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Practice Test - Chemistry 44

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Question 1

Which of the following elements is represented by the electronic configuration ?

Question 2

Which one of the following compounds undergo nucleophilic substitution faster?

Question 3

Phosphine (PH₃) decomposes to produce P₄ (g) and H₂ (g). What would be the change in volume when 100 ml of PH₃ (g) is completely decomposed?

Question 4

In this sequence of reactions A, B, C and D are:

Question 5

The magnetic moment (B.M.) of Fe in [Fe(CN)₆]^4– & [Fe(H₂O)₆]²⁺ respectively are -

Question 6

How many grams of sucrose (M. wt. = 342) should be dissolved in 100 g water in order to produce a solution with a 105.0 °C. Difference between the freezing point and the boiling temperatures? (K_f = 1.86 C/m, K_b = 0.51 ºC/m)

Question 7

1.0 molal aqueous solution of an electrolyte X₃Y₂ is 25% ionized. The boiling point of the solution is (K_b for H₂O = 0.52 K kg/mol)

Question 8

The specific conductivity of a saturated solution of AgCl is 3.40 × 10^–6 ohm^–1 cm^–1 at 25 ºC. If

= 62.3 ohm^–1 cm² mol^–1 & λ_Cl^– = 67.7 ohm^–1 cm² mol^–1 , the solubility of AgCl at 25 ºC is -

Question 9

A piston filled with 0.04 mol of an ideal gas expands reversibly from 50.0 mL to 375 mL at a constant temperature of 37.0⁰C. As it does so, it absorbs 208J of heat. The values of q and w for the process will be:
(R = 8.314 J/mol K) (

n 7.5 = 2.01)

Question 10

The enthalpy change for a given reaction at 298 K is –x cal/mol. If the reaction occurs spontaneously at 298K, the entropy change at that temperature-

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Dec 15JEE & BITSAT