Basic General Knowledge
The three abundant elements in the earth's crust are aluminium, oxygen and silicon. The correct order of their abundance is

aluminium, silicon, oxygen
silicon, oxygen, aluminium
oxygen, silicon, aluminium
oxygen, aluminium, silicon

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Basic General Knowledge
Kanishka was

the only ruler of India whose territory extended up to central Asia
All of these
the king of Kushan dynasty
a great conqueror but later became a follower of Buddha

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