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Different animals have been placed into two separate groups X and Y. Identify the basis of placing them separately.


AGroup X members are active during the day and group Y members are active at night.
BGroup X members are animal eating and group Y members are plant eating.
CGroup X members live in open area and group Y members always live in cages.
DGroup X members are pet animals while group Y members are wild animals.

Why do some animals hibernate in the winter?

A To find food for their young ones
B To cope up with environmental changes
C To attract a mate
D To avoid predators

Refer to the given flow chart and select the correct statement regarding W-Z.


AW can be tetanus or mumps while X can be polio or common cold.
BZ can be measles or pneumonia while Y can be dengue or malaria.
CX can be common cold or chickenpox while Z can be amoebic dysentery or ringworm.
DW can be cholera or citrus canker while Y can be malaria or chikungunya.

Pooja places a black plastic tape over the leaf as Leaf covered with tape shown in the given figure. She expected that the plant would die after a few days but it did not because _____.


A Food prepared by the roots is carried to the leaves through the stem
B Water reaches the leaves from the roots through the stem
C Food can be carried from the other leaves to the leaf covered with tape through the root
D Both (B) and (C)

Given below are names of few items.
(i) Window pane, (ii) Tracing paper, (iii) Butter paper, (iv) Frosted glass (v) Clear cellophane sheet
How many of them allow(s) light to pass through it/them completely?

A1 only
B2 only
C3 only
D4 only

Refer to the given Venn diagram and select the correct option regarding it.

Gita is facing a wall with a microphone (O) between her and the wall. She begins to clap and microphone detects two sounds. The distance between her and the microphone is 200 m and the distance between her and the wall is 500 m. What is the time interval between both the sounds, if the speed of sound is 330 m/s?


A1.51 s
B0.909 s
C1.81 s
D0.303 s

Block P of weight 10 N rests on an inclined plane of slope angle 30° as shown in the given figure. A flexible cord attached to it passes over a frictionless pulley and is connected to the block Q of weight W. What would be the weight W for which the system is in equilibrium?


A5 N
B20 N
C10 N
D50 N

Refer to the given figure and select the correct option regarding it.

AThis process results in formation of soil over the course of 10-20 years.
BThis process is called frost weathering.
CThe soil resulting from this process gets fertile gradually by addition of humus.
DThis process can cause flood.