Who among the following was the first to make use of artillery in warfare in medieval India?
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What was invented by J. B. Dunlop?
What did J. B. Dunlop invent?
In a majority of flowering plants, out of the four megaspores, what is the ratio of functional and degenerate megaspores?
Which of the following elements has the lowest melting point?
The Chemical formula of Ammonium oxalate is _____.
Which of the following induces nitrogen fixation in soil?
In perfect competition a firm maximizes profit by _____.