Hydrolysis of Cyanides

Q. CHOCHO (glyoxal) react with 50% NaOH solution to give what as product

Q. 69 Hydrocarbon (A), C6H10 on treatment with H2/Ni, H2/Lindlar catalyst and Na/liquid NH3 forms three different reduction products (B), (C) and (D) respectively. (A) does not form any salt with ammoniacal AgNO3 solution but forms a salt (E) on jeating with NanH2 in an inert solvent. Compund (E) reacts with Ch3I to give (F). Compund (D) on oxidation ozonolysis gives n-butanoic acid along with other products. Give structures (A) to (F) with proper reasoning.

Q. 25.when 1-butyne undergoes oxymercuration with the help of HgSO4+H2SO4, the product (s) formed are A)CH3CH2COOH+HCOOH B)CH3CH2COÇH3 C)CH3CH2CH2COOH D)CH3CH2CH2CHO

Q. Hydrolysis of CH_3COONa increases when it is mixed with the solution of-1)CH_3COOH, 2)NaOH, 3)HCl, 4)NH_4OH .

Q.

tert-Butyl alcohol, when heated with $H_{2}S{O}_4$, gives an alkene. Which of the following sequence will convert the alkene to 3-methylbutanoic acid?

1 - $H_3{O}^{+},$ hydrolysis

2 – treatment with $C{N}^{-}$

3 – $HBr,$ peroxide

1. 3; 2; 1

2. 2; 1; 3

3. 3; 1; 2

4. 1; 2; 3

Q. $n-Propylchloride\stackrel{alcKCN}{\to }\left(P\right)\stackrel{H_3{O}^{+}}{\to }\left(Q\right)$
Which statement is not true about the compounds P and Q?

1. P on reduction gives butanamine
2. Q is butanoic acid
3. Q on decarboxylation gives propane
4. P is propanenitrile

Q. Let $f\left(x\right)$ be a non-positive continuous function and $F\left(x\right)=\underset{0}{\overset{x}{\int }}f\left(t\right)dt\forall x\ge 0$ and $f\left(x\right)\ge cF\left(x\right)$ where $c>0$ and let $g:[0,\infty )\to R$ be a function such that $\frac{dg\left(x\right)}{dx}<g\left(x\right)\forall x>0$ and $g\left(0\right)=0.$
The solution set of inequality $g\left(x\right)({\cos }^{-1}x-{\sin }^{-1}x)\le 0$

1. $[-1,\frac{1}{\sqrt{2}}]$
2. $[\frac{1}{\sqrt{2}},1]$
3. $[0,\frac{1}{\sqrt{2}}]$
4. $(0,\frac{1}{\sqrt{2}}]$

Q. The equation of a curve passing through $(1,0)$ for which the product of the abscissa of a point $P$ and the intercept made by a normal at $P$ on the $x$-axis equals twice the square of the distance of the point $P$ from the origin $O$, is

1. $x^2+y^2=x^4$
2. $x^2+y^2=2x^4$
3. $x^2+y^2=4x^4$
4. $x^2+y^2=8x^4$

Q. Acetylene can be obtained by the electrolysis of:

1. potassium maleate
2. potassium succinate
3. potassium acetate
4. potassium formate

Q. Water is drained from a vertical cylindrical tank by opening a valve at the base of the tank. It is known that the rate at which the water level drops is proportional to the square root of water depth $y$, where the constant of proportionality $k>0$ depends on the acceleration due to gravity and the geometry of the hole. If $t$ is measured in minutes and $k=\frac{1}{15}$, then the time to drain the tank if the water is $4\text{m}$ deep to start with is

1. $30\text{min}$
2. $45\text{min}$
3. $60\text{min}$
4. $80\text{min}$

Q. $C{H}_3-CH{I}_2\stackrel{KCN}{\to }\underset{\Delta }{\overset{H_{2}O/H^{+}}{\to }}?$
The end product will be:

1. 2-cyanopropionic acid
2. Ethane-1, 1-dicarboxylic acid
3. 2-methylethanoic acid
4. Propionic acid

Q. The end product B in the sequence of reactions $R-X\stackrel{C{N}^{-}}{\to }A\stackrel{NaOH}{\to }B$ is

1. An alkane

2. A carboxylic acid

3. Sodium salt of carboxylic acid

4. A ketone

Q. What happens when hexa-2, 4-diene is treated with 2 mol O₃?

Q. If the independent variable $x$ is changed to $y$, then the differential equation $x\frac{d^{2}y}{d{x}^2}+{\left(\frac{dy}{dx}\right)}^3-\left(\frac{dy}{dx}\right)=0$ is changed to $x\frac{d^{2}x}{d{y}^2}+{\left(\frac{dx}{dy}\right)}^2=k$ where $k$ equals