Explore topic-wise InterviewSolutions in Current Affairs.

Arrange the compounds
of each set in order of reactivity towards S_N2
displacement:

(i)
2-Bromo-2-methylbutane, 1-Bromopentane, 2-Bromopentane

(ii) 1-Bromo-3-methylbutane, 2-Bromo-2-methylbutane,
3-Bromo-2- methylbutane

(iii) 1-Bromobutane, 1-Bromo-2,2-dimethylpropane,
1-Bromo-2-methylbutane, 1-Bromo-3-methylbutane.

The energy level of 4s-orbital is less than 3d-orbital because:

Carnalite is a

The characteristics of fibres is:

Using IUPAC norms write the formulae for following:
(a) Potassium trioxalatoaluminate - (II)
(b) Dichloridobis (ethane - 1, 2 - diamine) cobalt (III)

Compounds P and R upon ozonolysis produce Q and S, respectively. The molecular formula of Q and S is $C_8{H}_{8}O$. Q undergoes Cannizzaro reaction but not haloform reaction, whereas S undergoes haloform reaction but not Cannizzaro reaction.



(i) $P\underset{ii)Zn/H_{2}O}{\overset{i)O_3/C{H}_{2}C{l}_2}{\to }}\underset{\left(C_8{H}_{8}O\right)}{Q}$

(ii) $R\underset{ii)Zn/H_{2}O}{\overset{i)O_3/C{H}_{2}C{l}_2}{\to }}\underset{\left(C_8{H}_{8}O\right)}{S}$



The option(s) with suitable combination of P and R, respectively, is(are):

What is the hybridization of interhalogen compounds of the type $X{X}_3^{\prime }$ (Bent T-shaped)?

Discuss the consequences of high enthalpy of H - H bond in terms of chemical reactivity of dihydrogen.

The density of a 9.5% by mass solution of fructose $\left(C_6{H}_{12}{O}_6\right)$ is $1.036g/c{m}^3$ at 293k. Calculate the osmotic pressure of solution.

Arrange
the following:

(i)
In decreasing order of the pK_bvalues:

C₂H₅NH₂,
C₆H₅NHCH₃,
(C₂H₅)₂NH
and C₆H₅NH₂

(ii)
In increasing order of basic
strength:

C₆H₅NH₂,
C₆H₅N(CH₃)₂,
(C₂H₅)₂NH
and CH₃NH₂

(iii)
In increasing order of basic
strength:

(a) Aniline,
p-nitroaniline
and p-toluidine

(b) C₆H₅NH₂,
C₆H₅NHCH₃,
C₆H₅CH₂NH₂.

(iv)
In decreasing order of basic
strength in gas phase:

C₂H₅NH₂,
(C₂H₅)₂NH,
(C₂H₅)₃N
and NH₃

(v)
In increasing order of boiling
point:

C₂H₅OH,
(CH₃)₂NH,
C₂H₅NH₂

(vi)
In increasing order of solubility
in water:

C₆H₅NH₂,
(C₂H₅)₂NH,
C₂H₅NH₂.

The effective atomic number (EAN) for $\left[Fe\right(CN{)}_6{]}^{3-}$?

Susceptibility of substance at $300K$ is $-0.00002$. Its susceptibility at $600K$ is ,

The percentage dissociation $\left(\alpha \right)$ of $C{H}_{3}COOH$ having dissociation constant $K_a=1.8\times {10}^{-5}M$ is given as $5$%.

Find the inital concentration of $C{H}_{3}COOH$.

Define ionisation enthalpy. Discuss the factors affecting ionisation enthalpy of the elements and its trends in the periodic table.

Which of the following is/are correctly matched, with respect to structural isomerism?

Match the List -I with List -II and select correct answer by using the codes given below the lists.

Calculate the number of $N{O}_2$ molecules in 4 moles of a pure sample of $N{O}_2$ molecules.

Assertion and Reason
In the following questions, a statement of assertion (A) followed by a statement reason (R) is given. Choose the correct answer out of the following choice.
(a) Assertion and reason both are correct statements but reason does not explain assertion.
(b) Assertion and reason both are correct and reason explains asssWon.
(c) Both assertion and reason are Wrong statements.
(d) Assertion is correct statement reason is the wrong statement.
(e) Assertion is wrong statement reason is the correct statement.

Assertion (A) Preservative is added to food items.
Reason (R) Preservatives inhibit the growth of microorganisms.

For the reaction,
$2H_2\left(g\right)+2NO\left(g\right)\to N_2\left(g\right)+2H_{2}O\left(g\right)$
The observed rate expression is, rate $=k_f\left[NO{]}^2\right[H_2]$. The rate expression for the reverse reaction is:

Which one of the following structures represents the neoprene polymer?
(IIT-JEE, 2015)