EASY
Earn 100

Which of the following substances sink in water?

50% studentsanswered this correctly

Important Questions on Materials

HARD
Science>Chemistry>Materials>Properties of Materials
Iron is denser than water so it sinks in water. But if a boat is made out of the same iron, it floats in water. Why?
EASY
Science>Chemistry>Materials>Properties of Materials

Choose the correct word from the given bracket and fill in the blank.

[soluble, sediment, insoluble]

Sugar is _____ in water.

MEDIUM
Science>Chemistry>Materials>Properties of Materials
A substance has a density of 12.7 kilograms per litre. It will _____ 
EASY
Science>Chemistry>Materials>Properties of Materials
When we push a floating object down in the water it comes up. This force is _____.
EASY
Science>Chemistry>Materials>Properties of Materials
Differentiate between boiling and distillation.
EASY
Science>Chemistry>Materials>Properties of Materials
Which of these is a process of purification of water which kills germs?
HARD
Science>Chemistry>Materials>Properties of Materials
What do you mean by density? How is a knowledge of density useful in finding out if a substance will float or sink in water?
MEDIUM
Science>Chemistry>Materials>Properties of Materials
One kilogram of a solid takes up 2 litres of space. What is its density?
MEDIUM
Science>Chemistry>Materials>Properties of Materials
Describe the different ways by which drinking water can be purified.
HARD
Science>Chemistry>Materials>Properties of Materials
A substance has a density of 10 kilograms per litre. What is the density of 10 litres of this substance?
EASY
Science>Chemistry>Materials>Properties of Materials
Write the names of any four objects which float on water.
EASY
Science>Chemistry>Materials>Properties of Materials
Boiled water is unsafe for drinking.
EASY
Science>Chemistry>Materials>Properties of Materials
Filtration is the safest method of water purification. 
EASY
Science>Chemistry>Materials>Properties of Materials

Insert the names in the list in the correct column in the table. 
Wooden spoon, Steel spoon, plastic spoon, iron hammer, rubber band 

Floats in water Sinks in water
   
   
   
   
   
MEDIUM
Science>Chemistry>Materials>Properties of Materials
Looking at the density of different things, how can we say which of them will float and which ones will sink in water?
EASY
Science>Chemistry>Materials>Properties of Materials
The fast conversion of a liquid to a gas is known as _____.
MEDIUM
Science>Chemistry>Materials>Properties of Materials
What is buoyant force?
MEDIUM
Science>Chemistry>Materials>Properties of Materials
Explain why wood floats on water by comparing their pushing forces.
EASY
Science>Chemistry>Materials>Properties of Materials
The best and safest method of water purification is boiling.
EASY
Science>Chemistry>Materials>Properties of Materials
The settling down of insoluble matter in water is called _____.