JEE (Advanced) 2015 Paper-2

Instructions

For the following questions answer them individually

Question 31

In the following reactions, the major product W is

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Question 32

The correct statement(s) regarding, $$(i) HClO, (ii) HClO_2 (iii) HClO_3$$ and $$(iv) HClO_4$$ is(are)

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Question 33

The pair(s) of ions where BOTHtheions are precipitated upon passing $$H_2S$$ gas in presence of dilute HCl, is(are)

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Question 34

Under hydrolytic conditions, the compounds used for preparation of linear polymer and for chain termination, respectively, are

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Question 35

When $$O_2$$ is adsorbed on a metallic surface, electron transfer occurs from the metal to $$O_2$$. The TRUE statement(s) regarding this adsorption is(are)

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Question 36

One mole of a monoatomic real gas satisfies the equation $$p(V - b) = RT$$ where b is a constant. The relationship of interatomic potential V(r) and interatomic distance r for the gas is given by

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Instructions

In the following reactions

Question 37

Compound X is

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Question 38

The major compound Y is

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Instructions

When 100 mL of 1.0 M HCl was mixed with 100 mL of 1.0 M NaOH in an insulated beaker at constant pressure, a temperature increase of $$5.7 ^{\circ}C$$ was measured for the beaker and its contents (Expt. 1). Because the enthalpy of neutralization of a strong acid with a strong base is a constant $$(-57.0 kJ mol^{-1})$$, this experiment could be used to measure the calorimeter constant. In a second experiment (Expt. 2), 100 mL of 2.0 M acetic acid $$(K_a = 2.0 \times 10^{-5})$$ was mixed with 100 mL of 1.0 M NaOH (under identical conditions to Expt. 1) where a temperaturerise of $$5.6 ^{\circ}C$$ was measured.
(Consider heat capacity of all solutions as $$4.2 J g^{-1} K^{-1}$$ and densityof all solutions as $$1.0 g mL^{-1})$$

Question 39

Enthalpy of dissociation (in kJ $$mol^{-1}$$) of acetic acid obtained from the Expt. 2 is

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Question 40

The pH of the solution after Expt. 2 is

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