MCQ
The shape of $XeF^+_3$ is
- ATrigonal planar
- BPyramidal
- CBent $T-$ shape
- DSee-saw

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Statement $I:$ Upon heating a borax bead dipped in cupric sulphate in a luminous flame, the colour of the bead becomes green.
Statement $II:$ The green colour observed is due to the formation of copper(I) metaborate.
In the light of the above statements, choose the most appropriate answer from the options given below :

Assertion : The $pH$ of water increases with increase in temperature.
Reason : The dissociation of water into $H^+$ and $OH^-$ is an exothermic reaction.