Explore topic-wise InterviewSolutions in Current Affairs.

Which of the following species contains equal number of $\sigma$ and $\pi$ bonds?

Zn | Zn2+ (C1) || Zn2+ (C2) | Zn. For this cell G is negative if

Which of the following acid has the highest $K_a$ value?

If $\frac{P}{P_c}=x$ (reduced pressure), $\frac{V}{V_c}=y$ (reduced volume) and $\frac{T}{T_c}=z$ (reduced temperature), then,

The ionization constant of Ammonium hydroxide is $1.77\times {10}^{-5}$ at 298 K. It is hydrolysis constant is

The
three stable isotopes of neon:
and

have
respective abundances of 90.51%, 0.27% and 9.22%. The atomic masses
of the three isotopes are 19.99 u, 20.99 u and 21.99 u, respectively.
Obtain the average atomic mass of neon.

Notice the words in bold in the following sentence.

“The fire boy shovelled charcoal into the maw of the furnace with a great deal of clatter”. This is a phrase that is used in the specific context of an iron plant.

Pick out other such phrases and words from the story that are peculiar to the terminology of ironworks.

What will be the major product for the following reaction?

Find the value of x for which the product of the follwing matrices equals an identity matrix.

$\left(\begin{array}{ccc}2& 0& 7\\ 0& 1& 0\\ 1& -2& 1\end{array}\right]\times \left(\begin{array}{ccc}-x& 14x& 7x\\ 0& 1& 0\\ x& -4x& -2x\end{array}\right]$

The reaction in which hydrocarbons combine with oxygen to form carbon dioxide and water along with heat and light is known as

Which of the following halides does not exist?

An electron of a stationary hydrogen atom makes a transition from the fifth energy level to the ground level. The velocity that the atom acquired as a result of photon emission will be ($m$ is the mass of the electron, $R$ is the Rydberg constant and $h$ is the Planck's constant)

Which chemistry applies scientific principles, techniques, and methods for the investigation of crime?

Magnetic moment 2.83 BM is given by which of the following ions?
(At. nos. Ti = 22, Cr = 24, Mn = 25, Ni = 28)

The standard reduction potentials for $Z{n}^{2+}/Zn,N{i}^{2+}/Ni$ and $F{e}^{2+}/Fe$ are $-0.74V,-0.22V\text{and}-0.44V$ respectively. The reaction

$X+Y^{2+}⟶X^{2+}+Y$

will be spontaneous when

Which of the following has the highest percentage of enol form in Keto-enol equilibrium?

Which one of the following is not a conjugate acid-base pair?

For the chemical equilibrium : $2N{O}_{\left(g\right)}+O_{2\left(g\right)}\rightleftharpoons 2N{O}_{2\left(g\right)}$

$K_P=1.3\times {10}^{-2}$ at $1000\text{K}$. What is the value of $K_C$ at $1000\text{K}$?

The solution containing $3g$ of an organic compound per litre of the solution shows an osmotic pressure of $0.6atm$ at ${127}^{\circ }C$. Calculate the molecular mass of the compound

The value of the energy for the first excited state of hydrogen atom will be

Identify (A) in the following reaction sequence:

Which of the following describes the correct relation for $pOH$ for an aqueous salt solution of weak acid and weak base at ${25}^{\circ }C?$

An aqueous solution contains $0.10M{H}_{2}S$ and $0.20MHCl$. If the equilibrium constants for the formation $H{S}^{-}$ from $H_{2}S$ is $1.0\times {10}^{-7}$ and that of $S^{2-}$ from ions $H{S}^{-}$ is $1.2\times {10}^{-13}$ then the concentration of $S^{2-}$ ions in aqueous solution is:

Packing efficiency in a unit cell is never 100% because constituent particles are assumed to be:

$n_1$ and $n_2$ moles of two ideal gases (mol. wt. $M_1$ and $M_2$) respectively at temperature $T_1$K and $T_2$K are mixed. Assuming that no loss of energy, the temperature of mixture becomes