Chemical Reaction And Equation Quiz!

30 Questions | Total Attempts: 78

SettingsSettingsSettings
Please wait...
Chemical Reaction Quizzes & Trivia

.


Questions and Answers
  • 1. 
    Chemically rust is:
    • A. 

      Hydrated ferrous oxide

    • B. 

      Only ferric oxide

    • C. 

      Hydrated ferric oxide

    • D. 

      None of these

  • 2. 
    Both CO2 and H2 gases are:
    • A. 

      Heavier than air

    • B. 

      Colourless

    • C. 

      Acidic in nature

    • D. 

      Soluble in water

  • 3. 
    Fatty food becomes rancid due to the process of:
    • A. 

      Oxidation

    • B. 

      Corresion

    • C. 

      Reduction

    • D. 

      Hydrogenetion

  • 4. 
    We store silver chloride in a dark-colored bottle because it is:
    • A. 

      A white solid

    • B. 

      Undergoes redox reaction

    • C. 

      To avoid action of sunlight

    • D. 

      None of these

  • 5. 
    When a magnesium ribbon is burnt in the air, the ash formed is:
    • A. 

      Black

    • B. 

      White

    • C. 

      Yellow

    • D. 

      Pink

  • 6. 
    In which of the following heat energy will be evolved?
    • A. 

      Electrolysis of water

    • B. 

      Dissolution of NH4Cl in water

    • C. 

      Burning of L.P.G.

    • D. 

      Decomposition of AgBr in presence of sunlight

  • 7. 
    Rancidity can be prevented by:
    • A. 

      Adding antioxidants

    • B. 

      Storing food away from the light

    • C. 

      Keeping food in refrigeretor

    • D. 

      All of these

  • 8. 
    The reaction of H2 gas with oxygen gas to form water is an example of:
    • A. 

      Combination reaction 

    • B. 

      Redox reaction

    • C. 

      Exothermic reaction

    • D. 

      All of these reaction

  • 9. 
    The reaction in which two compound exchange their ions to form two new compounds is called:
    • A. 

      Displacement reaction

    • B. 

      Combination reaction

    • C. 

      Double displacement reaction

    • D. 

      Redox reaction

  • 10. 
    An element X on exposure to moist air turns reddish-brown and a new compound Y is formed. The substance X and Y are
    • A. 

      X=Fe, Y=Fe2O2

    • B. 

      X=Ag, Y=Ag2s

    • C. 

      X=Cu, Y=CuO

    • D. 

      X=Al, Y=Al2O3

  • 11. 
    Before burning in air, the magnesium ribbon is cleaned by rubbing with a sandpaper to:
    • A. 

      Make the ribbon surface shinier

    • B. 

      Remove the layer of magnesium oxide from the ribbon surface

    • C. 

      Remove the layer of magnesium carbonate from the ribbon surface

    • D. 

      Remove the moisture from the ribbon surface

  • 12. 
    In a chemical reaction between sulphuric acid and barium chloride solution the white precipitates formed are of:
    • A. 

      Hydrochloric acid

    • B. 

      Barium sulphate

    • C. 

      Chlorine

    • D. 

      Sulphur

  • 13. 
    The respiration process during which glucose undergoes slow combustion by combining with oxygen in the cells of our body to produce energy is a kind of:
    • A. 

      Exothermic process

    • B. 

      Endothermic process

    • C. 

      Reversible

    • D. 

      Physical process

  • 14. 
    A chemical reaction does not involve:
    • A. 

      Formation of new substances having entirely different properties than that of the  reactants

    • B. 

      Breaking of old chemical bonds and formation of new chemical bonds

    • C. 

      Rearrangement of the atoms of reactants to form new products

    • D. 

      Changing of the atoms of on element into those of another element to form new  products

  • 15. 
    One of the following processes does not involve a chemical reaction. That is:
    • A. 

      Melting of candle wax when heated

    • B. 

      Burning of candle wax when heated

    • C. 

      Digestion of food in our stomach

    • D. 

      Ripening of banana

  • 16. 
    It is necessary to balance a chemical equation in order to satisfy the law of:
    • A. 

      Conservation of motion

    • B. 

      Conservation of momentum

    • C. 

      Conservation of energy

    • D. 

      Conservation of mass

  • 17. 
    You are given the following chemical reaction, this reaction represent:
    • A. 

      Combination reaction as well as double displacement reaction

    • B. 

      Redox reaction as well as displacement reaction

    • C. 

      Double displacement reaction as well as redox reaction

    • D. 

      Decomposition reaction as well as displacement reaction

  • 18. 
    When ferrous sulfate is heated strongly it undergoes decomposition to form ferric oxide as a main product accompanied by a change in colour from:
    • A. 

      Blue to green

    • B. 

      Green to Blue

    • C. 

      Green to Broun

    • D. 

      Broun to Green

  • 19. 
    Which of the following gases is used in the storage of fat and oil-containing foods for a long time?
    • A. 

      Carbondioxide gas

    • B. 

      Nitrogen 

    • C. 

      Oxygen

    • D. 

      Neon

  • 20. 
    Following is given a diagram showing an experimental set-up, The given set-up is used to carry out:
    • A. 

      Distillation of water

    • B. 

      Purification of water

    • C. 

      Electrolysis of water 

    • D. 

      Hydrolysis

  • 21. 
    The displacement reaction between iron (III) oxide and a metal X is used for welding the rail tracks. Here X is:
    • A. 

      Copper granules

    • B. 

      Magnesium ribbon

    • C. 

      Sodium pellets

    • D. 

      Aluminium dust

  • 22. 
    The neutralization reaction between an acid and a base is a type of:
    • A. 

      Double displacement reaction

    • B. 

      Displacement reaction

    • C. 

      Addition reaction

    • D. 

      Decomposition reaction

  • 23. 
    The chemical reaction between Hydrogen sulfide and iodine to give Hydrogen iodide and sulfur is given below, The reducing and oxidizing agents involved in this redox reaction are:
    • A. 

       Iodine and sulphur respectively

    • B. 

       Iodine and hydrogen sulphide respectively

    • C. 

      Sulphur and iodine respectively

    • D. 

      Hydrogen sulphide and sulphur

  • 24. 
    Pb + CuCl2 → PbCl2 + Cu The above reaction is an example of:
    • A. 

      Combination

    • B. 

      Double displacement

    • C. 

      Decomposition

    • D. 

      Displacement

  • 25. 
    Most reactive metal is:
    • A. 

      Mg

    • B. 

      Na

    • C. 

      K

    • D. 

      Al