1.

Match List I with List II

List-I (Element)	List-II (Electronic Configuration)
A. N	I. [Ar] 3d10 4s2 4p5
B. S	II. [Ne] 3s2 3p4
C. Br	III. [He] 2s2 2p3
D. Kr	IV. [Ar] 3d10 4s2 4p6

Choose the correct answer from the options given below:

• A-IV, B-III, C-II, D-I
• A-III, B-II, C-I, D-IV
• A-I, B-IV, C-III, D-II
• A-II, B-I, C-IV, D-III

2.

Which of the following compounds will give silver mirror with ammoniacal silver nitrate?
(A) Formic acid
(B) Formaldehyde
(C) Benzaldehyde
(D) Acetone
Choose the correct answer from the options given below :

• C and D only
• A, B and C only
• A only
• B and C only

3.

The electronic configuration of Einsteinium is :(Given atomic number of Einsteinium = 99)

• [Rn] \( 5f^{12} 6d^0 7s^2 \)
• [Rn] \( 5f^{11} 6d^0 7s^2 \)
• [Rn] \( 5f^{13} 6d^0 7s^2 \)
• [Rn] \( 5f^{10} 6d^0 7s^2 \)

4.

Given below are two statements :
Statement I : The higher oxidation states are more stable down the group among transition elements unlike p-block elements.
Statement II : Copper can not liberate hydrogen from weak acids.
In the light of the above statements, choose the correct answer from the options given below

• Both Statement I and Statement II are false
• Statement I is false but Statement II is true
• Both Statement I and Statement II are true
• Statement I is true but Statement II is false

5.

Which out of the following is a correct equation to show change in molar conductivity with respect to concentration for a weak electrolyte, if the symbols carry their usual meaning

• \( \Lambda_m^2 C - K_a \Lambda_m + K_a \Lambda_m^{\circ 2} = 0 \)
• \( \Lambda_m - \Lambda_m^{\circ} + AC \frac{1}{2} = 0 \)
• \( \Lambda_m - \Lambda_m^{\circ} - AC \frac{1}{2} = 0 \)
• \( \Lambda_m^2 C + K_a \Lambda_m^{\circ 2} - K_a \Lambda_m^{\circ} = 0 \)

6.

The vapour pressure of pure benzene and methyl benzene at \( 27^\circ \text{C} \) is given as 80 Torr and 24 Torr, respectively. The mole fraction of methyl benzene in vapour phase, in equilibrium with an equimolar mixture of those two liquids (ideal solution) at the same temperature, is \( \dots  \times 10^{-2} \) (nearest integer).