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Physics
A nucleus of mass number 220, initially at rest, emits an -particle . If the Q value of the reaction is 5.5 MeV, the energy of the emitted -particle will be (a)4.8 MeV (b)5.4 MeV (c)6.0 MeV (d)6.8 MeV
Chemistry
It required 0.70 g of a hydrocarbon A to react completely with Br₂(2.0 g). On treatment of A with HBr, it yielded monobromo alkane B. The same compound B was obtained when A was treated with HBr in the presence of peroxide. Write down the structural formulae of A and B and explain the reactions involved.
Mathematics
If a > 0, b> 0

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