Question

When a small piece of zinc metal is added to a solution of Copper sulphate and
on heating the products formed are
A) Cuo
B) ZnSO4 +Cu C)ZnO
D) H21
The chemical reaction in which energy is absorbed to form a new compound is
called
A) exothermic reaction
B) endothermic reaction
C) thermal reaction
D) photochemical reaction
The colour of Lead Iodide precipitate formed due to the reaction of Lead nitrate
and Potassium iodide is
A) blue
B) black
D) yellow
The substances that are present on left side of a chemical equation are called
A) reactants B) products C) precipitates
D) gases
A chemical equation should be balanced because the law should be
verified
A) constant proportions
B) conservation of mass
C) law of equality
D) law of balance
llowing is a skeleton reaction?
C) green
6.
7​

Answer 1

Answer:

1b)ZnSO4+Cu

2b)Endothermic reaction

3d)Yellow

4a)Reactants

5b)Conservation of Mass

Hope it helps U..

Explanation:

Answer 2

Answer:

1 B

2 B

3 D

4 A

5 B

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