Core Science Chemistry>Chapter 1 - Chemical Reactions and Equations>EXERCISE 1B>Q 4

EASY

10th CBSE

IMPORTANT

Earn 100

Identify the oxidising agent (oxidant) in the following reaction.
${Pb}_{3} O_{4} + 8 HCl \to 3 {PbCl}_{2} + {Cl}_{2} + 4 H_{2} O$

Important Questions on Chemical Reactions and Equations

HARD

10th CBSE

IMPORTANT

Core Science Chemistry>Chapter 1 - Chemical Reactions and Equations>EXERCISE 1A>Q 1

A chemical reaction is characterised by:

EASY

10th CBSE

IMPORTANT

Core Science Chemistry>Chapter 1 - Chemical Reactions and Equations>EXERCISE 1B>Q 4

Identify the oxidising agent (oxidant) in the following reactions.

2 Mg + O_{2} \to 2 MgO

EASY

10th CBSE

IMPORTANT

Core Science Chemistry>Chapter 1 - Chemical Reactions and Equations>EXERCISE 1B>Q 4

Identify the oxidising agent (oxidant) in the following reactions.

{CuSO}_{4} + Zn \to Cu + {ZnSO}_{4}

EASY

10th CBSE

IMPORTANT

Core Science Chemistry>Chapter 1 - Chemical Reactions and Equations>EXERCISE 1B>Q 4

Identify the oxidising agent (oxidant) in the following reactions.

V_{2} O_{5} + 5 Ca \to 2 V + 5 CaO

EASY

10th CBSE

IMPORTANT

Core Science Chemistry>Chapter 1 - Chemical Reactions and Equations>EXERCISE 1B>Q 4

Identify the oxidising agent (oxidant) in the following reactions.

3 Fe + 4 H_{2} O \to {Fe}_{3} O_{4} + 4 H_{2}

EASY

10th CBSE

IMPORTANT

Core Science Chemistry>Chapter 1 - Chemical Reactions and Equations>EXERCISE 1B>Q 5

During the reaction of some metals with dilute hydrochloric acid, following observations were made.
(a) Silver metal does not show any change
(b) The temperature of the reaction mixture rises when aluminum (Al) is added.
(C) The reaction of sodium metal is found to be highly explosive
(d) Some bubbles of a gas are seen when lead (Pb) is reacted with the acid.
Explain these observations giving suitable reasons.

HARD

10th CBSE

IMPORTANT

Core Science Chemistry>Chapter 1 - Chemical Reactions and Equations>EXERCISE 1B>Q 5

Zinc liberates hydrogen gas when reacted with dilute hydrochloric acid, whereas copper does not.

MEDIUM

10th CBSE

IMPORTANT

Core Science Chemistry>Chapter 1 - Chemical Reactions and Equations>EXERCISE 1B>Q 6

What is meant by rusting? With labelled diagrams describe an activity to find out the conditions under which iron rusts