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Which pair is not the correct order of Lattice Energy?

For the reaction

2A_(g) + B_(g) → 2D_(g)

ΔU^θ = –10.5 kJ and ΔS^θ= –44.1 JK^–1.

Calculate ΔG^θ for the reaction, and predict whether the reaction may occur spontaneously.

What volume of CH₄ at NTP contains same number of molecules as atoms in 16g of S₈ ?

What is the molarity of $H_{2}S{O}_4$ solution, that has a density $1.84\text{g/cc}$ at $35{}^{\circ }C$ and contains $98\%$ by weight?

An organic compound (A) on reduction gives compound (B). (B) on treatment with CHCl₃ and alcoholic KOH gives (C). (C) on catalytic reduction gives N - methyl aniline. The compound 'A' is

The most acidic proton and the strongest nucleophilic nitrogen in the following compound


respectively are

Among the following structures I to IV
I. II. III. IV.
It is true that

If resistivity of pure silicon is 3000$\Omega$m and the electron and hole mobilities are 0.12 $m^2{V}^{-1}{s}^{-1}$ and 0.045 $m^2{V}^{-1}{s}^{-1}$ respectively. The resistivity of a specimen of the material when 10¹⁹ atoms of Phosphorous are added per $m^3$ is

What is the main product of the reaction between 2-methyl propene with hydrogen bromide?

[RPMT 2002]

WhiCh of the following statements are incorrect about receptor proteins?
(a) Majority of receptor proteins are embedded in the cell membranes
(b) The active site of receptor proteins opens on the inside region of the cell
(c) Chemical messengers are received at the binding sites of receptor proteins
(d) Shape of receptor doesn't change during attachment of messenger

What volume of 21% oxygen by volume is required of air at NTP to completely burn 1000 gram of sulphur containing 4% incombustible matter ?

IUPAC name of $\left[Pt\right(N{H}_3{)}_{2}Cl\left(N{O}_2\right)]$ is
(a) Platinum diaminechloronitrite
(b) Chloronitrito-N-ammineplatinum (II)
(c) Diamminechloridonitrito-N-platinum (II)
(d) Diamminechloronitrito-N-platinate (II)

The freezing point of a solution containing $0.2g$ of acetic acid in $20g$ of benzene is lowered by ${0.45}^{\circ }C.$. Calculate the degree of association $\left(\beta \right)$ for acetic acid.

Given :

$(K_f{)}_{\text{Benzene}}=5.12Kkgmo{l}^{-1}$

Use
molecular orbital theory to explain why the Be₂
molecule does not exist.

Fat solubule vitamins of the following

Calculate the relative lowering of vapour pressure when $12g$ urea (Mol weight 60 g/mol) is dissolved in $90g$ of water.

Davisson-Germer experiment is performed first with $X-$rays of wavelength $\lambda$ and then with electrons of same wavelength $\lambda$. The ratio of energy of $X-$ rays to that of the electrons in of the order of $(m=\text{mass of electron})$

If the ratio of specific heat of gas at constant pressure to that at constant volume is $\gamma$, the change in internal energy of a gas, when the volume changes from $V$ to $2V$ at constant pressure $P$ is

The unit of rate constant for a zero order reaction is

On mixing an alkane with chlorine and irradiating with ultraviolet light, it forms only one monochloro alkane. The alkane is

1. 7581

Write
the resonance structures for SO₃,
NO₂
and.