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Give
the disproportionation reaction of H₃PO₃.

How many optical isomers are possible in a compound with one chiral carbon ?

If the solubility of calcium sulphate in water is $1.03\times {10}^{-5}$, what will be its solubility in $0.005M$ solution of sulphuric acid?

A gas can be taken from $A$ to $B$ via two different processes, $ACB$ and $ADB$.





When path $ACB$ is used, $60\text{J}$ of heat flows into the system and $30\text{J}$ of work is done by the system. If path $ADB$ is used, work done by the system is $10\text{J}$. The heat flow into the system in path $ADB$ is:

One mole of Helium gas undergoes a reversible cyclic process ABCDA as shown in the figure.

Assuming gas to the ideal, answer the following questions:



What is the value of ‘q’ for the overall cyclic process?

If one mole of an ideal monoatomic gas at temperature $T_0$ is expanding slowly while following the law $P{V}^{–1}$ = constant.
When the final temperature is $2T_0$, the heat supplied to the gas is $IR{T}_0$, where I is an integer. Find the value of I.___

How much water is needed to dilute 10 ml of 10 N HCl to make it exactly deci-normal?

Arrange $C{e}^{+3},L{a}^{+3},P{m}^{+3}$ and $Y{b}^{+3}$ in increasing order of their ionic radii

The d-orbital involved in ${sp}^{3}d$ hybridization is

Which carbon becomes the anomeric carbon of glucose in its pyranose form?

Show that the Modulus Function f:
R → R given by,
is neither one-one nor onto, where
is x, if x is positive or 0 andis
− x, if x is negative.

An organic compound with 4 carbons, 10 hygrogens and 1 oxygen can show:

Which of the following alkyl halide is hydrolysed by $S{N}^2$ mechanism?

An element crystallizes in BCC unit cell having molecular mass $50g/mol$ . Calculate the density of unit cell, if its edge length is $300pm$.

Take

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

The linkage between the two monosaccharide units in lactose

Which of the following hydride does NOT follow the Law of definite proportions?

An iodised salt contain $0.5$% of $NaI$. A person consumes $3\text{g}$ of salt everyday. The number of iodide ions going into his body everyday is:

[Atomic wt. of Iodine = $127u$]

The total number of ammonia molecules present in 2 gram molecules of $\left[Cu\right(N{H}_3{)}_4\left(H_{2}O{)}_2\right]C{l}_2$ is $z\times {10}^{24}$.
Value of $z$ is:

Choose the reaction(s) from the following options for which the standard enthalpy of reaction is equal to the standard enthalpy of formation:

When an aqueous solution of D - glucose or D - mannose is treated with a base it undergoes some conversions. This conversion (isomerisation) involves