Question 2 :
Iso-electric point of alanine is (pH = $6$). At which pH, maximum concentration of zwitter ion of alanine will be present?

Question 3 :
When chlorine is passed over dry slaked lime at room temperature, the main reaction product is:

Question 4 :
The $pH$ of a buffer solution containing equal molar concentration of a week base and its chloride ($K_{b}$ for weak base $=2\times 10^{-5}$) is :

Question 5 :
One mole of ammonia was completely absorbed in one litre solution each of<br/>I. $1\ M\ HCl$<br/>II. $1 \ M\ CH_3COOH$&#160;<br/>III. $1\ M\ H_2SO_4$ at $298$ K<br/>The decreasing order for the $pH$ of the resulting solution is:(Given: $K_b (NH_3) = 4.74$)

Question 6 :
When ethyl alcohol is heated with a paste of bleaching powder, we get a compound in which the function of bleaching powder is:&#160;

Question 7 :
The first and second dissociation constants of an acid $H_{2}A$ are $1.0\times 10^{-5}$ and $5.0\times 10^{-10}$ respectively. The overall dissociation constant of the acid will be:

Question 8 :
$\dfrac{N}{10}$ acetic acid was titrated with $\dfrac{N}{10}$ $NaOH$. when 25%, 50% and 75% of titration is over then the $pH$ of the solution will be (respectively):&#160;$[K_a = 10^5]$&#160;

Question 9 :
Substance $X$:<br/>(I) reacts with $H_2S$ to produce white turbidity.<br/>(II) changes light green solution of $FeSO_4$ into yellow colour.<br/>(III) reacts with moisture to give pungent smelling gas.<br/>Hence $X$ is:

Question 10 :
The $pH$ of $0.1M$ solution of the following salts increases in the order:

Question 11 :
Which one of the following solutions will have the highest pH value?

Question 13 :
The more commonly used baking powder contains about 30% $NaHCO_3$, 20% $NaAl(SO_4)_2$, 10% $Ca(H_2PO_4)_2$ and 40% starch. Which of the following statements are correct?<br/>

Question 14 :
$NaHCO_{3}$ can be used on its own to make cakes or bread. Baking powder is more commonly used, and contains $NaHCO_{3}$, $Ca(H_{2}PO_{4})_{2}$ and starch. An improved combination baking powder contains about 40% starch, 30% $NaHCO_{3}$&#160;20% $NaAl(SO_{4})_{2}$ and 10% $Ca(H_{2}PO_{4})_{2}.$&#160;Answer the following questions based on above study.<br/>Rise in bread and cakes is due to______ when it decomposes between $50^{o}C$ and $100^{o}C$.&#160;

Question 15 :
$1.0$ ml of a solution of $HCl$ with a $pH$ of $4.0$ is added it to $9.0$ ml of distilled water, the $pH$ of the final solution will be:

Question 17 :
The indicator constant for an acidic indicator , HIn is $ 5 \times 10^{-6}&#160; M $. this indicator appears only in the colour of acidic from when $ \frac { [In^- ] }{ [HIn]} \le \frac {1}{20} $ and it appears only in the colour of basic form when $ \frac { [HIn]}{[In^-]} \le \frac {1}{40} . $ the pH range of indicator is:

Question 18 :
The $pH$ of $HCl$ is 1. $1.10\ ml$ of this solution is reacted with $40\ ml$ of $NaOH$ solution whose $pH=12$. The $pH$ of resulting solution is:&#160;$(\log(1.2)=0.108)$<br/>

Question 19 :
$NaHCO_{3}$ can be used on its own to make cakes or bread. Baking powder is more commonly used, and contains $NaHCO_{3}$, $Ca(H_{2}PO_{4})_{2}$ and starch. An improved combination baking powder contains about 40% starch, 30% $NaHCO_{3}$&#160;20% $NaAl(SO_{4})_{2}$ and 10% $Ca(H_{2}PO_{4})_{2}$Answer the following questions based on above study.<br/><br/>In improved baking powder, $NaAl(SO_{4})_{2}$ is used for :

Question 20 :
$1\ cc$ of $0.1N$ $HCl$ is added to $1$ litre solution of sodium chloride. The $pH$ of the resulting solution will be: