Q. Avicenna died in

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Q. Persian polymath, Avicenna, was born in

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Q. World's first long range ballistic missile'V-2 Rocket' was invented in

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Q. The 'White dwarf' collapse into

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Q. Theory which states that black hole is formed when sufficient compact mass can deform space time is known as

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Q. The region outside the event horizon of rotating black holes is classified as

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Q. A region in the black hole of infinite space-time is classified as

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Q. The interpretation of solution of theory of general relativity was published by

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Q. Theory of general relativity was developed by

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Q. The defined region of gravitational pull from which not even a single particle can escape is classified as

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Q. In the black hole, the volume of singular region is

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Q. The most primitive bodies in the solar system are

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Q. The name of the tails of the comets are

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Q. Orbits of the comets are

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Q. The closest point to the Sun in the orbit of comet is known as

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Q. Main body of a space 'comet' is called

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Q. Which is not the part of greenhouse gases

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Q. Percentage of oxygen in the atmosphere of Earth is

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Q. Second most abundant constituent of dry air in terms of volume after nitrogen is

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Q. Most abundant constituent of dry air in terms of volume is

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