Explore topic-wise InterviewSolutions in Current Affairs.

Graph between $\log \left(\frac{x}{m}\right)$ and $\log P$ is a straight line at an angle ${45}^{\circ }$ with intercept on $y$-axis $0.3010$. The amount (in $g$) of the gas absorbed per $g$ of the adsorbent when pressure is $0.2atm$ is:

(Assume that the adsorption obey Freundlich isotherm)

The $d$ electron configuration of $C{r}^{2+},M{n}^{2+},F{e}^{2+}$ and $N{i}^{2+}$ are $3d^4,3d^5,3d^6$ and $3d^8$ respectively. Which one of the following aqua complexes will exhibit the maximum paramagnetic behaviour?

Solvent X boils at 78.5 ^oC and at 82.3 ^oC when nonvolatile solute Y is added to it. What is T_b?

α - helix structure of protein is stabilized by

Which one is a better reducing agent at 983K?

In the conversion of lime stone to lime, $CaC{O}_3\left(s\right)\to CaO\left(s\right)+Ca{O}_2\left(g\right)$ the values of $\Delta H^{\circ }$ and $\Delta S^{\circ }$ are $+179.1kJmo{l}^{-1}$ ad $160.2J{K}^{-1}mo{l}^{-1}$ respectively at $298K$ and $1bar$. Assuming, $\Delta H^{\circ }$ and $\Delta S^{\circ }$ do not change with temperature; temperature above which conversion of lime stone to lime will be spontaneous is

For a reversible adiabatic ideal gas expansion, the value of $\frac{dP}{P}$ is equal to:

A. Phenyl methanamine

B. N,N-Dimethylaniline

C. N-Methyl aniline

D. Benzenamine



Choose the correct order of basic nature of the above amines.

Ionic solids with Schottky defects contain in their structure:

The energy required to remove an electron from the surface of $Na$ metal is 2.3 eV.

What is the largest wavelength of radiation which can show the photoelectric effect:

Consider the following reactions:





Which of the following is/are true regarding the products formed?

The product $C$ in the following reaction is

$C_6{H}_5-N{O}_2\stackrel{Fe/HCl}{⟶}A\underset{273K}{\overset{HN{O}_2}{\to }}B\stackrel{C_6{H}_{5}OH}{\to }C,$

Soft drink bottles and baby feeding bottles are generally made up of

Which of the following mentioned positions in the given compound is more reactive towards electrophilic substitutions?

Nitrates of I group ( except LiNO₃) on heating give:

Pure benzene freezes at 5.45°C at a certain places but a 0.374 m solution of tetrachloroethane In benzene freezes at 3.55°C. The $K_f$ for benzene is

For a gas, the deviation from ideal behavior is maximum at:

let $f_2$ be the frequency of second line of Lyman series and $f_1$ be the frequency of first line of Balmer series, then the frequency of first line of Lyman series is given by,

The wave function of atomic orbital of H-like atoms is given as:
${\psi }_{2s}=\frac{1}{4\sqrt{2}\pi }{Z}^{3/2}(2-Zr)e^{-\frac{Zr}{2}}$
Given that the radius is in $\stackrel{o}{A}$. Then, which of the following will be the radius for nodal surface of $H{e}^{+}$ ion?

Propose structures for hydrocarbons that give the following products on oxidative cleavage by $KMn{O}_4$ or $O_3$:

Calculate the total pressure in a mixture of 8 g of dioxygen and 4 g of dihydrogen confined in a vessel of $1d{m}^3$ at ${27}^{\circ }C.R=0.083bard{m}^3{K}^{-1}mo{l}^{-1}$

The
conductivity of 0.20 M solution of KCl at 298 K is 0.0248 Scm⁻¹.
Calculate its molar conductivity.

1 amu is equal to

A carbonyl compound P, which gives positive iodoform test, undergoes reaction with MeMgBr followed by dehydration to given an olefin Q. Ozonolysis of Q leads to a dicarbonyl compound R, which undergoes intramolecular-aldol reaction to give predominantly S.
$P=\underset{2.H^{+},H_{2}O3.H_{2}S{O}_4/heat}{\overset{1.MeMgBr}{\to }}Q\stackrel{2.O_3/Zn-H_{2}O}{\to }R\underset{heat}{\overset{O{H}^{-}}{\to }}S$

The structure of the product S, is

Lanthanoid elements have

K_f for water is 1.86Kkg/molal. Therefore the freezing point of 0.1M NaCl solution is:

Match the elements of given atomic number with their properties.

Which of the following compounds is soluble in ether?

What are artificial sweetening agents? Given two examples.