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Read the given passage carefully.
When air blows gently, it is called X . When air blows with great force, it is called Y. When wind blows very fast with thunder and lightning, it is called Z .
Select the option which correctly identifies X, Y and Z.

Refer to the given picture representing seed dispersal of three different plants.

Which of the following could be Z?

ABalsam
BDandelion
CHiptage
DCoconut

A sonic 'tape measure' is used to measure the length of a room. It measures a time interval of 0.060 s between transmitting a sound pulse and receiving the echo. The speed of sound in air is 330 m/s. How far is the reflecting wall from the 'tape measure'?

A5.5 m
B9.9 m
C11 m
D20 m

Refer to the given paragraph. Identify X and select the correct option. X is a long, soft plant fibre that can be spun into coarse and strong threads. It is a rainy season crop, which grows best in alluvial soil.

AJute
BCotton
CSilk
DLilin

Count the number of triangles in the given figure.


A20
B16
C22
DNone of these

Two positions of a dice are shown below. When number 3 is at the top, which number will be at the bottom?


A 1
B 2
C 5
D 6

The position-time graph of a particle of mass 40 g is shown here. Which of the following statement is true about the graph?



(a) The particle receives an impulse of 8 x 10^–4 kg m s^–1 after every 1 s.
(b) The particle receives an impulse of 8 x 10^–4 kg m s^–1 after every 2 s.
(c) The particle receives an impulse of 4 x 10^–4 kg m s^–1 after every 1 s.
(d) The particle receives an impulse of 4 x 10^–4 kg m s^–1 after every 2 s.

How many number of primary consumers are represented in the given food web?


AFour
BSix
CTwo
DThree

Which example is correct for the appropriate use of a scientific tool?

AA scale can be used to measure the length of pond snails.
BA graduated cylinder can be used to collect pond snails.
CA ruler can be used to measure the mass of pond snails.
DA microscope can be used to measure the weight of a pond snail.

Observe the 3-D shapes and relative sizes of the two objects as shown. How will the shadow look like when the ring and object Z are placed between the light source and the screen as illustrated ?


A
B
C
D