For the following questions answer them individually
The correct decreasing order of energy, for the orbitals having following set of quantum numbers:
(A) $$n = 3, l = 0, m = 0$$
(B) $$n = 4, l = 0, m = 0$$
(C) $$n = 3, l = 1, m = 0$$
(D) $$n = 3, l = 2, m = 1$$
Outermost electronic configurations of four elements A, B, C, D are given below:
(A) $$3s^2$$
(B) $$3s^2 3p^1$$
(C) $$3s^2 3p^3$$
(D) $$3s^2 3p^4$$
The correct order of first ionization enthalpy for them is
Match List-I with List-II
| List-I | List-II |
|---|---|
| A. $$\Psi_{MO} = \Psi_A - \Psi_B$$ | I. Dipole moment |
| B. $$\mu = Q \times r$$ | II. Bonding molecular orbital |
| C. $$\frac{N_b - N_a}{2}$$ | III. Anti-bonding molecular orbital |
| D. $$\Psi_{MO} = \Psi_A + \Psi_B$$ | IV. Bond order |
The plot of pH-metric titration of weak base $$NH_4OH$$ vs strong acid $$HCl$$ looks like
An element A of group 1 shows similarity to an element B belonging to group 2. If A has maximum hydration enthalpy in group 1, then B is
Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R
Assertion A: Boron is unable to form $$BF_6^{3-}$$
Reason R: Size of B is very small.
In the light of the above statements, choose the correct answer from the options given below:
Match List-I with List-II
| List-I (Mixture) | List-II (Purification Process) |
|---|---|
| A. Chloroform & Aniline | I. Steam distillation |
| B. Benzoic acid & Naphthalene | II. Sublimation |
| C. Water & Aniline | III. Distillation |
| D. Naphthalene & Sodium chloride | IV. Crystallisation |
Given below are two statements:
Statement I: The non bio-degradable fly ash and slag from steel industry can be used by cement industry.
Statement II: The fuel obtained from plastic waste is lead free.
In the light of the above statements, choose the most appropriate answer from the options given below:
Given below are two statements:
Statement I: For KI, molar conductivity increases steeply with dilution.
Statement II: For carbonic acid, molar conductivity increases slowly with dilution.
In the light of the above statements, choose the correct answer from the options given below:
Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R
Assertion A: Dissolved substances can be removed from a colloidal solution by diffusion through a parchment paper.
Reason R: Particles in a true solution cannot pass through parchment paper but the colloidal particles can pass through the parchment paper.
In the light of the above statements, choose the correct answer from the options given below: