Explore topic-wise InterviewSolutions in Current Affairs.

What is the advantage of using antihistamines over antacids in the treatment of acidity?

The kinetic energy of an electron is $4.55\times {10}^{-25}J$. Calculate the de Broglie wavelength for the same.
$h=6.6\times {10}^{-34}Js,\text{mass of electron}=9.1\times {10}^{-31}kg$

Markovnikov’s rule:

Alkenes undergo electrophilic addition reactions. They are triggered by the acid acting as an electrophile toward the π-electrons of the double bond.

Markovnikov’s rule states that when an unsymmetrically substituted alkene reacts with a hydrogen halide, the hydrogen atom adds to the carbon that has a greater number of hydrogens, e.g.,


Which given substrate is the most reactive toward Markovnikov’s addition?

The Reaction Quotient (Q) for the reaction $N_2\left(g\right)+3H_2\left(g\right)\rightleftharpoons 2N{H}_3\left(g\right)$ is given by $Q=\frac{[N{H}_3{]}^2}{\left[N_2\right][H_2{]}^3}$, the reaction will shift in forward direction if :

An aqueous solution containing 1g of urea boils at ${100.25}^{\circ }C$. The aqueous solution containing 3g of glucose in the same volume will boil at:

Which of the following pairs of reactants will go undergo a displacement reaction?
(correct answer +1, wrong answer -0.25)

Determine the heat energy needed to increase the temperature of 10.0 mol of mercury by 7.5 K. The value of heat capacity for given amount of mercury is $27.8kJ{K}^{-1}$

The number of electron pairs (ep) in $Cl{F}_3$ is

Is it that for both E1 and E2 mechanisms order of reactivity is

3^o​​​​ > 2^o > 1^o​​​ carbocation

In Wheat stones network P = 2 $\Omega$, Q = 2 $\Omega$ , R = 2$\Omega$ and S = 3 $\Omega$ . The resistance with which S is to shunted in order that the bridge may be balanced is

Which of the following on treatment with 50% aq. NaOH yields the corresponding acid and alcohol?

Consider the disproportionation of Iodine to iodide and iodate ions. Using Oxidation method calculate the ratio of iodate and iodide ions formed in alkaline medium :

$I_2\to I{O}_3^{-}+I^{-}$

What are the factors which influence the adsorption of a gas on a solid?

Anisole is less reactive than phenol towards electrophilic substitution reactions. Why ?

An organic compound 'X' gives brisk effervescence with NaHCO₃ and also reduces Tollen's reagent. 'X' is

Which of the compounds with molecular formula $C_5{H}_{10}$ yields acetone on ozonolysis

Hg₂Cl₂ (s) + SnCl₄ (aq) → 2HgCl₂ (aq) +SnCl₂(aq)
​​ Removal of
electropositive element
How is this an oxidation reaction? And which element is oxidized? Please explain this reaction step by step.

Which of the following is not a metalloid?

The process by which an artificial kidney works is known as ___.

For a given solution pH=6.9 at 60^.c where K_w=10^-12.The solution is

A)Acidic. B)Basic. C)Neutral. D)Unpredictable

X, Y and Z in the following reaction sequence are

The above reaction proceeds through

Formula to find electronegativity of elements

The IUPAC name of the compound is:

Which of the followings are Lewis acids? $H_{2}O,B{F}_3,H^{+}$, and $N{H}_4^{+}$

Q8) An element having atomic mass 60 has FCC unit cells .the edge length of the unit cell is 400pm .find the density of the element

Of the following transition in $H$-atom, the one which gives an absorption line of maximum wavelength is:

Which reaction will occur at the fastest rate?

Transition elements exhibit higher enthalpies of atomization due to

pH of 0.1 M weak acid solution is 4. What is the dissociation constant of the acid ?

Osmotic pressure of a solution containing 0.1 mole of solute per litre at 273K is (in atm)

Alkyl groups directly attached to the positively charged carbon stabilize the carbocations due to:

A drop of solution 'X' is placed on a strip of pH paper. A deep red colour is produced. The solution 'X' is:

Match List I with List II and select the correct answer using the codes given below the lists :

Which of the following orders is correct for the bond dissociation energy of $O_2^{+},O_2,O_2^{-}$ and $O_2^{2-}$?

Which of the following reactions is favoured by increase of temperature ?

Which one of the following will form an electrovalent bond ?

1) P and Cl 3) H and Ca 4) H and S

2) NH₃ and BF₃

Relation between I effect and stability