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The value of $\gamma =$ $\frac{C_p}{C_v}$ for hydrogen, helium and another ideal diatomic gas X, are respectively equal to:

Which one of the following orders is correct against the property given in each case?

Calculate total number of atoms present in 98 g of $H_{2}S{O}_4$ ?

Let a sea water sample contains $8\times {10}^{-2}$ g of dissolved oxygen per kilogram. What is the concentration of oxygen in parts per billion?

Sucrose (can Sugaro) is a disaccharide. One molecule of sucrose on hydrolysis gives............ .
(a) 2 molecules of glucose
(b) 2 molecules of glucose + 1 molecule of fructose
(c) 1 molecule of clucose + 1 molecule of fructose
(d) 2 molecules of fructose

The kinetic energy of an electron is $4.55\times {10}^{-25}J$.The mass of electron is $9.1x{10}^{-31}\mathrm{kg}$ .The velocity of the electron is .

Iron exhibits bcc structure at room temperature. Above ${900}^{o}C$, it transforms to fcc structure. The ratio of density of iron at room temperature to that at ${900}^{o}C$ (assuming molar mass and atomic radii of iron remains constant with temperature) is:

Can't we calculate the number of neutrons in an atom if we only know it's atomic number but not the atomic mass? (we do not have any other resources to determine this, only we have the option to do it theoretically)

IUPAC name of [Cr(NH₃)₆]Cl₃ is:

What is the product of the following reaction?

$\text{Hex-3-ynal}\underset{\text{(iii)}Mg/\text{ether}\text{(iv)}C{O}_2/H_3{O}^{+}}{\overset{\text{(i)}NaB{H}_4\text{(ii)}PB{r}_3}{\to }}$

State Henry’s law. Why do gases always tend to be less soluble in liquids as the temperature is raised?

OR

State Raoult’s law for the solution containing volatile components. Write two differences between an ideal solution and a non-ideal solution.

Molarity of H2SO4 is 18 M. It's density is 1.8g/cm^{​​​​​3}, hence molality is?

The unit of rate constant for a zero order reaction is:

$BaS{O}_4$ and carbon on heating reacts to produces:

The standard reduction potential data at ${25}^{\circ }C$ is given below.

$E^{\circ }\left(F{e}^{3+}/F{e}^{2+}\right)=0.77V;E^{\circ }\left(F{e}^{2+}/Fe\right)=-0.44V;E^{\circ }\left(C{u}^{2+}/Cu\right)=0.34V;E^{\circ }\left(C{u}^{+}/Cu\right)=+0.52V;E^{\circ }\left(O_2\right(g)+4H^{+}+4e^{-})\to 2H_{2}O=+1.23V;E^{\circ }\left(O_2\right(g)+2H_{2}O+4e^{-})\to 4O{H}^{-}=+0.40V{E}^{\circ }\left(C{r}^{3+}/Cr\right)=-0.74V;E^{\circ }\left(C{r}^{2+}/Cr\right)=+0.91V$

Match $E^{\circ }$ of the rebox pair in Column I with the values given in Column II and select the correct answer using the code given below the lists.

$\begin{array}{cc}ColumnI& ColumnII\\ P.E^{\circ }\left(F{e}^{3+}/Fe\right)& 1.-0.18V\\ Q.E^{\circ }(4H_{2}O\rightleftharpoons 4H^{+}+4O{H}^{-})& 2.-0.4V\\ R.E^{\circ }(C{u}^{2+}+Cu\to 2C{u}^{+})& 3.-0.04V\\ S.E^{\circ }\left(C{r}^{3+}/C{r}^{2+}\right)& 4.-0.83V\end{array}$

Polymerisation of ethene to poly - ethene is represented by the equation
$n(C{H}_2=C{H}_2)\to (-C{H}_2-C{H}_2-{)}_n$
Given that average enthalpies of C = C and C - C bonds at 298 K are 590 and 331 kJ $mo{l}^{-1}$ respectively, predict the enthalpy change when 56g of ethene changes to polyethylene.

Describe
the preparation of potassium dichromate from iron chromite ore.

What is
the effect of increasing pH on a solution of potassium dichromate?

The heat of combustion of ethylene at ${18}^{\circ }C$ and at constant volume is -335.8 K cal when water is obtained in liquid state. What is the heat of combustion at constant pressure and at ${18}^{\circ }C$.

For oxidizing alcohols, several oxidants – each with a multivalent central atom as the active species – can be used. When Chromic acid, with Cr as the multivalent atom is used, how many bonds to oxygen atoms does each central multivalent atom have just before and immediately after the oxidation respectively?

At ${100}^{\circ }C$ the vapour pressure of a solution of 6.5 g of a solute in 100 g water is 732 mm. If $K_b=0.52$, the boiling point of this solution will be

For
the reaction R →
P, the concentration of a reactant changes from 0.03 M to 0.02 M in
25 minutes. Calculate the average rate of reaction using units of
time both in minutes and seconds.

The dipole moments of $CC{l}_4,CHC{l}_3$ and $C{H}_4$ are in the order:

Consider the following
species:

N^3–,
O^2–, F^–, Na⁺, Mg²⁺
and Al³⁺

(a) What is common in
them?

(b) Arrange them in
the order of increasing ionic radii.

How do we give an organic compound it's iupac name