HARD
8th Karnataka Board
IMPORTANT
Earn 100

Iron displaces copper from copper sulphate solution, but copper cannot displace iron from an iron sulphate solution. Why?

Important Questions on Materials: Metals and Non-Metals

EASY
8th Karnataka Board
IMPORTANT
Science Crash Course (Based on Revised Syllabus-2023)>Chapter 4 - Materials: Metals and Non-Metals>Exercise>Q 23
What type of oxide (acidic or basic) is formed when Magnesium is burnt in oxygen?
EASY
8th Karnataka Board
IMPORTANT
Science Crash Course (Based on Revised Syllabus-2023)>Chapter 4 - Materials: Metals and Non-Metals>Exercise>Q 24
Generally non-metallic oxides are by nature
EASY
8th Karnataka Board
IMPORTANT
Science Crash Course (Based on Revised Syllabus-2023)>Chapter 4 - Materials: Metals and Non-Metals>Exercise>Q 25
Magnesium ribbon on burning in air produces
MEDIUM
8th Karnataka Board
IMPORTANT
Science Crash Course (Based on Revised Syllabus-2023)>Chapter 4 - Materials: Metals and Non-Metals>Exercise>Q 26
The element whose oxide will turn red litmus solution to blue will be:
EASY
8th Karnataka Board
IMPORTANT
Science Crash Course (Based on Revised Syllabus-2023)>Chapter 4 - Materials: Metals and Non-Metals>Exercise>Q 27
Explain the term brittle.
EASY
8th Karnataka Board
IMPORTANT
Science Crash Course (Based on Revised Syllabus-2023)>Chapter 4 - Materials: Metals and Non-Metals>Exercise>Q 28

What is malleability? Which of them shows the malleability-metal or non-metal?

EASY
8th Karnataka Board
IMPORTANT
Science Crash Course (Based on Revised Syllabus-2023)>Chapter 4 - Materials: Metals and Non-Metals>Exercise>Q 29
Write any two physical properties of metals.
MEDIUM
8th Karnataka Board
IMPORTANT
Science Crash Course (Based on Revised Syllabus-2023)>Chapter 4 - Materials: Metals and Non-Metals>Exercise>Q 30
Which non-metal is used to disinfect water?