aluminium oxide


Q.44. Acid rain contains high levels of

(a) oxalic acid
(b) acetic acid
(c) sulphuric and nitric acids
(d) carbolic acid

(d) carbolic acid


Q.45. Which of the following compound of sodium is generally prepared by Solvay process?

(a) Sodium Carbonate
(b) Sodium Hydroxide
(c) Sodium Chloride
(d) All of the above

(a) Sodium Carbonate


Q.46. What happens to the non-metallic character of elements in the p-block of the periodic table?

(a) non-metallic character decreases down the group
(b) non-metallic character increases down the group
(c) No fix pattern
(d) None

(a) non-metallic character decreases down the group


Q.47. Which of the following alkaline earth metals is the rarest in the earth crust?

(a) Calcium
(b) Strontium
(c) Radium
(d) Beryllium

(c) Radium


Q.48. Which of the following is correct about Acetylene?

(a) It is the popular name of ethyne
(b) It is the first stable member of alkyne series
(c) Both a and b
(d) None

(c) Both a and b


Q.49. Which of the following is correct about Hard water?

(a) it is free from soluble salts of calcium and magnesium
(b) it does not give lather with soap
(c) Both a and b
(d) None of the above

(b) it does not give lather with soap


Q.50. Which of these compounds is also known as wood spirit?

(a) Ethanol
(b) Methanol
(c) Propanol
(d) None of the above

(b) Methanol


Q.51. Which of the following is not a mixture?

(a) Ocean water
(b) Table salt
(c) Air
(d) Soil

(b) Table salt


Q.52. What is Tyndall effect?

(a) scattering of a beam of light by the particles of a suspension
(b) refraction of a beam of light by the particles of a solution
(c) scattering of a beam of light by the particles of a colloid
(d) reflection of a beam of light by the particles of a suspension

(c) scattering of a beam of light by the particles of a colloid


Q.53. Which of the following is / are correct statement(s) about Gypsum?

(a) scattering of a beam of light by the particles of a colloid
It’s a mineral composed of calcium sulfate dihydrate
(b) It is a soft mineral
(c) It is commonly added to saline soils to reduce salinity
(d) All of the above

(d) All of the above


Q.54. The main chemical constituent of clay is ?

(a) aluminium silicate
(b) zeolites
(c) aluminium borosilicate
(d) silicon oxide

(a) aluminium silicate


Q.55. Which element found in all organic compounds ?

(a) carbon
(b) nitrogen
(c) calcium
(d) none of them

(a) carbon


Q.56. Alloys made with mercury as one metal are called ?

(a) mixtures
(b) emulsions
(c) solders
(d) amalgams

(d) amalgams


Q.57. All noble gases are ?

(a) colourless
(b) colourless
(c) colourless and odourless
(d) colourless and but have odour

(c) colourless and odourless


Q.58. What is the hardest form of carbon ?

(a) coke
(b) graphite
(c) charcoal
(d) diamond

(d) diamond


Q.59. What is hottest part of the gas flame is called ?

(a) blue zone
(b) luminous zone
(c) dark zone
(d) non-luminous zone

(d) non-luminous zone


Q.60. Atomic number of an element gives

(a) the number of nucleons in its atom
(b) the number of electrons in its atom
(c) the weight of the atom of the element
(d) the total number of elementary particles in its atom

(b) the number of electrons in its atom


Q.61. Which of the following substance is highly plastic?

(a) Quartz
(b) Mica
(c) Clay
(d) Granite

(c) Clay


Q.62. Which one among the following is used as a moderator in nuclear reactors?

(a) Ozone
(b) Heavy hydrogen
(c) Heavy water
(d) Hydrogen peroxide

(c) Heavy water


Q.63. Who discovered radioactivity?

(a) Marie Curie
(b) Roentgen
(c) John Dalton
(d) Henri Becquerel

(d) Henri Becquerel


Q.64. Charcoal is

(a) Amorphous
(b) Crystalline
(c) Hygroscopic
(d) None of these

(a) Amorphous


Q.65. Cooking oil can be converted into vegetable ghee by the process of

(a) Oxidation
(b) Crystallization
(c) Distillation
(d) Hydrogenation

(d) Hydrogenation


Q.66. Another name for mercurous chloride is

(a) Amalgam
(b) Calomel
(c) Blue vitriol
(d) Plaster of paris

(d) Plaster of paris


Q.67. The chief source of aluminium is

(a) Bauxite
(b) Cargolite
(c) Haematite
(d) Feldspar

(a) Bauxite


Q.68. The major constituent of air is

(a) Hydrogen
(b) Carbon dioxide
(c) Nitrogen
(d) Oxygen

(c) Nitrogen


Q.69. The solute in a solution can be separated by

(a) decantation
(b) evaporation
(c) filtration
(d) sedimentation

(b) evaporation


Q.70. The concept of an electrolyte in water was described by

(a) Faraday
(b) Ohm
(c) Debye
(d) Arrhenius

(d) Arrhenius


Q.71. The principle that equal volumes of all gases contain the same number of molecules when under the same conditions of pressure and temperature was given by?

(a) Dmitri Mendeleyev
(b) Jons Jacob Berzelius
(c) Amedeo Avogadro
(d) John Dalton

(c) Amedeo Avogadro


Q.72. If the mass of an atom is 37 and atomic number is 17, then what shall be number of neutrons and protons in it?

(a) 17 Neutrons, 17 Protons
(b) 20 Neutrons, 17 Protons
(c) 17 Neutrons, 20 Protons
(d) 37 Protons, 17 Neutrons

(b) 20 Neutrons, 17 Protons


Q.73. After soil test of an area, it is found that the soil in the field is highly acidic. Which of the following two materials would you suggest to be added to this soil to reduce its acidity?

(a) Lime and Gypsum
(b) Gypsum and Chalk
(c) Lime and Chalk
(d) Lime and Urea

(c) Lime and Chalk


Q.74. Washing soda can be obtained from baking soda by _________:

(a) Heating
(b) Mixing with Hydrochloric Acid
(c) Heating with Slaked Lime
(d) Making a solution in Lime water

(a) Heating


Q.75. Limestone, chalk and marble are different forms of which of the following compounds?

(a) Calcium Chloride
(b) Calcium Carbonate
(c) Magnesium Carbonate
(d) Sodium Carbonate

(b) Calcium Carbonate


Q.76. Due to which of the following acids, Milk tastes sour when kept in the open for sometime?

(a) Lactic Acid
(b) Citric Acid
(c) Acetic Acid
(d) Carbonic Acid

(a) Lactic Acid


Q.77. Which one of the following forms the chief constituent of Vinegar?

(a) Formic acid
(b) Acetic acid
(c) Salicylic acid
(d) Oxalic acid

(b) Acetic acid


Q.78. Which one amongst the following is not a GreenHouse gas?

(a) Nitrogen
(b) Carbon dioxide
(c) Carbon Monoxide
(d) Chloro fluorocarbons

(a) Nitrogen


Q.79. Which element is used in the manufacture of safety matches?

(a) Phosphorous
(b) Magnesium
(c) Silicon
(d) Sulphur

(a) Phosphorous


Q.80. Seaweeds are an important source of which of the following?

(a) Iron
(b) Chlorine
(c) Bromine
(d) Iodine

(d) Iodine


Q.81. Iodine can be separated from a mixture of Iodine and Potassium Chloride by ?

(a) Filtration
(b) Sublimation
(c) Distillation
(d) Sedimentation

(b) Sublimation


Q.82. The material which can be deformed permanently by heat and pressure is called a

(a) thermoset
(b) thermoplastic
(c) chemical compound
(d) polymer

(a) thermoset


Q.83. Mass number of a nucleus is :

(a) the sum of the number of protons and neutrons present in the nucleus
(b) always more than the atomic weight
(c) always less than its atomic number
(d) None of above

(a) the sum of the number of protons and neutrons present in the nucleus


Q.84. Conduction band electrons have more mobility than holes because they are

(a) experience collision more frequently
(b) experience collision less frequently
(c) have negative charge
(d) need less energy to move them

(b) experience collision less frequently


Q.85. Due to rusting the weight of iron

(a) Decreases
(b) Increases
(c) Remains the same
(d) Uncertain

(b) Increases


Q.86. Which gas is used to manufacture vanaspati from vegetable oil is

(a) carbon dioxide
(b) nitrogen
(c) oxygen
(d) hydrogen

(d) hydrogen


Q.87. The most electropositive elements among the following is :

(a) Cs
(b) Ca
(c) Na
(d) Br

(a) Cs


Q.88. What are soaps?

(a) Salts of silicates
(b) Esters of heavy fatty acids
(c) Sodium, salts of heavier fatty acids
(d) Mixture of glycerol and alcohols

(c) Sodium, salts of heavier fatty acids


Q.89. In vulcanisation, natural rubber is heated with

(a) carbon
(b) Silicon
(c) Sulphur
(d) Phosphorus

(c) Sulphur


Q.90. Which variety of glass is heat resistant?

(a) Hard glass
(b) Flint glass
(c) Pyrex glass
(d) Bottle glass

(c) Pyrex glass


Q.91. What is the chemical name for marble?

(a) Potassium nitrate
(b) Calcium carbonate
(c) Titanium dioxide
(d) Calcium bicarbonate

(c) Titanium dioxide


Q.92. Which of the following metals is in liquid state at normal room temperature?

(a) Gallium
(b) Radon
(c) Silicon
(d) Sodium

(a) Gallium


Q.93. The chemical name of bauxite is

(a) Aluminium oxide
(b) Aluminium chloride
(c) Aluminium sulphite
(d) Hydrated aluminium oxide

(d) Hydrated aluminium oxide


Q.94. Which of the following is the hardest element?

(a) Copper
(b) Diamond
(c) Iron
(d) Silicon

(b) Diamond


Q.95. Biogas mainly contains

(a) Oxygen
(b) Carbon dioxide
(c) Methane
(d) Nitrogen

(c) Methane


Q.96. Which among the following gases is used to manufacture chloroform?

(a) Methane
(b) Propane
(c) Ether
(d) Radon

(a) Methane


Q.97. Which metal was first used by man?

(a) Aluminium
(b) Gold
(c) Iron
(d) Brass

(a) Aluminium


Q.98. Which of the following types a PEM cell belongs to?

(a) Galvanic cell
(b) Fuel cell
(c) Dry cell
(d) Electrolytic cell

(b) Fuel cell


Q.99. What do we get when we pass phenol vapours over zinc dust?

(a) Methane
(b) Ethene
(c) Toluene
(d) Benzene

(d) Benzene


Q.100. Which of the following polymer is obtained by the condensation reaction between ethylene glycol and terephthalic acid?

(a) Terelene
(b) PMMC
(c) PVC
(d) None of the above

(a) Terelene


If you like the post kindly comment your feedback.

Leave a Comment