EASY
9th CBSE
IMPORTANT
Earn 100
Define a Hypotonic solution.
Important Questions on Model Test Paper (As Per the Latest Marking Scheme)
EASY
9th CBSE
IMPORTANT
Explain why air is used to inflate tyres.
EASY
9th CBSE
IMPORTANT
Explain why steel is used to make railway lines.
EASY
9th CBSE
IMPORTANT
What is meant by atomicity? Explain with two examples.
EASY
9th CBSE
IMPORTANT
From the symbol state
(I) mass number of phosphorus,
(II) atomic number of phosphorus, and
(III) electron configuration of phosphorus.
EASY
9th CBSE
IMPORTANT
State whether the following statements are true or false:
(a) A falling stone also attracts the earth.
(b) The force of gravitation between two objects depends on the nature of the medium between them.
(c) The weight of an object on earth is about one-sixth of its weight on the moon.
EASY
9th CBSE
IMPORTANT
Give one example in which a force does positive work.
EASY
9th CBSE
IMPORTANT
Give one example in which a force does negative work.
EASY
9th CBSE
IMPORTANT
Give one example in which a force does zero work.
