Helium is a noble gas because it is very reactive.

Important Questions on Materials : Metals and Non-metals

EASY

8th CBSE

IMPORTANT

EUREKA PLUS Revised Bringing Science to Life>Chapter 4 - Materials : Metals and Non-metals>EXERCISES>Q 7

Brass is a metal element.

MEDIUM

8th CBSE

IMPORTANT

EUREKA PLUS Revised Bringing Science to Life>Chapter 4 - Materials : Metals and Non-metals>EXERCISES>Q 8

Steel contains iron and carbon.

EASY

8th CBSE

IMPORTANT

EUREKA PLUS Revised Bringing Science to Life>Chapter 4 - Materials : Metals and Non-metals>EXERCISES>Q 1

________(sulphur/phosphorous) is a non-metal used in vulcanisation of rubber.

EASY

8th CBSE

IMPORTANT

EUREKA PLUS Revised Bringing Science to Life>Chapter 4 - Materials : Metals and Non-metals>EXERCISES>Q 2

______(Nitrogen/Sulphur) is used in making fertilizers.

EASY

8th CBSE

IMPORTANT

EUREKA PLUS Revised Bringing Science to Life>Chapter 4 - Materials : Metals and Non-metals>EXERCISES>Q 3

_______(Nitrogen/Phosphorous) is used to make matchstick heads.

EASY

8th CBSE

IMPORTANT

EUREKA PLUS Revised Bringing Science to Life>Chapter 4 - Materials : Metals and Non-metals>EXERCISES>Q 4

_______(Quartz, carbon) crystals are used for keeping time in watches.

MEDIUM

8th CBSE

IMPORTANT

EUREKA PLUS Revised Bringing Science to Life>Chapter 4 - Materials : Metals and Non-metals>EXERCISES>Q 5

_____ (carbon/sulphur) is a non-metal that has a high melting point.

EASY

8th CBSE

IMPORTANT

EUREKA PLUS Revised Bringing Science to Life>Chapter 4 - Materials : Metals and Non-metals>EXERCISES>Q 6

______ (Gold/Iron) metal is found in pure state in nature.