MEDIUM
10th CBSE
IMPORTANT
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Write activity to show the electrolysis of water, as an example of decomposition reaction.

Important Questions on Chemical Reactions and Equations

MEDIUM
10th CBSE
IMPORTANT
PRACHI SCIENCE CHEMISTRY CLASS-X>Chapter 1 - Chemical Reactions and Equations>SUMMATIVE ASSESSMENT MOCK TEST>Q 27
The reaction between iron nails and copper sulphate solution is:
MEDIUM
10th CBSE
IMPORTANT
PRACHI SCIENCE CHEMISTRY CLASS-X>Chapter 1 - Chemical Reactions and Equations>SUMMATIVE ASSESSMENT MOCK TEST>Q 28
The precipitate of barium sulphate formed by the reaction between sodium sulphate and barium chloride solution is soluble in:
MEDIUM
10th CBSE
IMPORTANT
PRACHI SCIENCE CHEMISTRY CLASS-X>Chapter 1 - Chemical Reactions and Equations>SUMMATIVE ASSESSMENT MOCK TEST>Q 29
Which of the following is a single displacement reaction?
MEDIUM
10th CBSE
IMPORTANT
PRACHI SCIENCE CHEMISTRY CLASS-X>Chapter 1 - Chemical Reactions and Equations>SUMMATIVE ASSESSMENT MOCK TEST>Q 33
The oxidation reaction which produces heat and light is
MEDIUM
10th CBSE
IMPORTANT
PRACHI SCIENCE CHEMISTRY CLASS-X>Chapter 1 - Chemical Reactions and Equations>SUMMATIVE ASSESSMENT MOCK TEST>Q 34

2Pb(NO3)2→2PbO+nA+O2

What is nA in the given reaction?

HARD
10th CBSE
IMPORTANT
PRACHI SCIENCE CHEMISTRY CLASS-X>Chapter 1 - Chemical Reactions and Equations>SUMMATIVE ASSESSMENT MOCK TEST>Q 35
A slow combustion in which glucose present in the body cells combine with oxygen to provide energy is
MEDIUM
10th CBSE
IMPORTANT
PRACHI SCIENCE CHEMISTRY CLASS-X>Chapter 1 - Chemical Reactions and Equations>SUMMATIVE ASSESSMENT MOCK TEST>Q 36

In the equation:

Cu+XHNO3→Cu(NO3)2+YNO2+2H2O, the value of X and Y are

MEDIUM
10th CBSE
IMPORTANT
PRACHI SCIENCE CHEMISTRY CLASS-X>Chapter 1 - Chemical Reactions and Equations>SUMMATIVE ASSESSMENT MOCK TEST>Q 39
Which of the following reaction will not take place?