Describe the uses of carbon.

Important Questions on Metals and Non-metals

HARD

8th CBSE

IMPORTANT

Basic Science for Class 8>Chapter 6 - Metals and Non-metals>Exercises>Q C

How would you use the activity series while studying the displacement of hydrogen from acids by metals?

MEDIUM

8th CBSE

IMPORTANT

Basic Science for Class 8>Chapter 6 - Metals and Non-metals>Exercises>Q C

Describe an activity to show that the ‘lead’ of a pencil conducts electricity but a piece of sulphur does not.

EASY

8th CBSE

IMPORTANT

Basic Science for Class 8>Chapter 6 - Metals and Non-metals>Exercises>Q D

Graphite and _____ are lustrous non-metals. (chlorine/ bromine/ iodine)

EASY

8th CBSE

IMPORTANT

Basic Science for Class 8>Chapter 6 - Metals and Non-metals>Exercises>Q D

All _____ are good conductors of heat and electricity. (Metals/ Non-metals)

EASY

8th CBSE

IMPORTANT

Basic Science for Class 8>Chapter 6 - Metals and Non-metals>Exercises>Q D

Though a metal, mercury is a _____ metal at ordinary temperatures.

EASY

8th CBSE

IMPORTANT

Basic Science for Class 8>Chapter 6 - Metals and Non-metals>Exercises>Q D

_____ is used for filling an electrical bulb. (Oxygen/ Nitrogen)

EASY

8th CBSE

IMPORTANT

Basic Science for Class 8>Chapter 6 - Metals and Non-metals>Exercises>Q D

Liquid _____ is used to preserve donated organs. (hydrogen/ nitrogen)

EASY

8th CBSE

IMPORTANT

Basic Science for Class 8>Chapter 6 - Metals and Non-metals>Exercises>Q E

Which of the following is a liquid at ordinary temperatures?