Gallium arsenide
Gallium
Silicon
None of these
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- March 1969
- Dec 1970
- Dec 1971
- None of these
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- Lithosphere
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- 1 year
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- Rajiv Gandhi
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- Makes the food difficult to digest
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- 1908
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- Etymology
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- Ali Makhdum Hujwari
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- 02
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- 8
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- 1980
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- Khyber pass
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