Chemistry NCERT Exemplar Solutions Class 12th Chapter Seven

Aromaticity drives the highest enolic percentage of given structure:

P₄ + 3NaOH + 3H₂O   $\underset{}{\overset{}{\to }}P{H}_3+3Na{H}_{2}P{O}_2$

Oxoacid is H₃PO₂ it is also known as hypophosphorous acid or phosphinic acid.

Due to common ion effect solubility of AgCl will decreases in KCl, AgCl and AgNO₃ but in deionized water, no common ion effect will takes place so maximum solubility.

(a) Sucrose  → α-D glucose and β-D fructose

(b) Lactose  → β-D- galactose and β-D glucose

(c) maltose  → α-D glucose and α-D-glucose

Consider the following image

It does not contains 2^nd most abundant element by weight in earth crust because that is Si Calgon

$\underset{}{\overset{Watersoluble}{\to }}2N{a}^{+}{\left[N{a}_4{\left(P{O}_3\right)}_6\right]}^{2-}$

$\underset{}{\overset{C{a}^{2+}}{\to }}2N{a}^{+}{\left[N{a}_{2}Ca{\left(P{O}_3\right)}_6\right]}^{2-}$

Ceric ammonium nitrate is used to test alcohol while CHCl₃/alc. KOH is used to test 1° amine

Due to common ion effect solubility of AgCl will decreases in KCl, AgCl and AgNO₃ but in deionized water, no common ion effect will takes place so maximum solubility.

Phenolphtalein is a pH dependant indicator. It is a weak acid which is colourless in acidic medium but gives pink colour in basic medium. The pink colour is due to its conjugate form. Phenolphthalein dissociates in basic medium. Therefore, assertion is true but reason is false.

$\underset{\left(Colourless\right)}{HPh\left(aq.\right)}?H^{+}+\underset{\left(Pink\right)}{P{h}^{-}}$