Chemistry

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Q. What is the main method of hydrogen production in the industry? (2022)
  • A. Electrolysis of water
  • B. Steam reforming of natural gas
  • C. Thermolysis of water
  • D. Photosynthesis
Q. What is the main method of hydrogen production in the laboratory? (2020)
  • A. Electrolysis of water
  • B. Thermal decomposition of water
  • C. Reaction of metals with acids
  • D. Steam reforming
Q. What is the main monomer used to produce polystyrene? (2021)
  • A. Ethylene
  • B. Styrene
  • C. Propylene
  • D. Vinyl chloride
Q. What is the main product formed when aluminum reacts with hydrochloric acid? (2023)
  • A. AlCl3
  • B. H2
  • C. Al(OH)3
  • D. Al2O3
Q. What is the main product formed when hydrogen reacts with oxygen? (2019)
  • A. Hydrogen peroxide
  • B. Water
  • C. Ozone
  • D. Hydrochloric acid
Q. What is the main product of the reaction between aluminum and hydrochloric acid? (2023)
  • A. AlCl3
  • B. H2
  • C. Al(OH)3
  • D. Al2Cl6
Q. What is the main product of the reaction between an acid and a base? (2019)
  • A. Salt
  • B. Water
  • C. Hydrogen gas
  • D. Carbon dioxide
Q. What is the main product of the reaction of 1-bromo-2-methylpropane with KOH in ethanol? (2020)
  • A. 2-methylpropene
  • B. 2-methylpropan-1-ol
  • C. 1-bromo-2-methylpropane
  • D. 2-bromo-2-methylpropane
Q. What is the main product of the thermal decomposition of ammonium dichromate? (2023)
  • A. Cr2O3
  • B. CrO3
  • C. Cr
  • D. NH3
Q. What is the main product when 1-bromopropane is treated with alcoholic KOH? (2021)
  • A. Propene
  • B. 1-propanol
  • C. 2-propanol
  • D. Bromopropane
Q. What is the main product when 1-bromopropane is treated with magnesium in dry ether? (2019)
  • A. Propane
  • B. Grignard reagent
  • C. Bromopropane
  • D. Propyl alcohol
Q. What is the main product when 1-chloropropane is treated with alcoholic KOH? (2019)
  • A. Propene
  • B. Propan-1-ol
  • C. Propan-2-ol
  • D. Chloropropane
Q. What is the main product when 1-chloropropane is treated with aqueous KOH? (2019)
  • A. Propene
  • B. Propan-1-ol
  • C. Propan-2-ol
  • D. Chloropropane
Q. What is the main product when 1-chloropropane is treated with excess alcoholic KOH? (2020)
  • A. Propene
  • B. 1-Propanol
  • C. 2-Propanol
  • D. Chloropropane
Q. What is the main product when aluminum reacts with hydrochloric acid? (2023)
  • A. AlCl3
  • B. H2
  • C. Al(OH)3
  • D. Al2Cl6
Q. What is the main product when an aldehyde is treated with sodium bisulfite? (2019)
  • A. Aldol
  • B. Bisulfite adduct
  • C. Hydrocarbon
  • D. Alcohol
Q. What is the main product when an amine reacts with a carbonyl compound? (2019)
  • A. Amide
  • B. Alcohol
  • C. Aldehyde
  • D. Ketone
Q. What is the main product when an amine reacts with a haloalkane? (2019)
  • A. Amide
  • B. Quaternary ammonium salt
  • C. Alcohol
  • D. Ester
Q. What is the main product when ethene reacts with water in the presence of an acid? (2023)
  • A. Ethanol
  • B. Ethane
  • C. Acetic acid
  • D. Ethylene glycol
Q. What is the main product when hydrogen reacts with oxygen? (2019)
  • A. Water
  • B. Hydrogen peroxide
  • C. Ozone
  • D. Hydroxide
Q. What is the main product when propan-2-one is treated with sodium borohydride? (2023)
  • A. Propan-1-ol
  • B. Propan-2-ol
  • C. Propan-3-ol
  • D. No reaction
Q. What is the main product when propanal is treated with sodium bisulfite? (2019)
  • A. Sodium propanoate
  • B. Propyl sulfonate
  • C. Propane-1,2-diol
  • D. A bisulfite adduct
Q. What is the main role of dietary fiber in human health? (2021)
  • A. Increase cholesterol
  • B. Aid digestion
  • C. Provide energy
  • D. Enhance taste
Q. What is the main source of omega-3 fatty acids? (2021)
  • A. Fish oil
  • B. Butter
  • C. Coconut oil
  • D. Olive oil
Q. What is the major product of the reaction of 1-bromobutane with sodium hydroxide in ethanol? (2019)
  • A. Butanol
  • B. Butene
  • C. Butyl bromide
  • D. Sodium bromide
Q. What is the maximum number of electrons that can be accommodated in the d subshell? (2019)
  • A. 2
  • B. 6
  • C. 10
  • D. 14
Q. What is the maximum number of electrons that can be accommodated in the p subshell? (2023)
  • A. 2
  • B. 6
  • C. 10
  • D. 14
Q. What is the molality of a solution containing 3 moles of solute in 1 kg of solvent? (2022)
  • A. 3 m
  • B. 1.5 m
  • C. 0.5 m
  • D. 2 m
Q. What is the molality of a solution containing 3 moles of solute in 500 g of solvent? (2021)
  • A. 6 m
  • B. 3 m
  • C. 1.5 m
  • D. 0.5 m
Q. What is the molecular formula of cyclohexane? (2022)
  • A. C6H12
  • B. C6H10
  • C. C6H14
  • D. C6H6
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