Chemistry Question Bank

[AMU 2009] Probability of finding an electron at the nodal surface is

[Haryana PMT 2009] The number of nodal planes in the pₓ orbital is

[Manipal 2009] For f-orbital, the values of magnetic quantum number m are

[Haryana PMT 2010] The electronic configuration 1s², 2s², 2p¹ₓ 2p¹ᵧ 2p¹_z for nitrogen (not 1s², 2s², 2p²ₓ 2p¹ᵧ 2p⁰_z) is determined by

[RPMT 2010] Principal, azimuthal and magnetic quantum numbers are respectively related to

[MP PMT 2010] The relation between wave nature of light (photons) and stream of particles is given by de Broglie's equation:

[VMMC 2010] Which of the following pairs is isoelectronic?

[CBSE AIPMT 2011] The total number of atomic orbitals in the fourth energy level of an atom is

[Manipal 2010] Which one of the following statements in relation to the hydrogen atom is correct?

[KCET 2012] The nitride ion in lithium nitride (Li₃N) is composed of

[AIPMT 2012] Maximum number of electrons in a subshell with l = 3 and n = 4 is

[NEET 2013] What is the maximum number of electrons that can be associated with the quantum numbers n=3, l=1 and m=−1?

[CBSE AIPMT 2015] The orbital angular momentum of an electron in a d orbital is equal to

[NEET 2016] How many electrons can fit in the orbital for which n = 3 and l = 1?

[NEET 2016] Two electrons occupying the same orbital are distinguished by

[NEET 2020] In ¹⁷⁵₇₁Lu, the number of protons, neutrons and electrons respectively are

[NEET 2021] A radio station broadcasts at frequency 1368 kHz. The wavelength of electromagnetic radiation emitted is (c = 3 × 10⁸ m/s)

Pauli's exclusion principle states that

Pairing of electrons in orbitals belonging to the same subshell does not take place until each orbital is singly occupied. This is called

[NEET 2021] From the following pairs, which one is NOT an isoelectronic pair?

Hydrogen evolved at NTP on complete reaction of 27 gm of Al with excess of aq NaOH would be (Chemical reaction: 2Al + 2NaOH + \(\mathrm{H_2O}\) \(\mathrm{NaAlO_2}\) + \(\mathrm{H_2}\)

An ore contains 1.34% of the mineral argentite, \(\mathrm{Ag_2S}\) by weight. How many grams of this ore would have to be processed in order to obtain 1.00 g of pure solid silver, Ag?

The number of electron in the telluride ion. \(\mathrm{Te_2}\) is

What is the total number of atoms present in 25.0 mg of camphor \(\mathrm{C_10H_16O}\)

Chlorophyll contains 2.68% of magnesium by mass. Calculate the number of magnesium atoms in 3.00 gms of chlorophyll.