STD-10 SOCIAL-SCIENCE CH-12 QUIZ (ENG-MED)
STD-10 SOCIAL-SCIENCE (ENG-MED)
Q 1. Modem age is known as mineral age. Why?
ANS: Requirements of primitive man were limited. He worked only to sustain his life. Man conquered the heights of evolution and technological development. Minerals play a very large role in the human progress. In stone age, man used stones for hunting but now he is traveling into space. The use of minerals has tremendously increased after the industrial revolution.
With time new inventions and developments keep on taking place in all the fields. Every day there is some or the other product coming up in the world. All these inventions and discoveries result in producing products to cater the demand. We use a lot of gadgets, vehicles, services, etc. compared to the past. All these involve use of minerals. Hence, we pan say that modem age is mineral age.
Q 2. Why there is an increase in the usage of non-conventional energy today?
ANS: Coal and mineral oil are conventional but non-renewable sources of energy. This means they are available in limited quantity and will exhaust one day. To overcome this problem, the world started means to conserve them and find out alternative sources of energy. As a result man started making use of alternate sources such as wind energy, solar energy biogas, tidal energy and geothermal energy.
All these are renewable energy resources or say inexhaustible energy resources. Many countries have already started making use of these energy resources. US, Russia, France, Canada, Australia, Netherlands and Japan are advancing in this field effectively. In 1981, India formed ‘Commission for Additional Sources of Energy (CASE) for identifying and using renewable sources of energy. In Gujarat, Gujarat Energy Development Agency (GEDA) is working in this direction.
Q 3. State the major places where iron is available.
ANS: Iron producing states: Karnataka produces maximum amount of iron ore in India. Iron is also obtained from Odisha, Jharkhand, Chhattisgarh and Andhra Pradesh in good quantity. Iron ore is also found in Goa, Rajasthan, Tamil Nadu, Maharashtra, Madhya Pradesh, Kerala, Uttar Pradesh and Assam.
Q 4. Which states in India produces manganese?
ANS: Odisha, Karnataka, Madhya Pradesh and Goa are major manganese producing states. Manganese is also obtained from Andhra Pradesh, Jharkhand, Rajasthan and Gujarat.
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