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
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
Kerosene floats on water because
Kerosene has more density
Kerosene has less energy
Densities of water and kerosene and equal
Water has more density
Of our total body weight, about two thirds is made up of water and it is important to have a regular intake of water. This is because
Water has lots of vitamins and proteins
Water can dissolve a lot of substances
Water conducts heat very fast and there by maintains the body temperature
Water is stored as energy in our body
Salt water is a
Good conductor of electricity
Bad conductor of electricity
Insulator
All the above
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
A mirror is
Opaque
Transparent
Tanslucent
None
Most of the metals:
Are hard
Have luster
Are good conductors of electricity
All of these
Which of the following material is hard, opaque and shines when freshly cut ?
Rubber
Wood
Tin
Plastic
