Question 1 :
The mole fraction of solute in 10% (w/w) aqueous NaOH solution is:
Question 2 :
One kilogram of sea water sample contains $6\ mg$ of dissolved $O_{2}$. The concentration of $O_{2}$ in the sample in ppm is:
Question 3 :
The mole fraction of solute in a solution is 0.3 . The mole percent of solvent is:
Question 4 :
If we take 44g of${ CO }_{ 2 }$and 14g of${ N }_{ 2 }$ , what will be themole fraction of${ CO }_{ 2 }$in the mixture?
Question 6 :
The sum of mole fractions of solute and solvent of a solution is equal to:
Question 7 :
The sum of mole fractions of solute and solvent of a solution is equal to:
Question 8 :
$Y$ molal solution of a compound in benzene has mole fraction of solute equal to $0.2$. The value of ?
Question 9 :
Which of the following are homogenous in nature ?<br>(i) Ice<br>(ii) Wood<br>(iii) Soil<br>(iv) Air
Question 10 :
An ideal gaseous mixture of ethane and ethene occupy $28L$ as STP. The mixture required $128g$ ${O}_{2}$ combustion, ,mole fraction of ethene in the mixture is:
Question 11 :
In a glass we are having half filled water. Then we are continuously adding salt to the water and salt is getting dissolved into water. But a state occur when water is not able to dissolve salt. Then the solution is called as<b></b>
Question 12 :
The number of components in a binary solution are/is _______ .
Question 13 :
Molality of a solution in aqueous medium is $0.8$. Calculate its mole fraction and the percentage by mass of solute if molar mass of solute is $60.$
Question 14 :
Assertion (A): On increasing the temperature,the milli-moles of solute, milli-equivalent ofsolute,molality, mole fraction of solute and % by weightdoes not change.<br>Reason (R): Each of these involves only weightsof solute and solvent.<br>
Question 16 :
Hydrogen gas adsorbed on surface of platinum is an example of solid in gas solution.
Question 17 :
The mole fraction of the solute in the $12$ molal solution of $Na_2CO_3$ is :<br/>
Question 18 :
A sample of oleum is labelled as $112\%$. In $200\ g$ of this sample, $18\ g$ water is added, The resulting solution will contain
Question 19 :
The hardness of water sample which contains $0.001$ mol $ MgSO_{4}$ per litre of water is:<br/>
Question 20 :
In $200\ g$ of a sample of olem labelled as $109.0\% ,\ 12\ g$ water is added. The new labelling of the oleum sample is
