Which of the following statements are co...

Which of the following statements are correct in the case of heavy water?

Heavy water is used as a moderator in nuclear reactor

Heavy water is used as a tracer for studying reaction mechanisms

Heavy water has lower boiling point than ordinary water

Enthalpy of vaporisation of heavy water is more than that of ordinary water

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The correct Answer is:

A, B, D

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Which of the following statements is correct?

Aluminium chloride `(AlCl_3)` is a Lewis acid because it can donate electrons

All the Al-Cl bonds in `Al_2Cl_6` are equivalent

Aluminium exists in two polymorphic forms, namely, `alpha - Al_2O_3 and gamma - Al_2O_3`

Anhydrous aluminium chloride can be prepared by heating hydrated salt

`CO_2` has linear whereas `SO_2` has nonlinear structures

`CO_2` has nonlinear whereas `SO_2` has linear structures

Both `SO_2` and `CO_2` has linear structures

Both `SO_2` and `CO_2` has non-linear structures

Slag is carefully chosen to combine with the flux present in the ore to produce easily fusible gangue to carry away the impurities.

Gangues are carefully chosen to combine with the slag present in the ore to produce easily fusible flux to carry away the impurities.

Gangues are carefully chosen to combine with flux present in the ore to produce easily fusible slagt carry away the impurities.

Fluxes are carefully chosen to combine with the gangue present in the ore to produce easily fusiblesla to carry away the impurities.