EASY
9th Tamil Nadu Board
IMPORTANT
Earn 100

You must have seen brass statues in museums and places of worship. Brass is an alloy made up of approx. 30% zinc and 70% copper. Is brass a pure substance or a mixture or compound?

Important Questions on Matter Around Us

HARD
9th Tamil Nadu Board
IMPORTANT
Science Standard 9>Chapter 10 - Matter Around Us>activity 4>Q 1
Identify whether the given substance is mixture or compound and justify your answer.1.Sand and water 2.Sand and iron filings 3. Concrete 4. Water and oil 5. Salad 6. Water 7. Carbon dioxide 8. Cement 9. Alcohol.
MEDIUM
9th Tamil Nadu Board
IMPORTANT
Science Standard 9>Chapter 10 - Matter Around Us>test yourself>Q 1
Why whole milk is white?
MEDIUM
9th Tamil Nadu Board
IMPORTANT
Science Standard 9>Chapter 10 - Matter Around Us>test yourself>Q 2
Why ocean is blue?
MEDIUM
9th Tamil Nadu Board
IMPORTANT
Science Standard 9>Chapter 10 - Matter Around Us>test yourself>Q 3
Why sun looks yellow when it is really not?
EASY
9th Tamil Nadu Board
IMPORTANT
Science Standard 9>Chapter 10 - Matter Around Us>textbook exercises>Q i
The separation of denser particles from lighter particles done by rotation at high speed is called _____.
EASY
9th Tamil Nadu Board
IMPORTANT
Science Standard 9>Chapter 10 - Matter Around Us>textbook exercises>Q i
Among the following _____  is a mixture.
EASY
9th Tamil Nadu Board
IMPORTANT
Science Standard 9>Chapter 10 - Matter Around Us>textbook exercises>Q i
When we mix a drop of ink in water we get a ______.
EASY
9th Tamil Nadu Board
IMPORTANT
Science Standard 9>Chapter 10 - Matter Around Us>textbook exercises>Q i
_____ is essential to perform separation by solvent extraction method.