The IUPAC name of the following compound is

• 3-ethyl-2-methylbutanal

• 2, 3-dimethylpentanal

• 2-ethyl-3-methylbutanal

• 2-ethyl-3-methylbutan-3-al

Oxidation potential of unimoles of calomel is

• + 0.25 V

• 0.00 V

• + 0.287 V

• -0.28 V

1 C electricity deposits

• 10.8 g of Ag

• 96500 g of Ag

• electrochemical equivalent of Ag

• half of electrochemical equivalent of Ag

Given, for Sn⁴⁺/ Sn²⁺, standard reductiona potential is 0.15 V and for Au³⁺/ Au, standard reduction potential is 1.5 V.

For the reaction,

3Sn²⁺ + 2Au³⁺ → 3Sn⁴⁺ + 2Au

the value of E${}_{\mathrm{cell}}^{°}$ is

• +1.35

• +2.55

• -1.35

• -2.55

25.

The isotope tha causes skin disease is

• I¹³¹

• S³⁵

• P³¹

• None of these

The first order integrated rate equation is

• k = $\frac{\mathrm{x}}{\mathrm{t}}$

• k = $\frac{2.303}{\mathrm{t}} \log \frac{\mathrm{a}}{\mathrm{a} - \mathrm{x}}$

• k = $\frac{1}{\mathrm{t} } \ln \frac{\mathrm{a}}{\mathrm{a} - \mathrm{x}}$

• k = $\frac{1}{\mathrm{t}}\frac{\mathrm{x}}{\mathrm{a}(\mathrm{a} - \mathrm{x})}$

For nuclear fusion reactions, the fusion temperature is of the order of

• 10⁵ K

• 10³ K

• 10⁷ K

• 100 K

The units of rate constant for first order reaction are

• mol L^-1s^-1

• s^-1

• Lmol^-1s^-1

• L²mol^-2s^-1

German silver does not contain

• Sn

• Cu

• Zn

• Ni

Ratio of loss in solvent to gain in CaCl₂ tube is

• $\frac{\mathrm{p}°}{\mathrm{p}}$

• $\frac{\mathrm{p}}{\mathrm{p}°}$

• $\frac{\mathrm{p}° - \mathrm{p}}{\mathrm{p}°}$

• $\frac{\mathrm{p} - \mathrm{p}°}{\mathrm{p}}$