Explore topic-wise InterviewSolutions in Current Affairs.

Choose the correct order of covalent character:

What is the molality of a 1 L solution of $H_2{SO}_4$ which is 46% wt/vol(Density of solution = 1.40 g/cm3)

The edge length of face centered cubic unit cell is $508$ pm. If the radius of the cation is $110$ pm and it occupies the octahedral voids, then the radius of the anion is:

Among unpaired electron is present in

Identify the aromatic compound:

Among the following, which one is not a meta directing group in an electrophilic attack?

Which of the following is the correct order of the first ionisation energy?

In which of the following equilibrium $K_c$ and $K_p$ are not equal?

In the following reaction $\left[Cu\right(H_{2}O{)}_4{]}^{2+}\left(aq\right)+HC{O}_3^{-}\left(aq\right)\rightleftharpoons \left[Cu\right(H_{2}O{)}_{4}O{H}^{-}{]}^{+}\left(aq\right)+H_{2}C{O}_3\left(aq\right)$

species behaving as a bronsted- lowry acid are:

What is
lanthanoid contraction? What are the consequences of lanthanoid

contraction?

Why synthetic progesterone derivates are more potent than progesterone?

The number of quanta of radiations of frequency $4.67\times {10}^{13}{s}^{-1}$ that must be absorbed in order to melt 5 g of ice, if the energy required to melt 1 g of ice is 333 J, is:

Rank the following compounds in the decreasing order of their stability:

Give
IUPAC names of the following ethers:

(i)

(ii)

(iii)

(iv)

(v)

(vi)

The salt which responds to dilute and concentrated $H_{2}S{O}_4$ is

What kind of deficiency results in tooth decay and weak bones?

At a temperature of ${30}^{\circ }C$, the susceptibility of a ferromagnetic material is found to be $x$. its susceptibility at ${333}^{\circ }C$ is

1 g $H_2$ gas as STP is expanded so that volume is doubled. Hence, work done is

Which of the following is/are diastereomer pair(s)?

An unknown organic compound (A) with the molecular formula $C_9{H}_{12}O$ does not decolourize $B{r}_2$ in $CC{l}_4,$ reacts with sodium to give a colourless, odourless gas and can be oxidised by hot alkaline $KMn{O}_4$ to give benzoic acid. Then, following test were performed on the compound (A) is given sequence:
Test (a): The colour of the solution changes from orange to green when $K_{2}C{r}_2{O}_7$ is added to it.
Test (b): The compound can be resolved.
Test (c): No yellow precipitate of $CH{l}_3$ is formed when reacted with $l_2$ and $O{H}^{-}$.
Test (d): Oxidation of the compound with $Cr{O}_3$ in pyridine gives another compound that gives Tollen's test.

Which of the following would not be the structure of compound (A) after test (b)?

What is the wavelength of the light emitted when an electron in a hydrogen atom undergoes transition from the energy level n = 4 to energy level n = 2? What is the colour corresponding to their wavelengths? (Given $R_H=109677c{m}^{-1}$)

A gaseous mixture enclosed in a vessel consists of $1\text{gm mole}$ of a gas $\text{A}$ with $\gamma =5/3$ and another gas $\text{B}$ with $\gamma =7/5$ at a temperature $T$. The gases $\text{A}$ and $\text{B}$ do not react with each other and are assumed to be ideal. Find the number of $\text{gm moles}$ of the gas $\text{B}$ if $\gamma$ for the gaseous mixture is $\frac{19}{13}$.

For a binary system of ideal volatile liquids 1 and 2 , the following graph is obtained :





The total pressure of the solution when mole fraction of component 1 in liquid phase is 0.25 is:

16. The ratio of d values in NaCl crystal is 1:0.707:1.154 how these values are obtained?