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A solid has a structure in which 'W' atom are located at the corners of a cubic lattice 'O' atom at the centre of edge and Na atoms at the centre of cube. The formula for the compound is
Which is not true regarding nylons?
The number of S - S bonds in sulphur trioxide is
The internal energy change when a system goes from state \(A\) to \(B\) is \(40 \mathrm{kJ} / \mathrm{mol}\). If the system goes from \(A\) to \(B\) by a reversible path and returns to state \(A\) by an irreversible path, what would be the net change in internal energy?
Which group of the Periodic Table does not contain only metals?
Which of the following compounds will not undergo Friedel Craft's reaction with benzene?
The carbonate of which of the following cations in insoluble in water ?
One atom of an element X weighs 6.643 × 10-23g . Number of moles of atom in 20 kg is
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