Questions in solutions

Select	Question
	$20ml$ of $HCl$ solution requires $19.85ml$ of $0.01M\ NaOH$ solution for complete neutralization. The molarity of $HCl$ solution is
	The amount of anhydrous $N{{a}_{2}}C{{O}_{3}}$ present in $250ml$ of $0.25M$ solution is
	How many grams of $C{{H}_{3}}OH$ would to be added to water to prepare 150 ml of solution that is $2.0\,M\,\,C{{H}_{3}}OH$
	The number of moles of oxygen in one litre of air containing 21% oxygen by volume in standard conditions, is
	The mineral atacamite (A) is $\left[ CuC{{l}_{2}}\,.\,xCu{{(OH)}_{2}} \right]\,.45.05\,ml$of 0.5089 M HCl were required to react completely with 1.6320 g of A. Hence x is (mol. wt. A = 427)
	What weight of ferrous ammonium sulphate is needed to prepare $100ml$ of 0.1 normal solution (mol. wt. 392)
	$10ml$ of conc. ${{H}_{2}}S{{O}_{4}}$ (18 molar) is diluted to 1 litre. The approximate strength of dilute acid could be
	How many grams of a dibasic acid (Mol. wt=200) should be present in 100 ml of its aqueous solution to give decinormal strength
	Hydrochloric acid solution A and B have concentration of 0.5 N and 0.1 N respectively. The volumes of solutions A and B required to make 2 litres of 0.2 $N HCl$ are
	What weight of hydrated oxalic acid should be added for complete neutralisaion of $100ml$ of $0.2N-NaOH$ solution