Question

Which of the following statement (s) is/are correct?
(1 Point)

A) Outer skeleton of snail is called shell.

B) Cartilages are not found in joints in body.

C) The bones are earthworm are quite delicate.

D) The earthworm moves by alternate extension and contraction of body using bristles.
3Which one of the following statements is correct? Statement 1: Increasing of our body temperature is a reversible change Statement 2: Dissolution of gasses like oxygen and carbon dioxide in water is irreversible changes.
(1 Point)

A) Statement 1

B) Statement 2

C) Both statements are correct
4A mixture contains three different substances X, Y and Z. They are of the same size, cubical in shape and yellow in colour. X particles are very heavy, insoluble, non-magnetic and contribute 50% of the mixture. Y particles are very light, insoluble, non-magnetic and contribute 40% of the mixture. And Z particles are iron pieces. Which of the following methods can separate X, Y and Z?
(1 Point)

A) Winnowing, Magnetic separation

B) Magnetic separation, Winnowing

C) Sieving, Magnetic separation. Filtration

D) Handpicking, Sublimation, Sieving
5Two identical metal balls A and B moving in opposite directions with different speeds hit each other at point X as shown in the figure. Changes will most likely appear in their
1. Shape
2. Speed
3. Direction
4. Volumes
(1 Point)

A) 1 and 3

B) 2 and 3

C) 2 and 4

D) 1, 2 and 3
6A red car covers the distance 200m in 20 seconds and a blue car covers the distance 20 km in 2 minutes. Which car has the greatest speed?
(1 Point)

Red car

blue car

Both have same speed
7Maria made a new puppet using a wooden plank. From the shadow alone what aspect of the new puppet will the audience will be able to find out.
(1 Point)

its colour

its material

its shape

its texture
8When Janvi dances, her hands and legs are moved by a pair of antagonistic muscles. How do antagonistic muscle pairs work?
(1 Point)

Both muscles contract at same time.

One muscle contracts and the other relaxes

Both muscles relaxes at the same time

One muscle is strong and the other is week
9Otter catch fishes and birds for food. Which word describes an otter?
(1 Point)

predator

prey

herbivore

producer
10Shown here is a classification tree. Which of the following can be put in the box marked P
(1 Point)

Iron fillings

sugar powder

chalk powder

magnifying glass
11In a Celcius scale of temperature , the temperature of melting ice is ________ degree Celcius .
(1 Point)

1

0

100

4
12Which one of the following is not a part of the human digestive system?
(1 Point)

Trachea

Stomach

Oesophagus

Rectum
13A base used in baking bread is...
(1 Point)

NaHCO3

CaCO3

NH4OH

all of the above
14Name the process by which heat is transferred by the movement of a liquid ( or gas ) itself.
(1 Point)

Conduction

Convection

Radiation

All of these
15A polished silvery surface is ____________Immersive Reader
(1 Point)

good absorber of heat

good reflector of heat

a poor reflector of heat

all of these

Answer 1

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