Explore topic-wise InterviewSolutions in Current Affairs.

The solubility of $Ca{F}_2(K_{sp}=3.4\times {10}^{-11})$ in $0.1M$ solution of $NaF$ would be:

The most common type of reaction in aromatic compounds is?

Many organic substances are negatively charged Eg. Acetic acid, while others are positively charged eg. Ammonium ion. An amino acid under certain conditions would have both positive and negative charges simultaneously in the same molecule. Such a form of amino acid is called,

The calculation of packing fraction is useful to get an idea of which of the following?

Stability order of the following compounds is:

gives

On descending the group of which lead is a member, the

Antioxidants are added to food:

Which is a polymer of three different monomers?

Formula to calculate bond disassociate energy?

The correct order of the oxidizing power of Cl₂, Br₂, I₂ and O₂ is:

Which among the following reactions does not yield an amine ?

A ns orbital with odd 'n' has _____ number of nodes.

Consider the following reaction and indentify (P).

A solution containing 2.675 g of $CoC{l}_3.6N{H}_3$ (Molar mass = 267.5 g/mol) is passed through a cation exchanger. The chloride ions obtained in the solution is treated with an excess of $AgN{O}_3$ to give 4.78 g of $AgCl$ (Molar mass = 143.5 g/mol). The formula of the complex is:
(Atomic mass of Ag = 108 u)

Which of the following is the most correct electron displacement for a nucleophilic reaction to take place ?

What are the condition that we should take in to account while finding the different order,(increasing or decreasing) of solubility of amine compounds?

Which of the following represent the correct electronic configuration of $O_2$?

Which of the among the following is more acidic?

Aqueous solutions of $HN{O}_3,KOH,C{H}_{3}COOHandC{H}_{3}COONa$ of identical concentrations are provided. The pair(s) of solutions which from a buffer upon mixing is(are)

What is the volume of co2 at 1atm and 300k whose no of moles is 0.05?usually how to find volume of gases not in STP?

3.0 molal of NaOH solution a density of 1.110g/ml.the molarity of the solution is??????

Nitrogen exists as diatomic molecule and phosphorus as $P_4$ why?

Cations are present in the interstitial sites in ...........

(a) Frenkel defect (b) Schottky defect

(c) vacancy defect (d) metal deficiency defect

Arrange the following type of radiations in increasing order of frequency: (a) radiation from microwave oven (b) amber light from traffic signal (c) radiation from FM radio (d) cosmic rays from outer space and (e) X-rays.

A gas phase reaction $R\to A+B+C+D$ follows first order kinetics. The initial pressure was $x_o$, the pressure after 10 minutes was $y$. The correct expression for the rate constant $k$ is :

Given the bond energies $N\equiv N$, $H-H$ and $N-H$ bonds are $945,436$ and $391kJmol{e}^{-1}$ respectively, the enthalpy of the following reaction $N_2\left(g\right)+3H_2\left(g\right)\to 2N{H}_3\left(g\right)$ is

Comment on the statement that "Colloid is not a substance but a state of substance".

Which compound is formed when an excess of $KCN$ is added to an aqueous solution of copper sulphate?

Three isotopes of an element have mass number m, (m+1) and (m+2) .if the mass number is (m+0.5) then which of the following ratios may be accepted for m, (m+1),(m+2) in that order

Arrange in decreasing order of boiling point $H_{2}S,H_{2}O,H_{2}Se,H_{2}Te$

Which of the following series is arranged in order of increasing ionic radius ?

What is sp2 and sp3 hybridization

In a potentiometer circuit, two wires of same material of resistivity , $\rho$ one of radius of cross-section a and other of radius of cross-section 2a are joined in series. They are of length l and 2l respectively. This combination act as potentiometer wire of length 3l. The emf of the cell in primary circuit is E and internal resistance is $\frac{\rho l}{2\pi a^2}$. This cell is connected to the potentiometer wire by a conducting wire of negligible resistance with positive terminal of the cell connected to one end (call it A) of longer wire.

The maximum voltage which can be balanced on the potentiometer wire is

For which of the following two pairs, the angle of contact is same?

When the electrons of a sample of hydrogen atoms jump from the 4th orbit to the ground state, the maximum number of spectral lines observed is:

Which of the following electrolyte will have maximum flocculation value for $Fe(OH{)}_3$ sol?

What iz the cause of diagonal relationship between elements of 2nd and 3rd periods?

An aqueous pink solution of cobalt(II) chloride to deep blue on addition of excess of HCL. This is because ..........
(a) $\left[Co\right(H_{2}O{)}_6{]}^{2+}$ is transformed into $[CoC{l}_6{]}^{4-}$
(b) $\left[Co\right(H_{2}O{)}_6{]}^{2+}$ is transformed into $[CoC{l}_4{]}^{2-}$
(c) tetrahedral complexes have smaller crystal field splitting than octahedral complexes
(d) tetrahedral complexes have larger crystal field splitting than octahedral complex.

At what temperature is the velocity of sound double than that at $0^{\circ }C$?

The quantum numbers of six electrons are given below. Arrange them in order of increasing energies. If any of these combination(s) has/have the same energy lists:
1. n = 4, l = 2, ml = –2 , ms = –1/2
2. n = 3, l = 2, ml= 1 , ms = +1/2
3. n = 4, l = 1, ml = 0 , ms = +1/2
4. n = 3, l = 2, ml = –2 , ms = –1/2
5. n = 3, l = 1, ml = –1 , ms= +1/2
6. n = 4, l = 1, ml = 0 , ms = +1/2