EASY
10th ICSE
IMPORTANT
Earn 100

What does an arrow pointing upwards in a chemical reaction indicate? 

Important Questions on Chemical Reactions and Equations

MEDIUM
10th ICSE
IMPORTANT
Science Chemistry>Chapter 1 - Chemical Reactions and Equations>ASSESSMENT>Q 32

What is wrong with the following chemical equation? 

Mg + O →MgO 

MEDIUM
10th ICSE
IMPORTANT
Science Chemistry>Chapter 1 - Chemical Reactions and Equations>ASSESSMENT>Q 33
Name one synthetic antioxidant. 
MEDIUM
10th ICSE
IMPORTANT
Science Chemistry>Chapter 1 - Chemical Reactions and Equations>ASSESSMENT>Q 34
Aluminium is a reactive metal, yet it is used for packing food articles. Why? 
MEDIUM
10th ICSE
IMPORTANT
Science Chemistry>Chapter 1 - Chemical Reactions and Equations>ASSESSMENT>Q 35
Why is combustion reaction an oxidation reaction? 
MEDIUM
10th ICSE
IMPORTANT
Science Chemistry>Chapter 1 - Chemical Reactions and Equations>ASSESSMENT>Q 1

What is the difference between word equation and symbolic equation? Out of word equation and symbolic equation, which one is more informative? 

MEDIUM
10th ICSE
IMPORTANT
Science Chemistry>Chapter 1 - Chemical Reactions and Equations>ASSESSMENT>Q 2

What does the skeletal chemical equation represent? Using the equation for electrolytic decomposition of water differentiate between a skeletal chemical equation and a balanced chemical equation. 

MEDIUM
10th ICSE
IMPORTANT
Science Chemistry>Chapter 1 - Chemical Reactions and Equations>ASSESSMENT>Q 3
A solution of potassium chloride when mixed with silver nitrate solution, an insoluble white substance is formed. Write the chemical reaction involved and also mention the type of the chemical reaction.
EASY
10th ICSE
IMPORTANT
Science Chemistry>Chapter 1 - Chemical Reactions and Equations>ASSESSMENT>Q 4

Identify the following is a chemical change or not with one reason. 

Souring of milk in summer.