German Silver is an alloy of___________?

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Cause of Malaria is ________?

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What are rows in Periodic table called?

A. Period B. Group C. Verticals D. Perpendiculars...

What “Enrico Fermi” invented?

A. X ray machine B. Betatron C. Cyclotron D. Nuclear reactor...

Which of following contains cobalt ?

A: Vitamin K B: Chlorophyll C: Vitamin B12 D: Haemoglobin...

H5N1 virus is caused of

A. AIDs B. fever C. Bird flu D. none...