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Given below are figures of four types of forces. Match the images with their corresponding descriptions and choose the correct option.

(1) This force pulls everything towards the Earth.
(2) This force opposes motion between two surfaces.
(3) This force is generated by muscle action.
(4) This force helps an object return to its original shape after being deformed.

A a-3, b-4, c-2, d-1
B a-2, b-1, c-4, d-3
C a-4, b-3, c-1, d-2
D a-4, b-3, c-1, d-2

Refer to the given figures showing joints labelled as W, X, Y and Z. Descriptions of these joints are given. One of the descriptions about these joints is incorrect. Identify the incorrect description and select the statement that accurately corrects the mistake.

W : Found in the elbow and knee, allows movement in only one direction.
X : Found in the shoulder and hip, enables movement in all directions.
Y : Located between the first two vertebrae, allows head to turn sideways.
Z : Present in the wrist and ankle, permits only back-and-forth motion.

A Z : Present in the wrist and ankle, allows both back-and-forth and side-to-side movement.
B X : Found in the shoulder and hip, does not allow movement in all directions.
C W : Found in the elbow and knee, movement is not strictly limited to one direction.
D Y : Located between the first two vertebrae, allows the head to rotate fully.

Read the following statements.
(I) Stars appear to move from east to west.
(II) The solar system consists of eight planets and is a host of asteroids, comets and meteors.
(III) The earth revolves around the sun in an elliptical orbit.
(IV) Pluto is also a planet.
Which of the given statement(s) is/are correct?

A I and III only
B II and III only
C I only
D II and IV only

Which of the following options will complete the pattern in the given figure?

A
B
C
D

Refer to the given flow chart and select the correct option regarding it.

A company is designing outdoor sleeping bags for a camping trip. Refer to the graph below showing the properties of different materials. Which material would be most suitable for a sleeping bag that needs to retain body heat, be fire-resistant, and not absorb water?


A W
B X
C Y
D Z

Priyanka took a destarched potted plant and set-up an experiment as shown in the figure. She left the plant in sunlight for few hours and then tested the leaves X and Y for starch. Leaf X did not give starch test while leaf Y showed presence of starch.

What is proved by this experiment?

A Chlorophyll is necessary for photosynthesis.
B Carbon dioxide is necessary for photosynthesis.
C Sunlight is necessary for photosynthesis.
D Oxygen is given out during photosynthesis.

The clouds can be described as

Atiny drops of water floating in air.
Cparticles of water vapour.
Bmixture of dust and water vapour.
Drain drops in air.

By which process the water in a lake ultimately return to the oceans or seas?

AThrough evaporation and precipitation
BBy freezing and melting
CBy condensation and infiltration
DThrough filtration and purification

Select the incorrect statement about seed dispersal.

A Coconut seeds are dispersed by water.
B Cotton seeds are dispersed by animals.
C Pea pods disperse seeds by explosion.
D Maple seeds are dispersed by wind.