Which is the heaviest among the following?

• Gold

• Silver

• Iron

• Copper

What is the main purpose of white blood corpuscles?

• to carry nutrients

• to combat infection

• to carry oxygen

• to given strength

The layer where the decrease in temperature with increasing altitude is totally absent is

• Troposphere

• Ionosphere

• Stratosphere

• Mesosphere

At hill stations, the boiling point of water will be

• same as at sea level

• less than that at sea level

• more than that at sea level

• equal to the melting point of ice

Gandhiji's 'Satyagraha' meant an attachment to the following two elements

• Knowledge and religion

• Truth and non-violence

• Truth and chastity

• Love for motherland and hate for colonial masters