EASY
8th Karnataka Board
IMPORTANT
Earn 100

Of these, the least dense metal is _____

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Important Questions on Materials: Metals and Non-Metals

MEDIUM
8th Karnataka Board
IMPORTANT
Science Crash Course (Based on Revised Syllabus-2023)>Chapter 4 - Materials: Metals and Non-Metals>Exercise>Q 20
Phosphorus is kept in water. Why?
MEDIUM
8th Karnataka Board
IMPORTANT
Science Crash Course (Based on Revised Syllabus-2023)>Chapter 4 - Materials: Metals and Non-Metals>Exercise>Q 21
Write word equation and chemical equation for the following:
Reaction of sodium with water.
HARD
8th Karnataka Board
IMPORTANT
Science Crash Course (Based on Revised Syllabus-2023)>Chapter 4 - Materials: Metals and Non-Metals>Exercise>Q 22
Iron displaces copper from copper sulphate solution, but copper cannot displace iron from an iron sulphate solution. Why?
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.