Question 1 :
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 2 :
$Y$ molal solution of a compound in benzene has mole fraction of solute equal to $0.2$. The value of ?
Question 3 :
The sum of mole fractions of solute and solvent of a solution is equal to:
Question 4 :
Which of the following are homogenous in nature ?<br>(i) Ice<br>(ii) Wood<br>(iii) Soil<br>(iv) Air
Question 5 :
The number of components in a binary solution are/is _______ .
Question 7 :
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 8 :
If we take 44g of${ CO }_{ 2 }$and 14g of${ N }_{ 2 }$ , what will be themole fraction of${ CO }_{ 2 }$in the mixture?
Question 9 :
The mole fraction of solute in a solution is 0.3 . The mole percent of solvent is:
Question 10 :
The sum of mole fractions of solute and solvent of a solution is equal to:
Question 11 :
The mole fraction of solute in 10% (w/w) aqueous NaOH solution is:
Question 12 :
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 13 :
One litre of a sample of hard water (d =$1$ g/mL) contains $136$ mg of $CaSO_{4}$ and $190$ mg of $MgCl_{2}$.What is the total hardness of water in terms of $CaCO_{3}$?
Question 14 :
How much $BaCl_{2}$ would be needed to make $250\ ml$ of a solution having the same concentration of $Cl^{-}$ as one containing $3.78\, g\, NaCl$ per $100\ ml$? <br/>$\left(Ba=137\right)$<br/>
Question 15 :
Hydrogen gas adsorbed on surface of platinum is an example of solid in gas solution.
Question 16 :
One litre hard water contains $1$ mg $\displaystyle CaCl_{2}$ and $1$ mg $\displaystyle MgSO_{4}$. The hardness of water is:
Question 17 :
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 18 :
$5.5\ mg$ of nitrogen gas dissolves in $180\ g$ of water at $273\ K$ and one atm pressure due to nitrogen gas. The mole fraction of nitrogen in $180\ g$ of water at $5\ atm$ nitrogen pressure is approximately :
Question 19 :
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
