EASY
10th CBSE
IMPORTANT
Earn 100

A shiny brown coloured element 'X' on heating in air becomes black in colour. Name the element 'X' and the black coloured compound formed.

Important Questions on Chemical Reactions And Equations

MEDIUM
10th CBSE
IMPORTANT
Foundation Course Chemistry>Chapter 1 - Chemical Reactions And Equations>NCERT Section>Q 26
Why do we apply paint on iron articles?
EASY
10th CBSE
IMPORTANT
Foundation Course Chemistry>Chapter 1 - Chemical Reactions And Equations>NCERT Section>Q 27
Oil and fat containing food items are flushed with nitrogen. Why?
EASY
10th CBSE
IMPORTANT
Foundation Course Chemistry>Chapter 1 - Chemical Reactions And Equations>NCERT Section>Q 28
Explain the term corrosion with an example.
EASY
10th CBSE
IMPORTANT
Foundation Course Chemistry>Chapter 1 - Chemical Reactions And Equations>NCERT Section>Q 28
Explain the term 'rancidity' with an example.
EASY
10th CBSE
IMPORTANT
Foundation Course Chemistry>Chapter 1 - Chemical Reactions And Equations>EXERCISE>Q 1
When lead nitrate reacts with potassium iodide, yellow precipitate of 
EASY
10th CBSE
IMPORTANT
Foundation Course Chemistry>Chapter 1 - Chemical Reactions And Equations>EXERCISE>Q 2
When ferrous hydroxide reacts with hydrochloric acid, _____ and H2O are produced.
EASY
10th CBSE
IMPORTANT
Foundation Course Chemistry>Chapter 1 - Chemical Reactions And Equations>EXERCISE>Q 3
Which of the following reactions involves the combination of two elements?
EASY
10th CBSE
IMPORTANT
Foundation Course Chemistry>Chapter 1 - Chemical Reactions And Equations>EXERCISE>Q 4
Which of the following is a displacement reaction?