One of the following substances is neither a good conductor of electricity non and insulator .The substances is

• Chromium

• Germanium

• Gallium

• Potassium

Is malleable and ductile best describe

• A solution

• A metal

• A compound

• A non metal

When a mixture of iron powder and sulphur powder is heated strongly to form iron sulphide then heat energy is

• Released

• First absorbed and then released

• Absorbed

• Neither absorbed nor released

On the basis of composition of matter milk is considered to be

• Pure substance

• And impure substance

• An element

• A compound

Which of the following is the homogenous mixture

• Ice

• Wood

• Air

• None

The elements which normally exist in the liquid state are

• Bromine and iodine

• Mercury and chlorine

• Iodine and mercury

• Bromine and mercury

Which of the following is not a metalloid

• Boron

• Silicon

• Gallium

• Germanium

The properties which enable copper metal to be used for making electric wires

• Copper metal is malleable and ductile

• Copper metal is a good conductor of electricity

• Copper metal is ductile and has low electrical resistance

• Copper metal is sonorous and an excellent conductor of electricity

The elements which are sonorous are called

Is sugar and salt are a mixture ( True/False)