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Why does the following reaction occur?
$Xe{O}_6^{4-}\left(aq\right)+2F^{–}\left(aq\right)+6H^{+}\left(aq\right)\to Xe{O}_3\left(g\right)+F_2\left(g\right)+3H_{2}O\left(l\right)$
What conclusion about the compound $N{a}_{4}Xe{O}_6$ (of which $Xe{O}_6^{4-}$ is a part) can be drawn from the reaction.

The major product of the following reaction is:

1 ml of $H_2{O}_2$ solution gives 10 ml of $O_2$ at N.T.P, It is

The normality of 0.3M phosphorus acid ?

What is the energy of a photon that has a wavelength of 12.3 nm?

Primary and secondary valency of $Pt$ in $\left[Pt\right(en{)}_{2}C{l}_2]$ are

The order of covalent bond character for $LiCl,BeC{l}_2,BC{l}_3$ and $CC{l}_4$ is:

For which of the following $\Delta H$ is not equal to $\Delta U$

Three elctrolytic cells A,B,C containing solutions of $ZnS{O}_4,AgN{O}_3$ and $CuS{O}_4$ respectively are connected in series. A steady current of 1.5 ampere was passed through them until 1.45 g of silver deposited at the cathode3 of cell B. How long did the current flow ? What mass of copper and zinc were deposited ? [Atomic masses; Cu = 63,5, Zn = 65.3; Ag = 108]

Which of the following lanthanoid ions is diamagnetic?

Among the compounds I-IV, the compound having the lowest boiling point is

When initial concentration of a reactant is doubled in a reaction, its half-life period is not affected. The order of the reaction is :

What is the entropy change in $2mol{N}_2$ when its temperature is taken from $400K$ to $800K$, at constant pressure?

If the radius of the second Bohr orbit of hydrogen atom is $r_2$, the radius of the third Bohr orbit will be

When $1\text{mol}$ of crystalline \)NaCl \)is obtained from sodium and $C{l}_2$ gas. $410kJ$ of heat is released. The heat of sublimation of $Na$ metal is $108{\text{kJ mol}}^{–1}$ and $Cl–Cl$ bond enthalpy is $242{\text{kJ mol}}^{–1}$ . If the ionisation energy of Na is $493k{\text{kJ mol}}^{–1}$ and electron gain enthalpy of chlorine is $368{\text{kJ mol}}^{–1}$ , the lattice energy of $NaCl$ is

$O{H}^{-}$ is more basic than $S{H}^{-}$ because

What
happens when sulphur dioxide is passed through an aqueous solution of
Fe(III) salt?

A compound having molar heat of vaporization $8.314kJ/mol$ has a normal boiling point of ${127}^{\circ }C$

If the vapour pressure of same compound at ${27}^{\circ }C$ is denoted as $P_2$. Find the value of ${\log }_e\left(P_2\right)$.

Distinguish between a sigma and a pi bond.

In the lowest energy level of hydrogen atom, the electron has the angular orbital momentum of -

An excited state of $H$ atom emits a photon of wavelength $\lambda$ and returns in the ground state, the principal quantum number of excited state is given by:

Which of the following sets of quantum numbers is not possible?