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This set of General Science Multiple Choice Questions & Answers (MCQs) focuses on Chemistry Set 6

Q1 | Which among the following methods can be used to remove the permanent hardness inwater due to calcium or magnesium sulphates?
  • Sulphonate method
  • Nitrate method
  • Zeolite method
  • None of the above
Q2 | The free electrons are in the __________?
  • Outermost orbit of the metals
  • Innermost orbit of the metals
  • Middle orbits of the metals
  • Any orbit of the metals
Q3 | Which of the following type of Coal, has maximum carbon content?
  • Peat
  • Lignite
  • Antharacite
  • Bituminious
Q4 | What is the common name of Calcium Sulphate Hemihydrate?
  • Bleaching powder
  • Slaked lime
  • Plaster of paris
  • Detergent
Q5 | Which among following is also known as white gold?
  • Nickel
  • Rhodium
  • Platinum
  • Palladium
Q6 | Which acid is described as HOOCCOOH?
  • Oxalic Acid
  • Acetic Acid
  • Carbonic Acid
  • Citric Acid
Q7 | Carnotite is a mineral of which among the following metals?
  • Lead
  • Uranium
  • Aluminium
  • Iron
Q8 | PVC is a polymer of ?
  • Propane
  • Vinyl chloride
  • Styrene
  • Carbonates
Q9 | When Sulphur is heated with rubber, the process is commonly known as ?
  • Galvanization
  • Sulphonation
  • Vulcanization
  • Hydrodesulfurization
Q10 | Which among the following chemicals is used in Photography?
  • Silver Bromide
  • Potassium Chloride
  • Sodium Bromide
  • Magnesium Chloride
Q11 | Which among the following is major component of Gobar Gas?
  • Butane
  • Ethane
  • Propane
  • Metahne
Q12 | Which among the following is a common salt in Detergents?
  • Sulphate
  • Nitrate
  • Sulphonate
  • Carbonate
Q13 | Potassium permanganate is used to purify water. Which among the following properties ofPotassium permanganate helps in this work?
  • sterilizing
  • oxidizing
  • reducing
  • leaching
Q14 | What happens to the weight of Iron, when it rusts?
  • Increases for long time
  • Decreases then increases
  • Increases then decreases
  • Remains the same
Q15 | Lightest and most abundant chemical element, constituting roughly 75 % of the Universe‘selemental mass.
  • Carbon
  • Aluminium
  • Bauxite
  • Hydrogen
Q16 | A cotton wick dipped in pure honey when ignited with a matchstick will ______?
  • Burn Consistently
  • Burn with cracking sound
  • Does not burn at all
  • Burns with too much smoke
Q17 | The easily noticed smell of the LPG gas is because of which among the following?
  • Butane
  • Propane
  • Methane
  • Ethanethiol
Q18 | Which compound of mercury is used as antiseptic?
  • Mercuric sulphide
  • Mercuric oxide
  • Mercuric chloride
  • Mercuric iodide
Q19 | Speed of sound is maximum in which among the following?
  • Solids
  • liquids
  • Gases
  • Vaccum
Q20 | Which among the following metal is highest electrical conductivity as well as highestthermal conductivity?
  • Gold
  • Silver
  • Platinum
  • Iron
Q21 | Calamine is an ore of which among the following?
  • Zinc
  • Copper
  • Mercury
  • Iron
Q22 | Trimethylxanthine is a chemical name of a stimulant which is found in tea and coffee.What is the popular name?
  • Thein
  • Caffeine
  • Theobromine
  • Theophylline
Q23 | The popular drug ?Acetylsalicylic Acid? is commonly known by which among the followingnames?
  • Paracetamol
  • Aspirin
  • Salsalate
  • Wintergreen
Q24 | What are the main constituents of LPG?
  • Methane, Hexane, Ethane
  • Methane, Butane, Propane
  • Ethane, Pentane, Hexane
  • Ethane, Methane, Pentane
Q25 | Which among the following is known as White Vitriol?
  • Zinc Sulphate
  • Zinc Chloride
  • Zinc Phosphate
  • Zinc oxide