Explore topic-wise InterviewSolutions in Current Affairs.

The oxidation of $S{O}_2$ by $O_2$ to $S{O}_3$ is an exothermic reaction. The yield of $S{O}_3$ will be maximum if

Describe the shapes of $B{F}_3$ and $B{H}_4^{-}$ . Assign the hybridisation of boron in these species.

The freezing point of equimolal aqueous solutions will be the highest for:

At STP the density of $CC{l}_4$ vapour in $\text{g/L}$ will be nearest to:

Find out the value of $K_c$ for the given equilibria (i) and (ii) respectively:

$\left(i\right)2NOCl\left(g\right)\rightleftharpoons 2NO\left(g\right)+C{l}_2\left(g\right);K_P=1.8\times {10}^{-2}at500K$

$\left(ii\right)CaC{O}_3\left(s\right)\rightleftharpoons CaO\left(s\right)+C{O}_2\left(g\right);K_p=167at1073K$



($R=0.0831barLmo{l}^{-1}{K}^{-1}$)

Give
plausible explanation for each of the following:

(i)
Why are amines less acidic than
alcohols of comparable molecular masses?

(ii)
Why do primary amines have higher
boiling point than tertiary amines?

(iii)
Why are aliphatic amines stronger
bases than aromatic amines?

The letter 'D' or 'L' before the name of a stereoisomer of a compound indicate the correlation of configuration of that particular stereoisomer.
This refers to their relation with one of the isomers of glyceraldehyde. Predict whether the following compound as 'D' or 'L' configuration.

Isopentane on monochlorination gives four isomeric monochloro derivatives of isopentane. Which product(s) has/have a yield less than 35% in the mixture?

Attempt titrating an amino acid against a weak base and discover the number of dissociating (ionizable) functional groups in the amino acid.

Which among the following species is an ambident nucleophile?

QUESTION 2.10

What role does the molecular interaction play in a solution of alcohol and water?

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 wrong statement.
(e) Assertion is wrong statement reason is correct statement.

Assertion (A) Receptors are crucial to body's communication process.
Reason (R) Receptors are proteins.

Mole fraction of A in $H_{2}O$ is 0.2. The molality of A in $H_{2}O$ is

$C{H}_{3}CN\stackrel{Na+C_2{H}_{5}OH}{⟶}X$

The compound X is:

[MP PMT 1983; BHU 1984]

What are the characteristics of drugs?

At low pressure, if $RT=2\sqrt{a.P}$, then the volume occupied by a real gas is (where $a$ is the van der Waal's gas constant for pressure correction)

Compounds formed, when methyl amine is head with chloroform in the presence of KOH is:

Which is correct order of their tendency of the given elements to form $M^{3-}$ ion$?$

Calculate the drift speed of the electrons when $1\text{A}$ of current exists in a coper wire of cross-section $2{\text{mm}}^2$. The number of free electrons per unit volume is $8.5\times {10}^{22}$.

A hydrocarbon X on treatement with $O_3$ followed by the reduction of ozonide with $Zn-H_2$O gives Y. Y gives both Tollen's test as well as yellow precipitate with $NaOH/I_2$ solution. Which is a possible structure of X?

Which of the following compounds can not be prepared?

At high temperature, Nitrogen combines with $Ca{C}_2$ to give

Give
reasons:

(i) Conc.
HNO₃
can be transported in aluminium container.

(ii) A
mixture of dilute NaOH and aluminium pieces is used to open drain.

(iii)
Graphite is used as lubricant.

(iv)
Diamond is used as an abrasive.

(v)
Aluminium alloys are used to make aircraft body.

(vi)
Aluminium utensils should not be kept in water overnight.

(vii)
Aluminium wire is used to make transmission cables.

A reinforcing steel bar, partially embedded in concrete, is subjected to a tensile force P. The figure that appropriately represents the distribution of the magnitude of bond stress (represented as hatched region), along the embedded length of the bar, is

What is it that draws Derry towards Mr. Lamb in spite of himself?