General Knowledge Quiz - General Science - Chemistry - Chemical Reactions

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

1. 2Pb(NO₃)₂ --> 2 PbO₂ + 4NO₂ + _____

    1. O₂                                                  2.PbO

    3.NO                                                  4.N₂O

2. The chemical reactions in which energy is absorbed to form a new compound is called _____

    1.Endothermic Reaction

    2.Exothermic Reaction

    3.Light Reaction

    4.all the above

3. The reaction of lead nitrate with dil. HCl represents ____

    1.Combination                              2.Decomposition

    3.Displacement                             4.Double-displacement

4. The reaction Zn + H₂SO₄ --> ZnSO₄ + H₂ represents ___ reaction.

    1.Combination                              2.Decomposition

    3.Displacement                             4.Double-displacement

5. Na₂SO₄ + ____ --> BaSO₄ + 2NaCl

    1.BaCl₂                                              2. 2 BaCl

    3.Ba₂Cl                                              4.BaCl

6. Rusting of iron is an example of ___ Reaction

    1.Rancidation                                 2.Reduction

    3.Corrosion                                     4.Oxidation

7. Brass is ____

    1.Metal                                            2.Non-metal

    3.Alloy                                              4.Supercooled liquid

8. The colour of Lead iodide precipitate formed due to the reaction of lead nitrate and Potassium Iodide is ___

    1.Blue                                               2.Black

    3.Green                                           4.Yellow

9. In _____  reaction there is only one reactant

    1.Combination                              2.Decomposition

    3.Displacement                             4.Double-displacement

10. Downward arrow in a chemical equation indicates ______

    1.Direction                                      2.Gas

    3.Precipitate                                  4.No reaction