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9th CBSE
IMPORTANT
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Define atomic mass unit. State how do atoms exist?

Important Questions on Periodic Tests

EASY
9th CBSE
IMPORTANT
All In One SCIENCE CBSE Class IX>Chapter 16 - Periodic Tests>Mid Term Tests>Q 8
The relative density of gold is 19.3. The density of water is 108 kgm-3. What is the density of gold in SI units?
MEDIUM
9th CBSE
IMPORTANT
All In One SCIENCE CBSE Class IX>Chapter 16 - Periodic Tests>Mid Term Tests>Q 9
Write two characteristic features of diploblastic animals.
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9th CBSE
IMPORTANT
All In One SCIENCE CBSE Class IX>Chapter 16 - Periodic Tests>Mid Term Tests>Q 1
Evaporation causes cooling. This is because
EASY
9th CBSE
IMPORTANT
All In One SCIENCE CBSE Class IX>Chapter 16 - Periodic Tests>Mid Term Tests>Q 2
A graph is plotted showing the velocity of a bus as a function of time. If the graph is a straight line means that :
MEDIUM
9th CBSE
IMPORTANT
All In One SCIENCE CBSE Class IX>Chapter 16 - Periodic Tests>Mid Term Tests>Q 4
Justify that being disease-free does not mean same as being healthy.
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9th CBSE
IMPORTANT
All In One SCIENCE CBSE Class IX>Chapter 16 - Periodic Tests>Mid Term Tests>Q 5
Why do we say work done against gravity is negative?
EASY
9th CBSE
IMPORTANT
All In One SCIENCE CBSE Class IX>Chapter 16 - Periodic Tests>Mid Term Tests>Q 6
Molecular mass of water is 18 u. What will be the number of molecules of water in 18 g water?
MEDIUM
9th CBSE
IMPORTANT
All In One SCIENCE CBSE Class IX>Chapter 16 - Periodic Tests>Mid Term Tests>Q 7
Distinguish between Bryophyta and Pteriodophyta with one example of each.