EASY
9th CBSE
IMPORTANT
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 Write the three equations of uniformly accelerated motion. Give the meaning of each symbol that occurs in them.

Important Questions on Model Test Paper 3

MEDIUM
9th CBSE
IMPORTANT
Science for Ninth Class (Part-3) Biology>Chapter 9 - Model Test Paper 3>SECTION-A>Q 19
If a balloon filled with air and its mouth untied, is released with its mouth in the downward direction, it moves upwards. Why?
HARD
9th CBSE
IMPORTANT
Science for Ninth Class (Part-3) Biology>Chapter 9 - Model Test Paper 3>SECTION-A>Q 19
An unloaded truck weighing 2000 kg has a maximum acceleration of 0.5 m s-2. What is the maximum acceleration when it is carrying a load of 2000 kg? 
HARD
9th CBSE
IMPORTANT
Science for Ninth Class (Part-3) Biology>Chapter 9 - Model Test Paper 3>SECTION-A>Q 20
Describe with a diagram the fluid mosaic organisation of the plasma membrane. 
HARD
9th CBSE
IMPORTANT
Science for Ninth Class (Part-3) Biology>Chapter 9 - Model Test Paper 3>SECTION-A>Q 21
Define muscular tissue. Classify and explain different types of muscles with the help of suitable diagrams. 
MEDIUM
9th CBSE
IMPORTANT
Science for Ninth Class (Part-3) Biology>Chapter 9 - Model Test Paper 3>SECTION-B>Q 22
Bromine and air take about 15 minutes to diffuse completely but bromine diffuses into a vacuum very rapidly. Why is this so?
HARD
9th CBSE
IMPORTANT
Science for Ninth Class (Part-3) Biology>Chapter 9 - Model Test Paper 3>SECTION-B>Q 23
A solid mixture contains four constituents P, Q, R & S. P consists of tiny grains and it is mixed with cement for plastering the walls. Q is a white solid which is recovered on a large scale from sea water by the process of evaporation. R is in the form of tiny particles of a material whose corrosion is called rusting. And S is a white solid which is used in making ordinary dry cells. 
(a) What could P, Q, R & S be? 
(b) How would you separate a mixture containing P, Q, R & S? 
MEDIUM
9th CBSE
IMPORTANT
Science for Ninth Class (Part-3) Biology>Chapter 9 - Model Test Paper 3>SECTION-B>Q 24

A body is moving uniformly in a straight line with a velocity of 5 m/s. Find graphically the distance covered by it in 5 seconds.

MEDIUM
9th CBSE
IMPORTANT
Science for Ninth Class (Part-3) Biology>Chapter 9 - Model Test Paper 3>SECTION-B>Q 25
A moving bicycle comes to rest after sometime if we stop pedalling it. But Newton's first law of motion says that a moving body should continue to move forever, unless some external force acts on it. How do you explain the bicycle case?