Which of the following type of bodies form sharp shadows when placed in the path of light ?
Transparent
Translucent
Transparent and transluent
Opaque
Metals can be drawn into thin wires. This property is called
Ductility
Elasticity
Volatility
Malleability
Identify the amorphous substance from the following
Sugar
Clay
Salt
Iron
The most essential property of a substance to be used as cooking vessel is
Conductance of heat
Conductance of electricity
Conductance of cold
Most balloons, tyres and footballs are made of rubber. This is because rubber is
Naturally available
Cheap
An electrical insulator
Soft and flexible
A solid is said to be crystalline when
It possesses a definite geometrical shape
It has no definite shape
It has definite colour
It has no definite colour
Pick out the crystalline substance from the following
Coal
Wax
Salt dissolves in water to form salt water. Name the solvent
Water
Salt-water
Salt and water
Which instrument is used to measure the density of liquid?
Hydrometer
Hygrometer
Density meter
Ammeter
Pure water is a _______ conductor of electricity
Good
Bad
Semi
Partially
