List of top Chemistry Questions

Arrange the following in the increasing order of number of unpaired electrons present in the central metal ion:
I. \([MnCl_6]^{4-}\)
II. \([FeF_6]^{3-}\)
III. \([Mn(CN)_6]^{3-}\)
IV. \([Fe(CN)_6]^{3-}\)

If \( \lambda_0 \) and \( \lambda \) are respectively the threshold wavelength and wavelength of incident light, the velocity of photoelectrons ejected from the metal surface is:

The correct order of covalent bond character of \( BCl_3, CCl_4, BeCl_2, LiCl \) is:

In which of the following pairs, both molecules possess dipole moment?

A flask contains 98 mg of H₂SO₄. If \( 3.01 \times 10^{20} \) molecules of H₂SO₄ are removed from the flask, the number of moles of H₂SO₄ remaining in the flask is (\( N = 6.02 \times 10^{23} \)):

The number of extensive properties in the following list is: Enthalpy, density, volume, internal energy, temperature.

Consider the following standard electrode potentials (\(E^\circ\) in volts) in aqueous solution: \includegraphics[]{135.png} Based on this data, which of the following statements is correct?

What is the boiling point (in K) of the urea solution from the given graph?

Evaluate the correctness of the given statements.
I. Negative deviation occurs when A-B interactions are stronger than A-A and B-B.
II. Reverse osmosis requires applied pressure greater than osmotic pressure.

Match List - I with List -