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.
________ implies that sustainable development should take a holistic approach towards notions of progress and give equal importance to non-economic aspects of wellbeing.
- National Happiness Index
- Psychological Wellbeing Index
- Living Standards Index
- Community Vitality Index
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Gross National Happiness (GNH), sometimes called Gross Domestic Happiness (GDH), it provides a way for the country to understand and enact progress based on the society's value of happiness.
Indian constitutional amendment procedure is:
- Rigid
- Flexible
- Rigid as well as Flexible
- None
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Indian constitution is more flexible than rigid. For example, most of its provisions can be amended by a two-thirds majority in the parliament. However, in order to amend some of the provisions like the election of the president, powers and functions, the extent of Centre-State relations, etc. apart from two-thirds majority in both houses of the parliament, the bill must be passed by at least half of the total state legislatures.
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.
Which theory explains the origin of the universe?
- Geocentric Model
- Heliocentricity
- Big Bang Theory
- Pulsating Theory
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The Big Bang was 13.8 billion years ago when the universe began as a tiny, dense, fireball that exploded.
