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Which compounds can show geometrical isomerism ?

Fusion mixture is

Which of the following ions has the highest magnetic moment?

From $200\text{mg}$ of $C{O}_2$, ${10}^{21}$ molecules are removed. How many moles of $C{O}_2$ are left?

Which detergent can cause maximum pollution?

For a reversible adiabatic ideal gas expansion $\frac{dP}{P}$ is equal to:

Resistance of 0.2 M solution of an electrolyte is 50 $\Omega$. The specific conductance of the solution is $1.4S{m}^{-1}.$ The resistance of 0.5 M solution of the same electrolyte is 280 $\Omega$. The molar conductivity of 0.5 M solution of the electrolyte in $S{m}^{2}mo{l}^{-1}$ is:

(IIT-JEE-2014)

For which of the following concentrations , the sparingly soluble salt $CaC{O}_3$ will not precipitate at ${25}^{\circ }C$

Given,

$K_{sp}\left(CaC{O}_3\right)=3.8\times {10}^{-9}$

Nitrogen is obtained by the thermal decomposition of:

Calculate the mass percentage of 15 ppm of chlorofom in water.

$B_2{H}_6.2N{H}_3\underset{{200}^{\circ }C}{\overset{\Delta }{\to }}A+H_2$. A is as follows

The decrease stability of higher oxidation state in p-block with increasing atomic number is due to

The hydration energy of $M{g}^{2+}$ is larger than that of (J1984,1M)

In the given reaction

$C_6{H}_5-C{H}_3\stackrel{}{\to }\frac{air/Mn\left(II\right)/Cu\left(II\right)}{△}\left[X\right]$

[X] is:

$\left(a\right)C_6{H}_5-CHO\left(b\right)C_6{H}_5-COOH$

$\left(c\right)C_6{H}_5-C{H}_{2}OH\left(d\right)C_6{H}_5-OH$

The elevation in the boiling point of one molar aqueous solution of glucose is:

(density = 1.2 g/mL)

The standard heat of formation values of $S{F}_6\left(g\right)$ ,$S\left(g\right)$ and $F\left(g\right)$ are: $-1100,275$ and $80KJmo{l}^{-1}$ respectively. Then the average S - F bond energy in $S{F}_6$ is:

Acetic acid is the principal ingredient in vinegar that's why it tastes sour. At equilibrium. a solution contains $\left[C{H}_{3}C{O}_{2}H\right]=0.0787M$ and $\left[H_3{O}^{+}\right]=\left[C{H}_{3}C{O}_2^{-}\right]=0.00118M.$ what is the values of $K_a$ for acetic acid?

A light of wavelength $\lambda$ falls on a metal having work function $W=hc/{\lambda }_0$. The photoelectric effect will take place only if:

Which of the following variables are sufficient to calculate molality?

The volume of $1.5gm$ atoms of helium gas under standard conditions of temperature and pressure is

In a container equilibrium

$N_2{O}_4\left(g\right)\rightleftharpoons 2N{O}_2\left(g\right)$

is attained at ${25}^{o}C.$ The total equilibrium pressure in container is 380 torr. If equilibrium constant of above equilibrium is 0.667 atm, then degree of dissociation of $N_2{O}_4$ at this temperature will be:

How much sugar will be required if each person on earth is given $100$ molecules of sugar, if the population of earth is taken to be $3\times {10}^{10}$?

Balance the following chemical equation:$\underset{\left(aq\right)}{C{r}_2{O}_7^{-2}}+\underset{\left(aq\right)}{S{O}_3^{-2}}\to \underset{\left(aq\right)}{C{r}^{+3}}+\underset{\left(aq\right)}{S{O}_4^{-2}}$ (Acidic medium)

When ethyl chloride is added to Sodium tert-butoxide, ethyl tert-butyl ether is obtained as the major product (shown below):



When the concentration of ethyl chloride is doubled, the reaction rate:

Freundlich isotherm will be better for modeling

Which of the following will be the product of the given reaction?

The coefficient of volume expansion of a gas is:

The incorrect hydrated radius order is:

Which of the following is more reactive towards addition of $HCl$?

The molar entropies of $HI\left(g\right),H\left(g\right)$ and $I\left(g\right)$ at $298K$ are $206.5,114.6$, and $180.7Jmol{e}^{-1}{K}^{-1}$ respectively. Using the $\Delta G^0$ given below,Calculate the bond energy of HI.

$H\left(g\right)\to H\left(g\right)+I\left(g\right)$; $\Delta G^0=271.8kJ$

Which of the following has maximum root mean square velocity at the same temperature

Cottrell precipitator works on the principle of

For the reaction $2HI\left(g\right)\leftrightharpoons H_2\left(g\right)+I_2\left(g\right),$ the degree of dissociation α of $HI\left(g\right)$ is related to the equilibrium constant $\left(K_p\right)$ by the expression

You are given an Ellingham diagram (deliberately not shown). It is given that for almost all practically achievable temperatures, the $Fe\to F{e}_2{O}_3$ line lies above the $Al\to A{l}_2{O}_3$ line and ${\Delta }_f{G}^{\circ }$ for both $A{l}_2{O}_3$ and $F{e}_2{O}_3$ are negative. Which of the following statements is/are true?

The following alcohol is treated with conc. $H_{2}S{O}_4$, the major product obtained is ?

Which of the following has a bond formed by overlap of $sp-s{p}^3$ hybrid orbitals?

Name the major ester in the following reaction?

An element is represented by ${}_Z{X}^A$, where Z is atomic number which is also equal to number of proton, A is mass number and X is symbol of the element.

Mass number (A) = Number of protons (Z) + Number of neutrons.

Isotopes: Atoms having same number of proton

Isobar: Elements having same mass number

Isotones: Elements having same number of neutron (A-Z)



An isotone of ${}_{40}^{90}Zr$ is _________.

The element with the highest first ionisation potential is

Cs⁺ ions impart violet colour to Bunsen flame. This is due to the fact that the emitted radiations are of

What is the correct IUPAC name of the compound?

$C{H}_2=CH-C{H}_2-C\equiv CH$?

What is the formula for PDI?

Calculate the maximum work done (in $cal$) when pressure on 10 gram of hydrogen is reduced from $20$ to $1atm$ at a constant temperature of $273K$. the gas behave Ideally

Which of the following is correct as the cause of stability of completely filled and Half-filled sub-shells?

In the following reaction:

$C_2{H}_2\underset{333K}{\overset{HgS{O}_4/H_{2}S{O}_4}{\to }}\left(X\right)\rightleftharpoons C{H}_{3}CHO$ What is (X) ?