Unit Test I
Class IX
Subject: Science
Timing: 30min
MM: 25
PHYSICS
I. Choose any one correct option for the following questions: -
1. A person travels a distance along the circumference of a circle of radius R. (1)
Displacement of the person is
(A) R
(B) 2Ï€R
(C) 2R
(D) zero
2. The rate of change of displacement with time. (1)
(A) speed
(B) velocity
(C) acceleration
(D) retardation
3. Acceleration is a vector quantity that indicates that its value (1)
(A) Is always negative
(B) is zero
(C) Is always positive
(D) Can be positive, negative, or zero
II. If a rocket-powered sled is accelerated to a speed of 400 m/s in 2 sec, then what is acceleration and what is the distance that the sled travels? (2)
III. Derive the first equation of motion v=u+at by graphical method (3)
CHEMISTRY
I. Choose any one correct option for the following questions: -
1. During summer water kept in the earthen pot becomes cool because of the phenomenon of- (1)
(A) diffusion
(B) transpiration
(C) osmosis
(D) evaporation
2. Which of the following is not a matter? (1)
(A) Vacuum
(B) air
(C) common salt
(D) chalk
3. A few substances arranged in the increasing order of 'force of attraction between their particles. Which of the following represent the correct arrangement? (1)
(A) Water, air, wind
(B) Air, sugar, oil
(C) Oxygen, water, sugar
(D) Salt, juice, air
II. Convert the following temperature to the Celsius Scale (2)
(A) 300 K
(B) 573 K
III. Write three differences between Boiling and Evaporation. (3)
BIOLOGY
I. Choose any one correct option for the following questions: -
1. Who is known as the father of cytology? (1)
(A) Robert Hooke
(B) Robert Brown
(C) A & B both
(D) None of them
2. Term protoplasm was coined out by (1)
(A) Max knoll
(B) Max kom
(C) Purkinje
(D) Landsteiner
3. the Electron microscope was first invented by (1)
(A) Schielden & Schwann
(B) Charles Spencer
(C) Max Knoll & Earnst Ruska
(D) Antony von Leeuwenhoek
4. 70s ribosomes are only present in (1)
(A) Euglena
(B) Amoeba
(C) Fungi
(D) Bacteria
II. What would happen to the life of a cell, if there is no Golgi apparatus? (2)
III. Why does the skin of your finger shrink when you wash clothes for a long time? Explain the process. (3)
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