STD 11 - 8.1. Organic chemistry Nomenclature of organic compounds — NEET STD 11 Science — Question

Assertion $A :$- Carbon forms two important oxides $- CO$ and $CO _2 . CO$ is neutral whereas $CO _2$ is acidic in nature.

Reason $R :$- $CO _2$ can combine with water in a limited way to form carbonic acid, while $CO$ is sparingly soluble in water.

In the light of the above statements, choose the most appropriate answer from the options given below :-

$Cr _2 O _7^{2-}+ XH ^{+}+6 Fe ^{2+} \rightarrow YCr ^{3+}+6 Fe ^{3+}+ ZH _2 O$

The sum of $X . Y$ and $Z$ is $.......$.

Statement $(I)$ : Both metal and non-metal exist in $\mathrm{p}$ and $d$-block elements.

Statement $(II)$ : Non-metals have higher ionisation enthalpy and higher electronegativity than the metals.

In the light of the above statements, choose the most appropriate answer from the option given below: