A student appears for tests I, II and III. The student is successful if he passes either in tests I and II or tests I and III. The probabilities of the student passing in tests I, II and III are p, q and 1/2 respectively. If the probability that the student is successful is 1/2. Then

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#Question id: 19644

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When acetylene is treated with HBr, the product is ———-

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#Question id: 19645

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The dihedral angle in the staggered conformation of C2H6 is

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#Question id: 19646

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Bond length of (I) ethane, (II) ethene, (III) acetylene and (IV) benzene follows the order:

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#Question id: 19647

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Which of the following participate in the sulphonation of benzene?

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#Question id: 19648

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Which one of the following is not an isomer of 3-Methylbut-1-yne?

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#Question id: 19649

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Which of the following can be used as the halide component of a Friedel craft reaction?