EASY
8th CBSE
IMPORTANT
Earn 100

Name a metal that has the lowest density.

Important Questions on Metals and Non-Metals

MEDIUM
8th CBSE
IMPORTANT
I Explore 3rd EDITION A Science Textbook 8>Chapter 4 - Metals and Non-Metals>EXERCISES>Q E
Give the name and composition of alloy that is used for making bells.
MEDIUM
8th CBSE
IMPORTANT
I Explore 3rd EDITION A Science Textbook 8>Chapter 4 - Metals and Non-Metals>EXERCISES>Q E
Give the name and composition of the alloy that is used for making the bodies of the aircrafts.
EASY
8th CBSE
IMPORTANT
I Explore 3rd EDITION A Science Textbook 8>Chapter 4 - Metals and Non-Metals>EXERCISES>Q E
Name the most common aluminium ore. (Bauxite/ Cinnabar)
EASY
8th CBSE
IMPORTANT
I Explore 3rd EDITION A Science Textbook 8>Chapter 4 - Metals and Non-Metals>EXERCISES>Q E

How much oxygen is present in the Earth's crust by mass?

MEDIUM
8th CBSE
IMPORTANT
I Explore 3rd EDITION A Science Textbook 8>Chapter 4 - Metals and Non-Metals>EXERCISES>Q E

What are the different forms in which silicon exists in Earth's crust?

MEDIUM
8th CBSE
IMPORTANT
I Explore 3rd EDITION A Science Textbook 8>Chapter 4 - Metals and Non-Metals>EXERCISES>Q F
Name the different forms of element existing by 75% mass abundance in Earth's crust.
MEDIUM
8th CBSE
IMPORTANT
I Explore 3rd EDITION A Science Textbook 8>Chapter 4 - Metals and Non-Metals>EXERCISES>Q F
Differentiate between metals and non-metals with respect to conductivity.
MEDIUM
8th CBSE
IMPORTANT
I Explore 3rd EDITION A Science Textbook 8>Chapter 4 - Metals and Non-Metals>EXERCISES>Q F

Copper doesn't give hydrogen gas with hydrochloric acid. Why?