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Given the half cell reactions:
$C{u}^{+}\left(aq\right)+e^{-}\to Cu\left(s\right);E^0=+0.52VC{u}^{2+}\left(aq\right)+e^{-}\to C{u}^{+}\left(aq\right);E^0=+0.165V$
The equilibrium constant for the disproportionation reaction at 298 K is:
$2C{u}^{+}\left(aq\right)\to Cu\left(s\right)+C{u}^{2+}\left(aq\right)$

Which is the lowest energy conformation of butane?

QUESTION 14.13

What are the common types of secondary structure fo proteins?

In presence of HCl, $H_{2}S$ results the precipitation of Group – 2 elements but no Gp – 4 elements during quantitative analysis. It is due to

In $KMn{O}_4$ titration in acidic meadium, equivalent mass of $KMn{O}_4$ is:

In any subshell, the maximum nunber of electrons having same value of spin quantum number is :

An electron acelerated under a potential difference of $V\text{(in V)}$ has a certain wavelength $\lambda .$ Mass of the proton is $2000$ times the mass of an electron. If the proton has to have the same wavelength $\lambda$, then it will have to be accelerated under potential difference of $\text{(in V)}$

The crystal are bounded by plane faces (f), straight edges (e) and
interfacial angle (c). The relationship between these is:

Which of the following is/are polar?

The increasing basicity order of the following compounds in the gas phase is:

In which of the following 3c - $4e^{-}$ bond is present?

The correct order of coagulating power of the given cations in the coagulation of a negative sol, is:

Which of the following oxides is not expected to react with sodium hydroxide? [CBSE AIPMT 2009]

Rate of physisorption increases with 

Which of the following volume $\left(V\right)$-temperature $\left(T\right)$ plots represents the behaviour of one mole of an ideal gas at one atmospheric pressure?

Identify (a) and (b)

An aqueous solution of a salt (A) gives white precipitate (B) with sodium chloride solution. The filtrate gives a black precipitate. (C) When $H_{2}S$ is passed into it. Compound (B) dissolves in hot water and the solution gives a yellow precipitate (D) on treatment with sodium iodide. The compound (A) does not give any gas with dilute HCl but liberates a reddish brown gas on heating. Identify the compound (A) to (D).

Choose the correct shorthand notation for standard oxidation potential of the given half reactions.



$\text{(a)}C{H}_{3}CO{O}^{-}\left(aq\right)+4H_{2}O\left(aq\right)\rightleftharpoons 2HC{O}_3^{-}\left(aq\right)+9H^{+}\left(aq\right)+8e^{-}$



$\text{(b)}C\left(s\right)+2H_{2}O\left(aq\right)\rightleftharpoons C{O}_2\left(aq\right)+4H^{+}\left(aq\right)+4e^{-}$

The period number in the long form of the periodic table is equal to
(a) magnetic quantum number of any element of the period
(b) the atomic number of any element of the period
(c) Maximum principal quantum number of any element of the period
(d) maximum azimuthal quantum number of any element of the period

The coordination number and oxidation number of $X$ in the compound $\left[X\right(S{O}_4\left)\right(N{H}_3{)}_5]$ will be: