AMU BSc PYQ 2026 | AMU BSc Previous Year Question with explanation

31. Which of the following statement is true about chemisorption ?

(a) It is reversible in nature

(b) It usually occurs at low temperature

(c) It is highly specific

(d) It involves Vander Waals forces

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32. Under normal conditions, which of the following halide do not show F-centres ?

(a) AgCl

(b) LiCl

(c) NaCl

(d) KCl

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33. Joule-Thomson coefficient is defined as:

(a) $(\frac{\delta H}{\delta P})_T$

(b) $(\frac{\delta H}{\delta T})_p$

(c) $(\frac{\delta P}{\delta T})_H$

(d) $(\frac{\delta T}{\delta P})_H$

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34. One mole of NaCl(s) on melting absorbed 30.5 kJ of heat and its entropy is increased by $28.8~JK^{-1}$. What is melting point of NaCl ?

(a) 840 K

(b) 105.9 K

(c) 1059 K

(d) 100 K

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35. For equilibrium in closed vessel $2NH_3(g) \rightleftharpoons N_2(g) + 3H_2(g)$, $K_p$ is found 6 times of $K_c$. This is attained when T is: (given $R = 0.0821 \text{ L atm K}^{-1}\text{mole}^{-1}$)

(a) 73.08 K

(b) 29.8 K

(c) 36.5 K

(d) 59.6 K

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