Write balanced chemical equations for the following reaction: M n O 2 s + H C l a q C o n c . → H e a t M n C l 2 s + C l 2 g + H 2 O l

A balanced chemical equation is an equation for a chemical reaction in which the number of atoms for each element in the reactant side is equal to the product side. M n O 2 s + 4 H C l c o n c . → H e a t M n C l 2 a q + 2 H 2 O l + C l 2 g ↑ On heating, one mole of manganese oxide with 4 moles of concentrated HCl will give 1 mole of manganese chloride, 2 moles of water and 1 mole of chlorine gas.

E M B I B E

NEW ERA CHEMISTRY Textbook for Class X>Chapter 1 - Chemical Reactions and Equations>MOCK TEST>Q 11

MEDIUM

10th CBSE

IMPORTANT

Earn 100

Explain, by giving an example, how oxidation and reduction proceed side by side ?

Important Questions on Chemical Reactions and Equations

MEDIUM

10th CBSE

IMPORTANT

NEW ERA CHEMISTRY Textbook for Class X>Chapter 1 - Chemical Reactions and Equations>MOCK TEST>Q 12

When copper powder is heated strongly in air, it forms copper oxide. Write a balanced chemical equation for this reaction. Name the substance oxidised.

MEDIUM

10th CBSE

IMPORTANT

NEW ERA CHEMISTRY Textbook for Class X>Chapter 1 - Chemical Reactions and Equations>MOCK TEST>Q 13

What happens when silver bromide is exposed to sunlight? Write a chemical equation for this reaction. Also give one use of such a reaction.

MEDIUM

10th CBSE

IMPORTANT

NEW ERA CHEMISTRY Textbook for Class X>Chapter 1 - Chemical Reactions and Equations>MOCK TEST>Q 13

Iron displaces copper from copper sulphate solution, zinc displaces iron from ferrous sulphate solution and copper displaces silver from silver nitrate solution. Write the reactions involved and arrange the four metals involved in order of their reactivity.

MEDIUM

10th CBSE

IMPORTANT

NEW ERA CHEMISTRY Textbook for Class X>Chapter 1 - Chemical Reactions and Equations>MOCK TEST>Q 14

Write balanced chemical equations for the following reaction:

Pb {({NO}_{3})}_{2} (s) \overset{Heat}{\to} PbO (s) + {NO}_{2} (g) + O_{2} (g)

.

MEDIUM

10th CBSE

IMPORTANT

NEW ERA CHEMISTRY Textbook for Class X>Chapter 1 - Chemical Reactions and Equations>MOCK TEST>Q 14

Write balanced chemical equations for the following reaction:

$M n O_{2} (s) + \underset{C o n c .}{H C l (a q)} \overset{H e a t}{\to} M n C l_{2} (s) + C l_{2} (g) + H_{2} O (l)$

MEDIUM

10th CBSE

IMPORTANT

NEW ERA CHEMISTRY Textbook for Class X>Chapter 1 - Chemical Reactions and Equations>MOCK TEST>Q 14

Write balanced chemical equations for the following reaction:

$Z n (s) + H C l (a q) \to Z n C l_{2} (a q) + H_{2} (g)$

MEDIUM

10th CBSE

IMPORTANT

NEW ERA CHEMISTRY Textbook for Class X>Chapter 1 - Chemical Reactions and Equations>MOCK TEST>Q 14

What is the difference between the simple displacement and double displacement reaction? Give one example of each.

MEDIUM

10th CBSE

IMPORTANT

NEW ERA CHEMISTRY Textbook for Class X>Chapter 1 - Chemical Reactions and Equations>MOCK TEST>Q 15

We have often noticed that a food containing oil or fat, if left for a long time i.e., stale food, develops a bad taste and bad smell. This is because the oils and fats in such foods get oxidised with the passage of time. The oxidation of oils or fats result into a bad smell and bad taste.
Read the above passage and answer the following question:
What is rancidity?

Learn and Prepare for any exam you want !

|

|

|

|

|

|

|

|