Clinical thermometers are made up of glass. The important characteristic(s) considered for this selection is/are
It is a bad conductor of heat
It is transparent
Both A and B
It is strong
Which of the following is suitable to make rain coats ?
Cotton
Plastic
Silk
None of these
Upon heating, solids usually turn into
Liquids
Gases
Mixtures
Melts
Milk and water dissolve in each other. They are
Immiscible liquids
Solvent and solutions
Miscible liquids
Solution and solvent
A vendor sells white powdered salt mixed with white powdered stone. The knowledge of which properly will help you detect this malpractice?
Ductility
Opacity
Density
Solubility
A needle and a knife belong to the same group because
They are transparent
They are hard and magnetic
They float on water
They are poor conductors of heat
Paper bags are preferred over plastic ones because
Plastic bags are light
Paper bags are stronger
Plastic bags are not biodegradable
Paper bags are not biodegradable
Most balloons, tyres and footballs are made of rubber. This is because rubber is
Naturally available
Cheap
An electrical insulator
Soft and flexible
Salt dissolves in water to form salt water. Name the solvent
Salt
Water
Salt-water
Salt and water
The property that we use for classifying things depends on the ______ of the classification.
Grouping
Purpose
Information
System