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Given
below are observations on molar specific heats at room temperature of
some common gases.

The
measured molar specific heats of these gases are markedly different
from those for monatomic gases. Typically, molar specific heat of a
monatomic gas is 2.92 cal/mol K. Explain this difference. What can
you infer from the somewhat larger (than the rest) value for
chlorine?

0.64 g of a gas occupies a volume of 224 ml at STP. The gas could be

In which of the following reactions, standard reaction entropy change $\left(\Delta S^0\right)$ is positive and standard Gibbs's energy change $\left(\Delta G^0\right)$ decreases sharply with increasing temperature?

Which of the following compounds would have the smallest value for $p{K}_a$?

Use the periodic table to answer the following questions.

(a)Identify an element with five electrons in the outer subshell. (b)Identify an element that would tend to lose two electrons.
(c) Identify an element that would tend to gain two electrons.
(d) Identify the group having metalloid, non-metal, liquid as well as gas at the room temperature.

Write
equations of the following reactions:

(i)
Friedel-Crafts reaction−alkylation of anisole.

(ii)
Nitration of anisole.

(iii)
Bromination of anisole in ethanoic acid medium.

(iv)
Friedel-Craft’s acetylation of anisole.

The basic ionisation constant for hydrazine, $N_2{H}_4$ is $9.6\times {10}^{-7}$. What would be the percentage hydrolysis of $0.1M{N}_2{H}_{5}Cl$ ?

$(Given:\sqrt{10.4}\approx 3.2and\sqrt{1.04}=1.013)$

The Van’t Hoff factor for 0.1M $BaC{l}_2$ is 2.74. The percentage dissociation of the salt is

Molar solubility of helium, nitrogen and oxygen are plotted against partial pressure of the gas at constant temperature as given below.

Which of the following is the correct sequence for the Henry's Law constant for the following gases?

A synthetic polymer which resembles natural rubber is:

A tertiary alcohol H upon acid catalysed
dehydration gives a product I. Ozonolysis of I leads to compounds J and K.
Compound J upon reaction with KOH gives benzyl alchhol and a compound L,
whereas K on reaction with KOH gives
only M.

Compound
H is formed by the reactions of:

For the reaction$4N{H}_3\left(g\right)+5O_2\left(g\right)\rightleftharpoons 4NO\left(g\right)+6H_{2}O\left(g\right),$, the expression of $K_c$ will be:

Two moles of a gas at temperature $T$ and volume $V$ are heated to twice its volume at constant pressure. If $\frac{C_P}{C_V}=\gamma$ then increase in internal energy of the gas is

The important use of the reaction between potassium cyanide and haloalkane is that...

Toluene on heating with succinic anhydride in the presence of anhydrous followed by reduction with Zn - Hg/Con. HCl gives a product which on heating with thionyl chloride followed by heating with anhydrous $AlC{l}_3$ in $C{S}_2$ gives major product (A), so, the product (A) is:

Thermal decomposition of a compound follows first order kinetics. If $50$% of the compound decomposes in $120$ minutes. How much compound will decompose in $360min$?

What is the transition temperature of $\alpha$ and $\beta$-sulphur?

What
is meant by hybridisation of atomic orbitals? Describe the shapes of
sp, sp²,
sp³
hybrid orbitals.

The electrolytic reduction of nitrobenzene in strongly acidic medium produces :

In an FCC arrangement of A and B atoms, where A atoms are at the corners of the unit cell, B atoms at the face centers, two atoms are missing from two corners in each unit cell, then the simplest formula of a compound is

Explain
why

(a) Two bodies at different temperatures T₁
and T₂
if brought in thermal contact do not necessarily settle to the mean
temperature (T₁
+ T₂)/2.

(b) The coolant in a chemical or a nuclear plant (i.e., the liquid
used to prevent the different parts of a plant from getting too hot)
should have high specific heat.

(c) Air
pressure in a car tyre increases during driving.

(d) The climate of a harbour town is more temperate than that of a
town in a desert at the same latitude.

The ratio of the wavelengths of last lines of Balmer and Lyman series is:

The following sequence of reactions

the end product (C) is:

Which of the following will readily give a hydrocarbon?

The correct statement(s) for othoboric acid is/are