NEET 2018 Question Paper Mock Test

The difference between amylose and amylopectin is:

A mixture of $2.3\text{g}$ formic acid and $4.5\text{g}$ oxalic acid is treated with conc. ${\text{H}}_2{\text{SO}}_4$. The evolved gaseous mixture is passed through $\text{KOH}$ pellets. Weight (in g) of the remaining product at STP will be:

Which of the following oxides is most acidic in nature?

Which oxide of nitrogen is not a common pollutant introduced into the atmosphere both due to natural and human activity?

The compound $A$ on treatment with $\text{Na}$ gives $B$, and with ${\text{PCl}}_5$ gives $C$. $B$ and $C$ react together to give diethyl ether. $A,B$ and $C$ are in the order: