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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Q. Percentage of nitrogen in the atmosphere of Earth is

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Q. The surface temperature of planet 'Earth' is

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Q. The Polar diameter of planet 'Earth' is

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Q. Magnetic field of Earth protects the planet from effects of

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Q. Powerful magnetic field of Earth was due to its core of

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Q. Orbit distance of planet Earth is

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Q. The only planet in Solar System which is not named to Roman or Greek diety is

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Q. Largest territorial planet of Solar System is

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Q. Considering facts about Earth, the number of notable moons of planet Earth is

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Q. Considering facts about Earth, the orbit period of planet Earth is

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Q. Equatorial diameter of planet Earth is

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Q. The Earth inductor compass is

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Q. The Earth inductor compass was designed in

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Q. Crust of the Earth which carries the land is classified as

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Q. Crust of the Earth which carries water area is classified as

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Q. Types of crust of Earth includes

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Q. Second layer of Earth which comes after the crust of the Earth is known as

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