Pure substance and mixture - class-VI

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Question 1 of 25

In which of the following compounds resonance does not occur
(i) ${H _2}O$
(ii) $Si{O _2}$
(iii) $S{O _3}$
(iv) $C{O _2}$

Select Your Answer:

Both (i) and (iv)

Both (i) and (ii)

Both(iii) and (iv)

(i),(ii)and(iv)

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