Explore topic-wise InterviewSolutions in Current Affairs.

Lowering of vapour pressure is highest for

The number of chiral centres and stereoisomers possible for the following compound are respectively

What characteristics do you expect from an electron-deficient hydride with respect to its structure and chemical reactions?

The compound that on reaction with aqueous nitrous acid at low temperature produces an oily nitroso amine is :

Identify the incorrect statements among the following :

Which of the following set of quantum numbers represents the highest energy of an atom?

The reaction $C{H}_{3}CH=C{H}_2\underset{H^{+}}{\overset{(CO+H_2)}{\to }}C{H}_3-CH-C{H}_3|COOH$ is known as

Which of the following reactions is of Deacon’s process?

If 500 calorie of heat energy is added to a system and the system does 350 calorie of work is done on surroundings, what is the energy change of the system?

In astronomical observations, signals observed from the distant stars are generally weak. If the photon detector receives a total of 3.15 × ${10}^{–18}$ J from the radiations of 600 nm, calculate the number of photons received by the detector.

Which of the following is true regarding hybridization and shape of a molecule?

Ethene when treated with $B{r}_2$ the presence of $CC{l}_4$ which compound is formed

$H_{3}C-\underset{C{H}_3}{\underset{|}{\stackrel{C{H}_3}{\stackrel{|}{C}}}}-Br+KOH(Aq.)$$\to H_{3}C-\underset{C{H}_3}{\underset{|}{\stackrel{C{H}_3}{\stackrel{|}{C}}}}-OH+KBr$

above reaction is

If a mixture of $N_2$ and $H_2$ in the ratio 1 : 3 at 50 atmosphere and ${650}^{o}C$ is allowed to react till equilibrium is reached. Ammonia present at equilibrium was at 25 atm pressure. Calculate the equilibrium constant ($K_P$) for the reaction.
$N_{2\left(g\right)}+3H_{2\left(g\right)}\rightleftharpoons 2N{H}_{3\left(g\right)}$

The rate of a first order reaction is $1.8\times {10}^{-3}mol{L}^{-1}mi{n}^{-1},$ when the initial concentration is 0.3 mol $L^{-1}$ . The rate constant in the units of second is

The Solubility $s$ of $AgCl\left(s\right)$ in pure water and in $0.1M$ $NaCl$ at ${25}^{\circ }C$ respectively are:

$K_{sp}\left(AgCl\right)$ = $2.8\times {10}^{-10}$

Calculate the energy of the radiation corresponding to the spectral line of the lowest frequency in Lyman series in the spectrum of H atom. $(R_H=1.09678\times {10}^7{m}^{-1})$

Calculate the weight of iron which will be converted to its oxide by the action of $18\text{g}$ of steam on it when the yield of reaction is 50 %.
$2Fe+3H_{2}O\to F{e}_2{O}_3+3H_2$
(Molar mass = $56\text{g/mol}$)

A metal has a work function of $2.5\times {10}^{-19}$ J. What should be the threshold frequency beyond which if I shine light on the metal, photo electrons will come out?

Ethene when treated with $B{r}_2$ in the presence of $CC{l}_4$, what is formed

What are Sn ar and e1 cb reactions and how to identify or differentiate them from other mechanisms(Sn 1,Sn 2,E1,E2)?

The solution set of the inequality $||x|-1<1-x,2\forall xϵR$ is equal to

Standard electrode potential of three metals A, B and C are -1.5 V, +0.7 V and -3.7 V respectively. The reducing power of these metals will be

The energy of an electron in the first Bohr orbit of H atom is -13.6eV. The possible energy value(s) of the excited state(s) for electrons in Bohr orbits to hydrogen is(are)

For a sucrose solution, elevation in boiling point is ${1.0}^{\circ }C$, then what will be the boiling point of NaCl solution for same molal concentration?

Let A = {1, 2, 3, 4} and R be a relation in A given by R = {(1, 1), (2, 2), (3, 3), (4, 4), (1, 2), (2, 1), (3, 1), (1, 3)}. Then R is

When 9.65 coulombs of electricity is passed through a solution of silver nitrate

(atomic weight of taking as 108) the amount of silver deposited is

[EAMCET 1992; KCET 2000]

The systematic (IUPAC) name of tertiary butyl chloride is:

Which of the following has non – spherical shell of electron?

Which of the following are heterocyclic aromatic compounds?

You probably heard that Faraday was Davy's assistant in his early days. They once had a competition of electrolysis.
The winner is decided by the one who gets higher amount of metal to be deposited. They both passed the same amount of current for the same amount of time.
Faraday used Silver and Davy used Copper. Who won?
(Atomic weight of silver = 108gm, Atomic weight of copper = 63.6 gm)

In the following compounds, the decreasing order of basic strength will be:

The compound that will react most readily with NaOH to form methanol is

Which of the following is acidic in nature?

A compound is formed by cation C and anion A. The anions form hexagonal close packed (hcp) lattice and the cations occupy 75% of octahedral voids. The formula of the compound is:

The order of bond angles in $H_{2}S,N{H}_3,B{F}_{3}andSi{H}_4$ is

The molecular orbital configuration of a diatomic molecule is Its bond order is $\sigma$ 1 $s^2$ ${\sigma }^{+}$ $1s^2$ $\sigma$ $2s^2$ ${\sigma }^{+}$ $2s^2$ $\sigma$ $2p_x^2\{\begin{array}{c}\pi 2p_y^2\\ \pi 2p_z^2\end{array}$ Its bond order is

$2VO+3F{e}_2{O}_3\to 6FeO+V_2{O}_5$ If we start with 2g of VO and 5.75g of $F{e}_2{O}_3$, which is the limiting reagent?

[V = 47.87g] [Fe = 55.85g]

Explain various types of imperfections in solids

The detergent action of soap is due to its

Which one of the following forms an alcohol with nitrous acid solution at 0⁰C

What will be the daughter nuclei after 4 alpha decays of ${}_{91}^{231}Pa$