AIPMT 2012 Mains | NEET Year Wise Previous Years Questions

AIPMT 2012 Mains

MCQ (Single Correct Answer)

-1

In which of the following arrangements the given sequence is not strictly according to the property indicated against it?

HF < HCl < HBr < HI : increasing acidic strength

H₂O < H₂S < H₂Se < H₂Te : increasing pK_a values

NH₃ < PH₃ < AsH₃ < SbH₃ : increasing acidic character

CO₂ < SiO₂ < SnO₂ < PbO₂ : increasing oxidising power

AIPMT 2012 Mains

MCQ (More than One Correct Answer)

-1

Activation energy (E_$$a$$) and rate constants (k₁ and k₂) of a chemical reaction at two different temperatures (T₁ and T₂) are related by

$$\ln {{{k_2}} \over {{k_1}}} = - {{{E_a}} \over R}\left( {{1 \over {{T_1}}} - {1 \over {{T_2}}}} \right)$$

$$\ln {{{k_2}} \over {{k_1}}} = - {{{E_a}} \over R}\left( {{1 \over {{T_2}}} - {1 \over {{T_1}}}} \right)$$

$$\ln {{{k_2}} \over {{k_1}}} = - {{{E_a}} \over R}\left( {{1 \over {{T_2}}} + {1 \over {{T_1}}}} \right)$$

$$\ln {{{k_2}} \over {{k_1}}} = {{{E_a}} \over R}\left( {{1 \over {{T_1}}} - {1 \over {{T_2}}}} \right)$$

AIPMT 2012 Mains

MCQ (Single Correct Answer)

-1

Molar conductivities $$\left( {\Lambda _m^o} \right)$$ at infinite dilution of NaCl, Hcl and CH₃COONa are 126.4, 425.9 and 91.0 S cm² mol^$$-$$1 respectively. $$\left( {\Lambda _m^o} \right)$$ for CH₃COOH will be

425.5 S cm² mol^$$-$$1

180.5 S cm² mol^$$-$$1

290.8 S cm² mol^$$-$$1

390.5 S cm² mol^$$-$$1

AIPMT 2012 Mains

MCQ (Single Correct Answer)

-1

The Gibb's energy for the decomposition of Al₂O₃ at 500^oC is as follows
$${2 \over 3}$$ Al₂O₃ $$ \to $$ $${4 \over 3}$$ Al + O₂
$$\Delta $$_rG = +960 kJ mol^$$-$$1
The potential difference needed for the electrolytic reduction of aluminium oxide (Al₂O₃) at 500^oC is at least

4.5 V

3.0 V

2.5 V

5.0 V

PREVIOUS NEXT

NEET Papers

2024