General Knowledge Quiz - General Science - Chemistry - Chemical Reactions

General Knowledge Quiz - General Science - Chemistry - Chemical Reactions & Equations:

1. If some amount of energy is released in a chemical reaction, then It is called ___ reaction

    1.Exothermic                                 2.Endothermic

    3.Oxidation                                     4.Reduction

2. When a small piece of Zinc metal is added to a solution of Copper sulphate and on heating the products formed are ___

    1.CuO                                                2.ZnSO₄ + Cu

    3.ZnO                                                4.H₂

3. The chemical reaction in which energy is absorbed to form a new compound is called ____

    1.Exothermic reaction

    2.Endothermic reaction

    3.Thermal reaction

    4.Photochemical Reaction

4. The reaction 2N₂O --> 2N₂+O₂ is an example for ___ reaction

    1.Combination                              2.Decomposition

    3.Displacement                             4.Double-displacement

5. Colour of Silver Bromide _______

    1.Black                                              4.Silver

    3.Light Yellow                                4.Light Green

6. Ca(OH)₂ + CO₂ --> CaCO₃ + H₂O. In this reaction ____ is responsible for shiny finish to the walls.

    1.CaCO₃                                            2.CO₂

    3.Ca(OH)₂                                        4.H₂O