Explore topic-wise InterviewSolutions in Current Affairs.

The equilibrium constant for the reaction in aqueous solution
$H_{3}B{O}_3\left(aq\right)+glycerin\left(aq\right)\rightleftharpoons (H_{3}B{O}_3-glycerin)\left(aq\right)is0.90$.
How many moles of glycerin should be added per litre of $0.10M{H}_{3}B{O}_3$ so that $80\%$ of the $H_{3}B{O}_3$ is converted to the boric -acid -glycerin complex?

$Zn$ gives $H_2$ gas with $H_{2}S{O}_4$ and $HCl$ but not with concentrated $HN{O}_3$ because

The enantiomer of $\alpha -D-(+)-$ glucose is ?

The Salt absorption and Oxygen concentration are

At 25⁰ C, the highest osmotic pressure is exhibited by 0.1 M solution of

The density of element X in a bcc lattice is nearly $0.166g/c{m}^3.$ The radius of the atom to the nearest integer is :

Given the molar mass of the compound is 50 g/mol

Take:

$N_A=6\times {10}^{23}$

Classify the following into solids, liquids and gases.

Sugar, milk, oxygen, air filled inside a balloon, oil, salt, and sponge.

At
450 K, K_p=
2.0 × 10¹⁰/bar
for the given reaction at equilibrium.

What
is K_cat
this temperature?

Among the following substituted silanes, the one which will give rise to cross-linked silicone polymer on hydrolysis is:

A light bulb consumes $15\text{W}$ of power. $10\text{W}$ is lost as heat energy. The bulb emits the number of photons per second is $1.26\times {10}^{19}{\text{s}}^{-1}$. The wavelength of the light is (nearly)

$[\text{Use}hc=1240\text{eV nm}]$

The following reaction is described as

A pulse of light in a duration of $50\text{ns}$ is absorbed completely by a small object initially at rest. Power of the pulse is $300\text{mW}$ and the speed of light $3\times {10}^8\text{m/s}$. The change in momentum of the object is

How much oxygen will be obtained by the complete electrolysis of $90\text{kg}$ of water?

$2H_{2}O\to 2H_2+O_2$

Which of the following compound(s) does not show optical isomerism?

$\text{en- Ethylenediamine}\text{bn- Butylenediamine}\text{gly- Gylcinate}$

Arrange in increasing order of dipole moment.

$NaF,NaCl,NaBr,NaI$

Which one of the following has the highest boiling point?

For a compound, the anion (X) crystallizes in hexagonal close packing and cation (Y) occupies only $\frac{1}{3}rd$ of octahedral voids in it, what will be the general formula of the compound?

Find $V_A-V_B$ for the given network ?

Phenol can be distinguished from ethanol by the reactions with ___
(a) $B{r}_2$ /water
(b) Na
(c) neutral $FeC{I}_3$
(d) Both a and c

If 100 ml of $1M{H}_{2}S{O}_4$ solution is mixed with 100 ml of $9.8\%$ (w/w) $H_{2}S{O}_4$ solution ($d=1g/ml$) then:

At ${25}^{\circ }C$, the total pressure of an ideal solution obtained by mixing equimolar A and B is $200\text{torr}$. What is the vapour pressure (in $\text{torr}$) of pure ${}^{\prime }{B}^{\prime }$ at the same temperature (Vapour pressure of pure ${}^{\prime }{A}^{\prime }$ at ${25}^{\circ }C$ is $100\text{torr}$)?

Dihydroxy acetone $\left(C{H}_{2}OHCOC{H}_{2}OH\right)$ has the general formula of carbohydrate but not included in this class because:

In order to coagulate 400 ml of $Fe(OH{)}_3$ sol completely 60 ml of 0.1 M $KCl$ is required. What will be the coagulation power of $KCl$?

Energy of all molecules of a monoatomic gas having a volume V and pressure P $\frac{3}{2}$is . The total translational kinetic energy of all molecules of a diatomic gas as the same volume and pressure is

Identify Z in the reaction sequences.

$C{H}_{3}C{H}_{2}CH=C{H}_2\underset{H_2{O}_2}{\overset{HBr}{\to }}Y\stackrel{C_2{H}_{5}OH}{\to }Z$