Which of the following methods can be effective for controlling pollution?

What is the molecular formula of ozone?

What is the normal height where ozone gas is present in the atmosphere?

Which among the following programmes can benefit the forests by replenishing tree cover?

Which of the following gases is responsible for green house effect?

The management of forest and wild life is a challenging task. India is losing forests at the rate of more than 1.5 metric hectares each year. The conservation of forests can be done by practising _______.

Biomass is a _______ resource.

Which of the following processes cause(s) the breaking down of rocks?

____, ____ and _______ are the basic types of soils found in India.

_______ is a cheap, non-polluting and labour saving fuel especially for the vast rural population of India.

Which of the following types of soil is sandy and poor in organic content?

Which energy source is used to generate hydro power?

_______ energy of water is converted into hydroelectricity.

Which term is used for the soil made up of clay and rich in iron and aluminium hydroxide?

_______ is the biggest source for generating power in India.

Which type of soil is rich in loam and clay?

Which atmospheric layer is nearest to the earth?

Which soil is made up mainly of clay?

Which gas is most abundant in the atmosphere?

Which of the following energy resources is non-renewable?

Which of the following statements is not true for ozone layer?

Which of the following natural resources is inexhaustible?

Which of the following practices cannot help soil replenishment?

Which of the following materials is/are a non biodegradable waste(s)?

Hydro electric plants use _______ to generate power.