Q.1

Given below are two groups of materials namely group X and group Y:

Group X - Iron, cobalt and nickel
Group Y - Wood, rubber and stainless steel

On what basis have they been grouped?

Q.2

Given below are a set of phenomena:

1. Folding the paper into an aeroplane.
2. Melting of ice candy.
3. Wet clothes to dry clothes
4. Dissolving sugar in water

What is the basis of the given grouping?

Q.3

Three students gave the following statements during a classroom discussion. This is what they said:

Dhwani: Motion of a vibrating tuning fork exhibits periodic motion.
Neeta: The blades of the fan is said to move in a rotatory motion.
Mahesh: The length of the footsteps is the same for different people.

Which student(s) made incorrect statement(s)?

Q.4

Which of the following will not allow electric current to pass through?

1. Plastic comb
2. Gold earring
3. Silver spoon
4. Wooden box
5. Copper utensil
6. Lime juice

Q.5

Following is a list of few objects. Classify them correctly under the headings shown in the figure below:
1. Clear glass
2. Cement
3. Butter paper
4. Air
5. Frosted glass
6. Bag

Q.6

Spot the principle on which the distillation method works for separating alcohol and water mixture?

Q.7

Identify the missing parts P and Q correctly in the given flow chart:

Fiber → P → Q

Q.8

Which of the following pairs are wrongly classified?

P: Snakes and rats - Stay in burrows deep in the sand
Q: Snow leopard - Long ears to hear movements of predators
R: Mountain goats - Strong hooves for running up the rocky mountain slopes
S: Frogs - Breathe through blowholes located on the upper parts of their heads

Q.9

Manav tried to look at a toy bike with red light through an object but he could only see a faint red light, not the toy bike.
Thus, we can conclude by saying that the object is a ________________.

Q.10

Given below are two groups of substances:

Group 1: Hay, Cow dung, Fruit peel, Twigs
Group 2: Glass, Batteries, Plastic box, Electronic waste

On what basis has these two grouping been done?