science

Diamond is an ______ substance.

• Opaque

• Translucent

• Transparent

• Softest

A material which is capable of scratching another material is called,

• Soft

• Hard

• Smooth

• Soluble

Most of the gases are_______ in water.

• Soluble

• Insoluble

• None of these

Water is universal,

• Solute

• Solvent

• Solution

• All the above

The liquids which dissolve in water are called,

• Immiscible liquids

• Miscible liquids

• Both of these

• None of the above

A special kind of shine present on materials or shine appears when they are freshly cut or sand papered,

• Soluble

• Lustre

• Hard

• None of these

Which is the most essential property of a substance to be used as a cooking vessel?

• Good conductor of heat

• Ductility

• Malleability

• All the above

A mirror is,

• Flexible

• Transparent

• Opaque

• Translucent

Sridhar brought an object. It is made of hard material. It is fragile(easy to break) and allows light to pass through it. What can the object be?

• Mirror

• Fish tank

• Shoes

• Cricket bat

Which of the characteristics given below are of metals,

a) They are hard

b)They have lustre

c) They are good conductors of electricity

• a and b

• a, b and c

• b and c

• b and c