List of top Chemistry Questions

Assertion (A): All naturally occurring \(\alpha\)-amino acids except glycine are optically active.
Reason (R): Most naturally occurring amino acids have L-configuration.

Assertion (A): Electrolysis of aqueous NaCl gives H$_2$ at cathode and Cl$_2$ at anode.
Reason (R): Chlorine has higher oxidation potential than H$_2$O.

Assertion (A): Cu cannot liberate \( H_2 \) on reaction with dilute mineral acids. Reason (R): Cu has positive electrode potential.

Kohlrausch gave the following relation for strong electrolytes:
$\Lambda_m = \Lambda_m^0 - A\sqrt{C}$
Which of the following equality holds true?

Standard electrode potential for Sn$^{4+}$/Sn$^{2+}$ couple is +0.15 V and that for the Cr$^{3+}$/Cr couple is -0.74 V. The two couples in their standard states are connected to make a cell. The cell potential will be:

Match the type of cell given in Column I with their use given in Column II.

Column I	Column II
i. Lead storage cell	d. Inverter
ii. Mercury cell	b. Apollo Space Programme
iii. Dry cell	c. Wrist watch
iv. Fuel cell	a. Wall clock

Assertion (A): Electrolysis of aqueous NaCl gives H$_2$ at cathode and Cl$_2$ at anode.
Reason (R): Chlorine has higher oxidation potential than H$_2$O.

The magnetic moment is associated with its spin angular momentum and orbital angular momentum. Spin only magnetic moment value of Cr$^{3+}$ ion (Atomic no. : Cr = 24) is:

The correct IUPAC name of [Pt(NH$_3$)$_2$Cl$_2$]$^{2+} $ is:

Assertion (A): [Cr(H$_2$O)$_6$]Cl$_2$ and [Fe(H$_2$O)$_6$]Cl$_2$ are examples of homoleptic complexes.
Reason (R): All the ligands attached to the metal are the same.

The complex ions \([Co(NH_3)_5(NO_2)]^{2+\) and \([Co(NH_3)_5(ONO)]^{2+}\) are called}

The number of moles of AgCl precipitated when excess AgNO$_3$ solution is mixed with one mole of [Co(NH$_3$)$_6$]Cl$_3$ is:

Out of Ti³⁺, Cr³⁺, Fe²⁺ and Ni²⁺ ions, the one which is the most stable ion in aqueous solution is: