Why does a star produce its own light and heat?
- Nuclear fission
- Nuclear fusion
- Chemical reaction
- None
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Stars are huge celestial bodies made mostly of hydrogen and helium. Heat and light energy produced by the stars are due to the fusion reaction of hydrogen atoms.
Which article of the Indian Constitution describes it as rigid and flexible?
- Article 332
- Article 368
- Article 300
- Article 312
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Article 368 of the Indian Constitution provides for two types of amendments.
1. By a special majority of Parliament.
2. By a special majority of the Parliament with the ratification by half of the total states.
What type of economy is followed in India?
- Traditional Economy: Economic system based on goods, services, and work, all of which follow certain established trends.
- Command Economy: A dominant centralized authority – usually the government – that controls a significant portion of the economic structure.
- Market Economy: Economic system based on the concept of free markets.
- Mixed Economy: Economic system that combine the characteristics of the market and command economic systems.
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A mixed economic system is a system that combines aspects of both capitalism and socialism. This means that some industries are controlled by private businesses and individuals, while other industries are controlled by the government.
_______ is the study of the behavior of individuals and firms in making decisions such as consumers, resource owners, and firms.
- Macroeconomics
- Neo-classical economics
- Microeconomics
- Monetarist economics
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Microeconomics is the study of the behavior of individuals and firms in making decisions such as consumers, resource owners, and firms.
Who proposed the theory of the expanding universe?
- Georges Lemaitre
- Galileo Galilei
- Edwin Hubble
- Claudius Ptolemy
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American astronomer Edwin Hubble discovered in the 1920s that the Universe is expanding by showing that most galaxies are receding from the Milky Way and the farther away they are, the faster they are receding.
