JEE Main entrance exam Question Bank Solutions

The Gibb's energy change (in J) for the given reaction at [Cu²⁺] = [Sn²⁺] = 1 M and 298 K is ______.

\[\ce{Cu(s) + Sn^{2+}(aq) -> Cu^{2+}(aq) + Sn(s)}\]

`["E"_("Sn"^(2+)//"Sn")^0 = -0.16 "V", "E"_("Cu"^(2+)//"Cu")^0 = 0.34 "V", "Take F" = 96500  "C mol"^-1]`

Which type of isomerism can not be shown by benzaldoxime?

The equilibrium constant at 25°C for the given cell is:

Zn | Zn²⁺ (1M) | | Ag⁺ (1M) |

Ag is ______ × 10⁵².

Given that

\[\ce{E^0_{Zn/Zn^{2+}}}\] = 0.76 V

and \[\ce{E^0_{Ag/Ag^{+}}}\] = −0.80 V

The e.m.f. of cell Zn | ZnSO₄ | | CuSO₄ | Cu at 25°C is 0.03 V and the temperature coefficient of e.m.f. is −1.4 × 10⁻⁴ V/K. The heat of reaction for the change taking place inside the cell is ______ kJ/mol.

Volume of N₂ at NTP required to form a monolayer on the surface of iron catalyst is 8.15 ml/g of the adsorbent. If each nitrogen molecule occupies 16 × 10⁻²² m². The surface area of the 100 g adsorbent will be ______ × 10¹⁸ m².

Acetamide is isomer of ______.

Dipole moment of HX is 2.59 × 10⁻³⁰ coulomb-metre. Bond length of HX is 1.39 Å. The ionic character of molecule is ______%.

Finely divided catalyst has greater surface area and has greater catalytic activity than a compact solid. If a total surface area of 6291456 cm² is required for adsorption of gaseous reaction in a catalysed reaction, then the number of splits should be made of a cube exactly 1 cm in length is ______.
[Given : After each split new cubes of equal dimensions are formed.]

Which one of the following pairs are called position isomers?

The correct stereochemical name of

1000 g aqueous solution of CaCO₃ contains 10 g of calcium carbonate. Concentration of the solution is ______.

The dipole moments of the given molecules are such that ______.

Electrolytic reduction method is used for the extraction of ______.

In the above reaction if we take methylene chloride and isopropylidene chloride then products are ______.

The compound that will not give iodoform on treatment with alkali and iodine is ______.

The observed dipole-moment of HCl molecule is 1.03 D. If \[\ce{H - Cl}\] bond distance is 1.275 Å and electronic charge is 4.8 × 10^-10 esu. What is the percent polarity of HCl?

How many structural isomers possible of the molecular formula C₃H₆O (excluding enol form)?

The cell potential for the following cell

\[\ce{Pt|H2 (g)| H+ (aq)||Cu^{2+} (0.01 M)| Cu(s)}\]

is 0.576 Vat 298 K. The pH of the solution is ____. (Nearest integer)

The standard Gibbs energy for the given cell reaction in kJ mol^-1 at 2'98 K is:

\[\ce{Zn(s) + Cu^{2+} (aq) -> Zn^{2+} (aq) + Cu(s)}\]

E° = 2 V at 298 K

(Faraday's constant, F = 96000 C mol^-1)

For a spontaneous reaction, the ΔG, equilibrium constant (K) and `"E"_"cell"^circ` will be respectively.