HARD
8th CBSE
IMPORTANT
Earn 100

What is the reactivity series? Arrange sodium, magnesium, aluminium and copper according to the reactivity series.

Important Questions on Metals and Non-Metals

MEDIUM
8th CBSE
IMPORTANT
Sciwise - A coursebook of Science>Chapter 5 - Metals and Non-Metals>EXERCISE>Q 1
X reacts with an iron nail forming a brown-coloured coating Y on the surface of an iron nail. When Y is mixed in water and tested with litmus paper, the red litmus paper turns into blue. What does the turning of red litmus paper into blue indicate?
MEDIUM
8th CBSE
IMPORTANT
Sciwise - A coursebook of Science>Chapter 5 - Metals and Non-Metals>EXERCISE>Q 1
X reacts with an iron nail forming a brown-coloured coating Y on the surface of an iron nail. When Y is mixed in water and tested with litmus paper, the red litmus paper turns into blue. What does the turning of red litmus paper into blue indicate?
MEDIUM
8th CBSE
IMPORTANT
Sciwise - A coursebook of Science>Chapter 5 - Metals and Non-Metals>EXERCISE>Q 2
Hydrogen is not a metal; then why do we show it in the reactivity series of metals in between lead and copper?
MEDIUM
8th CBSE
IMPORTANT
Sciwise - A coursebook of Science>Chapter 5 - Metals and Non-Metals>EXERCISE>Q 3
Why is the foil that is used to cover food stuff made of aluminium and not any other metal?
MEDIUM
8th CBSE
IMPORTANT
Sciwise - A coursebook of Science>Chapter 5 - Metals and Non-Metals>EXERCISE>DISCUSS
Metals and non-metals have a significant role to play in our lives. Discuss. 
MEDIUM
8th CBSE
IMPORTANT
Sciwise - A coursebook of Science>Chapter 5 - Metals and Non-Metals>EXERCISE>Q 1
List three more uses of iodine in our daily life.
EASY
8th CBSE
IMPORTANT
Sciwise - A coursebook of Science>Chapter 5 - Metals and Non-Metals>EXERCISE>Q 2
What is meant by goitre?