## Engineering Mock Test

Engineering Free Online Practice Test for enhancing your exam preparation and score maximum marks. Here you can practice with the following sample questions.

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#1 Which of the following solutions is expected to show positive deviations from Raoult’s law?

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#2 Which of the following solutions is expected to show negative deviations from Raoult’s law?

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#3 The vapour pressure of a pure liquid A is 80 mmHg at 300 K. It forms an ideal solution with liquid B. When the mole fraction of B is 0.4, the total pressure was found to be 88 mmHg. The vapour pressure of liquid A would be

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#4 When mercuric iodide is added to an aqueous solution of potassium iodide the

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#5 Which of the following 0.1 M aqueous solutions will have the lowest freezing point?

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#6 A solution contains 0.1 mol of acetamide in 1 L of glacial acetic acid. When the solution is cooled, the first crystals that appeared at the freezing point contain the molecules of

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#7 The unit of freezing point depression constant is

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#8 Two numbers are selected randomly from the set S = {1, 2, 3, 4, 5, 6} without replacement one by one. The probability that minimum of the two numbers is less than 4 is

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#9 If three distinct numbers are chosen randomly from the first 100 natural numbers, then the probability that all three of them are divisible by both 2 and 3 is

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#10 A fair die is rolled. The probability that the first time 1 occurs at the even number of trials is

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#11 One Indian and four American men and their wives are to be seated randomly around a circular table. Then the conditional probability that the Indian man is seated adjacent to his wife given that each American is seated adjacent to his wife is

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#12 A person draws two cards successively without replacement from a pack of 52 cards. He tells that both cards are aces. What is the probability that both are aces if there are 60 per cent chances that he speaks truth?

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#13 An unbiased die is tossed until a number greater than 4 appears. The probability that an even number of tosses is needed is

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#14 An ideal gas is filled in a closed rigid and normally insulated container. A coil of 100 ohm resistor carrying current 1A for 5 minute supplied heat to the gas. The change is internal energy of gas is

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#15 A uniform electric field pointing in positive x-direction exists in a region. Let A be the origin, B be the point on the x-axis at x = +1 cm and C be the point on the y-axis at y = +1 cm. Then the potentials at the points A, B and C satisfy