MEDIUM
10th CBSE
IMPORTANT
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When copper metal corrodes, green deposits are formed on its surface. What is its chemical name and formula?

Important Questions on Chemical Reactions and Equations

EASY
10th CBSE
IMPORTANT
PRACHI SCIENCE CHEMISTRY CLASS-X>Chapter 1 - Chemical Reactions and Equations>Check Your Progress>Q 3
Why is Aluminium metal called self-protecting metal?
EASY
10th CBSE
IMPORTANT
PRACHI SCIENCE CHEMISTRY CLASS-X>Chapter 1 - Chemical Reactions and Equations>Check Your Progress>Q 4
To preserve cooked food items, we flush with nitrogen or keep them refrigerated. Why?
MEDIUM
10th CBSE
IMPORTANT
PRACHI SCIENCE CHEMISTRY CLASS-X>Chapter 1 - Chemical Reactions and Equations>Formative Assessment>Q 1
What is the colour and formula of sodium sulphate?
EASY
10th CBSE
IMPORTANT
PRACHI SCIENCE CHEMISTRY CLASS-X>Chapter 1 - Chemical Reactions and Equations>Formative Assessment>Q 2
During respiration, glucose and oxygen combines in the cells of our body when energy is released. What is the best way to describe the reaction that takes place during the process of respiration?
MEDIUM
10th CBSE
IMPORTANT
PRACHI SCIENCE CHEMISTRY CLASS-X>Chapter 1 - Chemical Reactions and Equations>Formative Assessment>Q 3
What becomes the colour of iron nails after they have been kept in the blue solution of copper sulphate for about 20 minutes?
MEDIUM
10th CBSE
IMPORTANT
PRACHI SCIENCE CHEMISTRY CLASS-X>Chapter 1 - Chemical Reactions and Equations>Formative Assessment>Q 4
Barium chloride and sodium sulphate react to produce
MEDIUM
10th CBSE
IMPORTANT
PRACHI SCIENCE CHEMISTRY CLASS-X>Chapter 1 - Chemical Reactions and Equations>Formative Assessment>Q 5
The action of water on quick lime is an example of which type of reaction?
MEDIUM
10th CBSE
IMPORTANT
PRACHI SCIENCE CHEMISTRY CLASS-X>Chapter 1 - Chemical Reactions and Equations>Formative Assessment>Q 6
What is the nature of the new product which is formed by the action of water on quick lime?