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$\left(C{H}_{3}CHO\right)+N{H}_{2}OH\to$ $X\to -H_{2}O$ Y

The number of σ bonds, π bonds and lone pairs of electrons in the compounds 'y' are respectively

The process of exchange between adsorbed ions and ions in solution is known as

KP for the reaction $N_2+3H_2\leftrightharpoons 2N{H}_3$ at ${400}^{\circ }C$ is $1.64\times {10}^{-4}$. Calculate $K_c$.

$HC\equiv CH\underset{Dil{H}_{2}S{O}_4}{\overset{HgS{O}_4}{\to }}A\underset{H_{2}O}{\overset{C{H}_{3}MgBr}{\to }}B\stackrel{P+B{r}_2}{\to }C.$ In this reaction 'C' is

Colemanite is

Strength of acidity is in order:

The amphoteric hydroxide is

Ethanol boils at ${78.4}^{o}C$ and the enthalpy of vaporisation of ethanol is $42.4kJmo{l}^{-1}.$ Calculate the entropy of vaporisation of ethanol.

Orbital angular momentum for a d - electron is

Solubility of an ionic compound in water is mainly dependent on:
a. Lattice enthalpy
b. Hydration enthalpy
Both these factors oppose each other, and the resultant of these factors determines the solubility of an ionic compound in water. If the lattice enthalpy has a larger value, the compound is less soluble. If the hydration enthalpy has larger value, the compound is highly soluble in water.

Which of the following is less soluble in water?

Give two requirements for vapour phase refining.

In electrolytic reduction of a nitroarene with 50% current efficiency, 20.50 g of the compound is reduced by $2\times 96500$ C of electric charge. The molar mass of the compound is :

I studied in BYJU'S that rickets is in children. Osteomalacia is in adults. But my teacher said that rickets is in children but osteoporosis is in adults. Which one was right

One litre of saturated solution of $CaC{O}_3$ is evaporated to dryness due to which 7.0 mg of residue is left. The solubility product for $CaC{O}_3$ is:

A physical parameter a can be determined by measuring the parameters b, c, d and e using the relation $a=\frac{b^{\alpha }{c}^{\beta }}{d^{\gamma }{e}^{\delta }}$. If the maximum errors in the measurement of b, c, d and e are $b_1\%,c_1\%,d_1\%$ and $e_1\%$ then find the maximum error in the value of a determined by the experiment.

In the oil drop experimant, charge on electron came out to be $-1.6\times {10}^{-19}\text{C}$. From Thomson's experiment, $e/m$ value for electron calculated was $1.758820\times {10}^{11}\text{C/kg}$. Find the mass of the electron.
(Given: $e$ is the magnitude of charge on electron)

The number of times an electron goes around the first Bohr orbit in a second is

Two mole of an ideal gas isn heated at constant pressure of oe atmosphere from ${27}^{\circ }C$ to ${127}^{\circ }C$. If $C_{v,m}=20+{10}^{-2}TJ{K}^{-1}mo{l}^{-1}$, then $q$ and $\Delta U$ for the process are respectively.

A certain oxide of iron contains 2.5 g of oxygen for every 7.0 g of iron. If it is regarded as mixture of FeO and $F{e}_2{O}_3$ in the weight ratio x : y, what is x : y, (atomic weight of iron = 56)

Which of the following is major product of following reaction?

Identify the correct statements regarding the structure of $Al(B{H}_4{)}_3$
(1) ‘Al’ is $s{p}^3{d}^2$ and ‘B’ is $s{p}^3$ hybridized (2) It has 6 $3C-2e^{-}$ bonds
(3) It has 6 bonds (4) It has 6 $2C-2e^{-}$ bonds

BeSO₄ is water soluble while CaSO₄ is not. This is because of:

Discuss the pattern of variation in the oxidation states of
$BtoTl$

$CtoPb$

(a) Calculate the number of electrons which will together weigh one gram.

(b) Calculate the mass and charge of one mole of electrons.

Addition reaction takes place in unsymmetrical alkynes according to:

In dipole-induced dipole forces, the dipole moments (μ) of polar and non polar molecules are

Which of the following equations represent heat of formation of $C{H}_4$ :

Which of the following can be classified as autoprotolysis reactions?

Which of the following will not occur

Principal, azimuthal and magnetic quantum numbers are respectively related to

Lithium crystallizes in a body centred cubic lattice. How many next nearest neighbours does each Li have ?

The term that corrects for the attractive forces present in a real gas in the Van der Waals equation is _____.

The temperature of a piece of iron is ${27}^{o}C$ and it is radiating energy at the rate of $QkW{m}^{-2}$. If its temperature is raised to ${151}^{o}C$, the rate of radiation of energy will become approximately

The ratio of the number of atoms to tetrahedral holes in a unit cell with cubic close packing is:

Are Group 1 element crystals BCC structured or HPC structured ?

Find the ratio of the mean speed of hydrogen molecules to the mean speed of nitrogen molecules in a sample containing a mixture of the two gases.

Select the acid with the highest $K_a$ (i.e., lowest $p{K}_a$).

Calculate the pH of an aqueous solution of $1.0M$ ammonium formate assuming complete dissociation. ($p_{Ka}$ of formic acid = 3.8 and $p_{Kb}$ of ammonia = 4.8)