This article provides you 50+ General Science- Chemistry Gk questions & answers. We have prepared the set of GK questions on Chemistry based on latest questions being asked in competitive examinations. Mark these questions in your list of important GK questions and answers on Chemistry.
Chemistry Gk Questions & Answers
GK questions on Chemistry is provided below-
- Trimethylxanthine is a chemical name of a stimulant which is found in tea and coffee. What is the popular name?
(A) Thein
(B) Caffeine
(C) Theobromine
(D) Theophylline
Answer: B
- When Sulphur is heated with rubber, the process is commonly known as ?
(A) Galvanization
(B) Sulphonation
(C) Vulcanization
(D) Hydrodesulfurization
Answer: C
- Carnotite is a mineral of which among the following metals?
(A) Lead
(B) Uranium
(C) Aluminium
(D) Iron
Answer: B
- Which among the following was the first artificially produced element?
(A) Neptunium
(B) Ununbium
(C) Technetium
(D) none of the above
Answer: C
- Which one amongst the following is not a Green House gas?
(A)Nitrogen
(B) Carbon dioxide
(C) Carbon Monoxide
(D) Chloro fluorocarbons
Answer: A
- Which material is used in the making of the “Solar Cells”?
(A) Tin
(B) Silicon
(C) Caesium
(D) Thallium
Answer: B
- Seaweeds are an important source of which of the following?
(A) Iron
(B) Chlorine
(C) Bromine
(D) Iodine
Answer: D
- What is the reason that despite being third most abundant element on the Earth’s surface and most abundant chemical substance in the universe, Hydrogen is not found as a gas in Earth’s atmosphere?
(A) It is very reactive and unstable gas
(B) It is so light that readily escapes earth’s gravity
(C) It is not found in free state in nature
(D) None of the above reasons
Answer: B
9. How can we prepare Hydrogen at our home?
- Immersing alkali metals in water at room temperature
- b.Pouring Sulphuric acid on a copper plate
- c.Boiling zinc with caustic soda
- Passing electric current through rainwater
Select the correct option from the codes given below:
(A) Only 1 & 2
(B) Only 1, 3 & 4
(C) Only 2, 3 & 4
(D) 1, 2, 3 & 4
Answer: D
- With reference to the Radioactivity, which among the following is called an isomeric transition?
(A) Alpha emission
(B) Gamma emission
(C) Beta emission
(D) X-Ray emission
Answer: B
11. The alloy steel containing chromium to resist rusting is known as stainless steel. What is played by Chromium in stainless steel?
- Chromium does not rust, so it works as protecting cover
- Chromium reacts with Iron to make a compound that is not affected by Oxygen
Select the correct option from the codes given below:
(A) Only 1
(B) Only 2
(C) Both 1 & 2
(D) Neither 1 nor 2
Answer: D
- What is the ratio of pure gold in 18 carat gold?
(A) 65%
(B) 70%
(C) 75%
(D) 80%
Answer: C
- Which metal does not present in the alloy “German Silver”?
(A) Nickel
(B) Zinc
(C) Copper
(D) Silver
Answer: D
- Which particle is the most essential component to continue the chain reaction during the uranium fission?
(A) Electron
(B) Proton
(C) Neutron
(D) Positron
Answer: C
15. How the Cast Iron is different from Wrought Iron?
- Cast iron have higher carbon content than wrought iron
- Cast iron are more ductile compared to wrought iron
- Wrought iron is more stable, pure and stronger, compared to cast iron
Select the correct option from the codes given below:
(A) 3 Only
(B) 1 and 3 Only
(C) 2 and 3 Only
(D) 1,2 and 3
Answer: B
16. Consider the following:
- Nitrous acid
- Nitric acid
- Sulfuric acid
- Hydrochloric acid
Which among the above are common in Acid rains?
(A) Only 1 & 2
(B) Only 2 & 3
(C) Only 2, 3 & 4
(D) Only 1, 2 & 3
Answer: D
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- What is the maximum stress after which the wire breaks called as?
(A) Tensile strength
(B) Shear strength
(C) Bulk strength
(D) Hooke’s strength
Answer: A
- The plum pudding model of atomic structure was given by which scientist?
(A) Rutherford
(B) JJ Thomson
(C) Goldstein
(D) Millikan
Answer: B
- While diluting an acid, it is recommended that the acid should be added to water and not water to the acid, why?
(A) To slow down the exothermic reaction
(B) To slow down the endothermic reaction
(C) To reduce the breakdown of water molecules
(D) To speed up the breakdown of water molecules
Answer: A
20. Which of the following is / are products of the electrolysis of brine solution?
- Hydrogen
- Chlorine
- Sodium hydroxide
Select the correct option from the codes given below:
(A) Only 1 & 2
(B) Only 1 & 3
(C) Only 2 & 3
(D) 1, 2 & 3
Answer: D
- What is the equilibrium distance for Hydrogen atoms?
(A) 0.54 Å
(B) 0.64 Å
(C) 0.74 Å
(D) 0.84 Å
Answer: C
- How many electrons can the s-orbital accommodate?
(A) 1
(B) 2
(C) 8
(D) 16
Answer: B
- Which of the following is responsible for the anomalous behaviour of lithium in the periodic table?
(A) exceptionally small size of its atom and ion
(B) high polarising power
(C) Both (A)and b
(D) None
Answer: C
- Which of the following is NOT correct about the use of Quick lime?
(A) Manufacturing of cement
(B) Manufacture of sodium carbonate
(C) Purification of sugar
(D) used to extinguish fire
Answer: D
- Which of the following metals is the first metal used by (A)man?
(A) Gold
(B) Copper
(C) Silver
(D) Iron
Answer: B
- How many type of elements are there in Glucose?
(A) 3
(B) 12
(C) 45
(D) 6
Answer: A
- Which of the following was the first fundamental particle to be discovered?
(A) Electron
(B) Muon
(C) Neutron
(D) Neutrino
Answer: A
- 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
Answer: A
- What is the general trend for atomic radii of alkali metals as we move down the group?
(A) it increases
(B) it decreases
(C) it remains constant
(D) None of the above
Answer: A
- Which of the following statements is correct about Diborane?
(A) It is pink coloured gas
(B) It is a highly toxic gas
(C) Both a and b
(D) None
Answer: B
- Which of these non-metals are present in Gun powder?
(A) Sulphur
(B) Carbon
(C) Nitrogen
(D) All of the above
Answer: D
- Which of the following detergents represent the liquid dishwashing detergents?
(A) Anionic
(B) Cationic
(C) Non-ionic
(D) None of the above
Answer: C
- What do we call a process in which water is absorbed by solids-colloids causing an enormous increase in volume?
(A) Imbibition
(B) Diffusion
(C) Permeability
(D) Inhalation
Answer: A
- What is water gas?
(A) mixture of CO and H2
(B) mixture of CO and H2O
(C) mixture of CO2 and H2
(D) Carbon mono-oxide
Answer: A
- Which of the following is NOT correct about Alkynes?
(A) They contain at least two triple bond between two carbon atoms
(B) The number of hydrogen atoms is less in alkynes as compared to alkenes
(C) The general formula of Alkynes is CnH2n–2
(D) All are correct
Answer: A
- Choose the correct statement:
(A) Water exists as liquid due to hydrogen bonding
(B) Hydrogen bond is a weak bond as compared to ionic bond
(C) Both a and b
(D) None of the above
Answer: C
- What is the bond order in O2 molecule?
(A) 1
(B) 2
(C) 3
(D) 4
Answer: B
- Which of these polymers is formed by addition polymerization process?
(A) polyethene
(B) polypropylene
(C) PVC
(D) All of the above
Answer: D
- Which of these metals will not melt when kept in palm?
(A) Gallium
(B) Caesium
(C) Zirconium
(D) All of the above
Answer: C
- Which of the following non-metals is used to make antiseptic?
(A) Sulphur
(B) Bromine
(C) Chlorine
(D) Iodine
Answer: D
41. Which of the following is / are correct statements about Metallic oxides?
- Metallic oxides are also called as basic oxides
- Metallic oxides react with acid to give salt and water
Select the correct option from the codes given below:
(A) Only 1
(B) Only 2
(C) Both 1 & 2
(D) Neither 1 nor 2
Answer: C
- What is the pH of water in the Acid rain?
(A) More than 12
(B) Less than 5.5
(C) Between 7 and 11
(D) None of the above
Answer: B
- Which of the following is not a weak electrolyte?
(A) Acetic acid
(B) Carbonic acid
(C) Potassium Hydroxide
(D) All of the above
Answer: C
- Which of these polymers are used to produce Butyl-rubber?
(A) butadiene and neoprene
(B) butadiene and styrene
(C) butadiene and acrylonitrile
(D) butadiene and isobutylene
Answer: D
- Which of the following carbon compound is used in the polymerisation process to produce polythene?
(A) Methane
(B) Ethene
(C) Ethyne
(D) Benzene
Answer: B
- What do we call the number of water molecules present in one formula unit of a salt?
(A) Formul(A)number of salt
(B) Power of the salt
(C) Water of crystallisation
(D) Hydro number
Answer: C
- What is the process known as where acids produce ions when dissolved in water?
(A) Vulcanisation
(B) Dissociation
(C) Scattering
(D) None of the above
Answer: B
- Which of the following acids is used in the Lead storage battery?
(A) Hydrochloric Acid
(B) Sulphuric Acid
(C) Nitric Acid
(D) Phosphoric Acid
Answer: B
- What do we call the molar conductivity when the concentration approaches zero?
(A) Reacting molar conductivity
(B) Zero level molar conductivity
(C) Limiting molar conductivity
(D) Ideal molar conductivity
Answer: C
- Which of the following comprises a standard hydrogen electrode?
(A) A copper electrode coated with carbon black
(B) an iron electrode coated with platinum black
(C) A platinum electrode coated with platinum black
(D) A gold electrode coated with carbon black
Answer: C
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