CUET PG 2026 Nanoscience Question Paper (19-Mar-2026) (Shift 3)

Question 1

The $K_a$ value of acetic acid is $1.8 	imes 10^{-5}$. What would be the degree of ionization of 0.02 M acetic acid, containing 0.01 M Sodium acetate in it ?

Accepted Answer

$1.8 	imes 10^{-3}$

Answer

$1.5 	imes 10^{-3}$

Answer

$3 	imes 10^{-2}$

Answer

$1.5 	imes 10^{-2}$

Question 2

Evaporation of water taking place at $100^{\circ}	ext{C}$ at 1 atm. pressure, the correct choice of change in $\Delta	ext{S}$ for system and surrounding would be :

Accepted Answer

$\Delta	ext{S}_{	ext{system}} > 0$$\Delta	ext{S}_{	ext{surrounding}}

Answer

$\Delta	ext{S}_{	ext{system}} > 0$$\Delta	ext{S}_{	ext{surrounding}} > 0$

Answer

$\Delta	ext{S}_{	ext{system}} $\Delta	ext{S}_{	ext{surrounding}}

Answer

$\Delta	ext{S}_{	ext{system}} $\Delta	ext{S}_{	ext{surrounding}} > 0$

Question 3

An electric current of 0.50A from a 12V supply is passed for 300 sec through a resistance in thermal contact with water and the water is allowed to boil under a pressure of 1.0 atm. The value of enthalpy change during the process, if 0.798 gm of water is vaporised, will be :

Accepted Answer

$+41 	ext{ kJ mol}^{-1}$

Answer

$-44 	ext{ kJ mol}^{-1}$

Answer

$-37 	ext{ kJ mol}^{-1}$

Answer

$+82 	ext{ kJ mol}^{-1}$

Question 4

The integrated rate law and half-life equation for an first order reaction would be :

Accepted Answer

$[A] = [A]_0 e^{-k_r t} 	ext{ \& } t_{1/2} = (\ln 2) / K_r$

Answer

$[A] = [A]_0 - k_r t 	ext{ \& } t_{1/2} = (\ln 2) / K_r$

Answer

$1/[A] - 1/[A]_0 = k_r t 	ext{ \& } t_{1/2} = 1 / K_r [A]_0$

Answer

$[A]_0 = [A]_t e^{-k_r t} 	ext{ \& } t_{1/2} = 1 / K_r [A]$

Question 5

The Miller indices of the shown lattice plane in a simple cubic Bravais lattice are :

Accepted Answer

(110)

Answer

(101)

Answer

(001)

Answer

(111)

CUET PG 2026 Nanoscience Question Paper (19-Mar-2026) (Shift 3)

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