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This set of General Science Multiple Choice Questions & Answers (MCQs) focuses on Chemistry Set 3

Q1 | Cassiterite is an ore of which of the following ?
  • Iron
  • Zinc
  • Copper
  • Tin
Q2 | Which of the following are found in nucleus of Deuterium
  • 1 proton & 1 neutron
  • 2 protons
  • 1 proton and 1 electron
  • 2 neutrons only
Q3 | Which among the following provides the centripetal force to an electron circulating aroundthe nucleus?
  • electrostatic forces of repulsion
  • electrostatic force of attraction
  • speed of the electron
  • nuclear charge
Q4 | Which among the following of a catalyst does not change at the end of a reaction?
  • Quantity
  • Chemical Composition
  • Both Quantity and Chemical com position
  • None of the above
Q5 | The noble gases are a group of chemical elements with very similar properties: under standard conditions, they are all odorless, colorless, monatomic gases, with a very low chemical reactivity. How many Noble gases occur naturally?
  • 5
  • 6
  • 7
  • 8
Q6 | Hard Water contains which of the following?
  • Aluminum
  • Chlorine
  • Calcium
  • Zinc
Q7 | Which among the following is an ionic solid?
  • Diamond
  • Dry ice
  • Table salt
  • All are ionic solids
Q8 | Which among the following statements about Ozone is INCORRECT?
  • It is found in the upper atmosphere filters potentially damaging ultraviolet light from reaching the Earth‘s surface
  • It is lighter than oxygen that is why it is found in the upper atmosphere
  • It is an allotrope of oxygen
  • All are correct
Q9 | Which among the following is correct ?
  • Oxidation takes place at Cathode and Reduction Takes Place at Anode
  • Oxidation takes place at Anode and Reduction Takes place at Cathode
  • Both Oxidation and Reduction takes place at cathode
  • Both Oxidation and Reduction takes place at Anode
Q10 | The atomic weight of Chlorine is 35. It consists of _______?
  • 17 Protons + 18 Neutrons
  • 17 Neutrons + 18 protons
  • 17 Neutrons + 17 Protons + 1 electron
  • None of the above
Q11 | When we buy a Jewellery of 22 carat Gold , this means that we are getting a purity of gold with ______?
  • 90%
  • 91.67%
  • 95.50%
  • 98%
Q12 | An Jewellery was left exposed to the atmosphere for some time and it becomes coated with green carbonate. The Jewellery is made up of which of the following?
  • Copper
  • Silver
  • Zinc
  • Gold
Q13 | The process of purifying water by spraying water on to a bed of stones where microorganism live so that the microorganisms feed on the pathogens in water and make the water free from harmful pathogens is called?
  • Stone bed method
  • biofilter method
  • aerobic filtration
  • anerobic filtration
Q14 | As per Avogadro‘s hypothesis , equal volumes of different gases at the same temperatureand pressure contain equal number of ______?
  • Atoms
  • Molecules
  • Particles
  • Electrons
Q15 | Duralumin which is used in making aero planes is an alloy consisting of _____?
  • Aluminum & Copper
  • Aluminum, Copper & Manganese
  • Aluminum, Copper, Manganese & Magnesium
  • Aluminum and zinc
Q16 | Which among the following was the first artificially produced element?
  • Neptunium
  • Ununbium
  • Technetium
  • none of the above
Q17 | Froth & Foams are examples of which of the following ?
  • solid suspended in gas
  • liquid suspended in gas
  • gas suspended in liquid
  • gas suspended in solid
Q18 | Which among the following is most electronegative element?
  • Chlorine
  • FLourine
  • Bromine
  • All of them have same electronegativity
Q19 | What is the main use of Bisphenol A drug ?
  • A drug which was used by sports persons for doping
  • A chemical compound which is used in plastics used for food packaging
  • An alloy which is used in cans of cola drinks
  • None of the above
Q20 | Which among the following is not a constituent of gobar gas?
  • Methane
  • Propane
  • Carbondioxide
  • All are constiuents of Gobar gas
Q21 | Which among the following is incorrect regarding the chemical nature of Diamond & Graphite?
  • Density of Diamond is higher than that of Graphite
  • Diamond is chemically unreactive while graphite is mild reactive
  • Both Diamond and Graphite are good conductors of electricity
  • None of the above
Q22 | Galvanizing is a metallurgical process that is used to coat steel or iron with which of thefollowing?
  • Zinc
  • Lead
  • Chromium
  • Copper
Q23 | Which among the following is Quick Silver?
  • Aluminium
  • Mercury
  • Lead
  • Zinc
Q24 | The primary part of Liquefied Petroleum Gas LPG is ______?
  • Butance
  • Methane
  • Propane
  • Ethane
Q25 | Which among the following explains the radiation emitted by black bodies?
  • Big-bang theory
  • Quantum Theory
  • Piezoelectric Effect
  • None of the above