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To check the principle of proportions , ...

To check the principle of proportions , a series of pure binary compounds `(P_(m)Q_(n))` were analyzed and their composition is tabulated below . The correct opstion (s) is (are)

A

If empirical formula of compound 3 is `P_(3)Q_(4)` , then the empirical formula of compound 2 is `P_(3)Q_(5)` .

B

If empirical formula of compound 3 is `P_(3)Q_(2)` and atomic weight of element P is 20 , then the atomic weight of Q is 45.

C

If empirical formula of compound 2 is PQ. Then the empirical formula of the compound 1 is `P_(5)Q_(4)`.

D

If atomic weight of P and Q are 70 and 35 , respectively , then the empirical formula of compound 1 is `P_(2)Q`

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