Give an example of a precipitation reaction.

Important Questions on Chemical Reactions and Equations

HARD

10th CBSE

IMPORTANT

Eduwiser's CBSE Chemistry For Class X>Chapter 1 - Chemical Reactions and Equations>Exercise 1>Q 11

Which of the following involves reduction of chlorine?

MEDIUM

10th CBSE

IMPORTANT

Eduwiser's CBSE Chemistry For Class X>Chapter 1 - Chemical Reactions and Equations>Exercise 1>Q 12

Find the oxidising and reducing agents in the following redox reaction.
$\mathrm{Mg}+2\mathrm{HCl}\to {\mathrm{MgCl}}_2+{\mathrm{H}}_2$

EASY

10th CBSE

IMPORTANT

Eduwiser's CBSE Chemistry For Class X>Chapter 1 - Chemical Reactions and Equations>Exercise 1>Q 13

In a chemical reaction, ${\mathrm{E}}_{\mathrm{Products}}>{\mathrm{E}}_{\mathrm{reactants}}$ predict whether the reaction will absorb or release energy?

EASY

10th CBSE

IMPORTANT

Eduwiser's CBSE Chemistry For Class X>Chapter 1 - Chemical Reactions and Equations>Exercise 1>Q 14

What is the chemical composition of rust?

MEDIUM

10th CBSE

IMPORTANT

Eduwiser's CBSE Chemistry For Class X>Chapter 1 - Chemical Reactions and Equations>Exercise 1>Q 15

What type of chemical reaction is responsible for rusting of iron?

EASY

10th CBSE

IMPORTANT

Eduwiser's CBSE Chemistry For Class X>Chapter 1 - Chemical Reactions and Equations>Exercise 1>Q 16

Why do fats and oils develop an unpleasant smell and bad on keeping for some time?

MEDIUM

10th CBSE

IMPORTANT

Eduwiser's CBSE Chemistry For Class X>Chapter 1 - Chemical Reactions and Equations>Exercise 1>Q 17

Name two commonly used antioxidants.

EASY

10th CBSE

IMPORTANT

Eduwiser's CBSE Chemistry For Class X>Chapter 1 - Chemical Reactions and Equations>Exercise 1>Q 18

Name one metal that is not corroded. (gold/aluminium)