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Eka-aluminium and Eka -silicon are known as :
A. gallium and germanium
B. aluminium and silicon
C. iron and sulphur
D. manganese and magnesium

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Detailed Solution

The correct answer is: A. gallium and germanium

Explanation:

Eka-aluminium and Eka-silicon were the names given by Mendeleev in his Periodic Table for elements he predicted but were undiscovered at that time.
Later, these elements were discovered and named Gallium (Eka-aluminium) and Germanium (Eka-silicon).

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