$0.16 \ g$ of a dibasic acid required $25 \ mL$ of decinormal $NaOH$ solution for complete neutralization. The molecular weight of the acid is

The number of molecules in $100 \, mL$ of $0.02 \, N$ $H_2SO_4$ is .....

$20 \, mL$ of a $1 \, N$ solution of $KMnO_4$ just reacts with $20 \, mL$ of a solution of oxalic acid. The weight of oxalic acid crystals in $1 \, L$ of the solution is $... \, g$

The conversion of oxygen to ozone occurs to the extent of $15\%$ only. The mass of ozone that can be prepared from $67.2 \ L$ of oxygen at $1 \ atm$ and $273 \ K$ will be ............ $g$.

One third litre of $x \ M \ K_2Cr_2O_7$ is required to completely oxidise $2 \ L$ of $0.1 \ M$ ferrous ammonium sulphate in acidic medium. What is $x$?

An average person needs about $10000 \ kJ$ energy per day. The amount of glucose (molar mass $= 180.0 \ g \ mol^{-1}$) needed to meet this energy requirement is $..... \ g$.
(Nearest integer)
(Use : $\Delta_{c} H(\text{glucose}) = -2700 \ kJ \ mol^{-1}$)