Solutions Test ...

Volume occupied by one molecule of water (density = 1 $$gcm^{-3}$$) is:

The mass of glucose required to prepare $$50mL$$ of its $$\dfrac{M}{9}$$ aqueous solution is

21.6 g of silver coin is dissolved in $${ HNO }_{ 3 }$$. When $$NaCl$$ is added to this solution, all silver is precipitated as $$AgCl$$. The weight of $$AgCl$$ is found 14.35 g then, calculate % of silver in coin.

Among the following, the substance with greater lowering of vapour pressure is

The mass of $$CaO$$ obtained by heating 200 kg of limestone $$ ( CaCO_3) $$ which is 95% pure is: 

The ratio of lowering of vapour pressure of 0.1M aquous solutions of $$KCl, CuSO_4$$ and $$Na_2SO_4$$ is:

Mass of one atom is $$6.66\times 10^{-23}$$  g.  It percentage in an hydride is 95.24.  Thus hydride is 

A substance has 16$$\%$$ by mass of Sulphur and 4$$\%$$ by mass of Oxygen. Calculate minimum molar mass of the substance.

$$6g$$ of an organic compound containing oxygen is heated with graphite and carbon monoxide formed is quantitative with converted to $$8.8g$$ of $$CO_2$$ a reaction with $$I_2O_5.$$ The percentage of oxygen in the compound is:

The total number of ions persent in 1 $$  \mathrm{mL}  $$ of 0.1 $$  \mathrm{M}  $$ barium nitrate$$ Ba(NO _{3} )_{2}$$  solution is:-