QUIZ 1 (CHEMISTRY)

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Q1) Baryllium Sulphate is less soluble in water due to
  1. High inflammable energy
  2. Low energy of dissociation
  3. Low inflammable energy
  4. Ionic bond.
ANSWER:High inflammable energy

Q2) What is the name of that system, which uses radioactivity to decide the periods of materials of pre-historic period?
  1. Radium dating
  2. Uranium dating
  3. Carbon dating
  4. Deuterium dating
ANSWER:Carbon dating

Q3) Cement is made hard with
  1. dehydration
  2. hydration and dissociation of water 
  3. dissociation of water
  4. polymerisation
ANSWER:hydration and dissociation of water 

 Q4)What happens when a chemical bond is formed?
  1. energy is always absorbed
  2. energy is always released 
  3. more energy is released than absorbed
  4. energy is neither released nor absorbed
ANSWER:energy is always absorbed

 Q5) Which among the following is a carbohydrate?
  1. nylon
  2. cane-sugar
  3. turpentine
  4. hydrogen peroxide
ANSWER:cane-sugar

 Q6) In which of the following states maximum iron ore is found?
  1. FeCO3
  2. Fe2O3
  3. Fe3O4
  4. FeS2
ANSWER:Fe2O3

Q7)"All the four quantum numbers of two electrons in an atom are not the same." It is the law of-
  1. Hund's
  2. Exclusion Principle of Pauli
  3. Uncertainty  Principle of Heisenberg
  4. Avogadro's law
ANSWER:Exclusion Principle of Pauli

Q8) Commercial Nitric Acid is coloured because it contains dissolved :

  1. Oxygen
  2. Nitrous oxide
  3. Nitrogen dioxide
  4. Coloured impurities
ANSWER:Nitrogen dioxide

Q9) Fertiliser having high nitrogen content is:
  1. Urea 
  2. Ammonium Sulphate
  3. Ammonium Nitrate
  4. Calcium citrate
ANSWER:Ammonium Nitrate

Q10) Where does the oxygen that keeps us alive come from?
  1. Carbon dioxide 
  2. Carbonates absorbed from soil
  3. Oxides of minerals 
  4. Water
ANSWER:Water


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