Identify the amorphous substance from the following
Sugar
Clay
Salt
Iron
Opaque objects
Reflect most of the light falling on them
Transmit most of the light falling on them
Absorb most of the light falling on them
Are strong and hard
Upon heating, solids usually turn into
Liquids
Gases
Mixtures
Melts
Kerosene floats on water because
Kerosene has more density
Kerosene has less energy
Densities of water and kerosene and equal
Water has more density
Equal volumes of different substances:
Have equal weights
Have equal densities
Need not have equal weights
None of these
By dropping a drop of water on a glowing electric blub, it bursts. This is because glass is a
Good conductor of heat
Bad conductor of heat
Transparent substance
Good conductor of electricity
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
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
Clay is used for making pots and bricks because it is
Opaque
Non magnetic
A good conductor of heat
Easily moulded into different shapes
Salt water is a
Bad conductor of electricity
Insulator
All the above
