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(03-01-2018) Mole Concept, Gaseous & Surface Chemistry - IIT JAM MCQ


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30 Questions MCQ Test - (03-01-2018) Mole Concept, Gaseous & Surface Chemistry

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(03-01-2018) Mole Concept, Gaseous & Surface Chemistry - Question 1

Arrange the following gases in the increasing order of ‘b’. O2, CO2, H2, He:

(03-01-2018) Mole Concept, Gaseous & Surface Chemistry - Question 2

Gases possess characteristic critical temperature which depends upon the magnitude of intermolecular forces between the particles.

What would be the order of liquefaction of these gases? Start writing the order from the gas liquefying first.

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(03-01-2018) Mole Concept, Gaseous & Surface Chemistry - Question 3

The experimental adsorption data of a gas on a solid surface at temperature T exhibits the following variation with pressure. V is the volume of gas adsorbed.

Which of the following is true?

(03-01-2018) Mole Concept, Gaseous & Surface Chemistry - Question 4

The molar heat capacity at constant volume of a colourless gas is found to be 25 J mol–1 K–1 at room temperature. The gas must be:

 

(03-01-2018) Mole Concept, Gaseous & Surface Chemistry - Question 5

Number of atoms in the following samples of substances is the largest in:

(03-01-2018) Mole Concept, Gaseous & Surface Chemistry - Question 6

How many mole of electrons are required to reduce 1.5 mole of nitro-benzene into aniline, if current efficiency, in this experiment is 50%:

(03-01-2018) Mole Concept, Gaseous & Surface Chemistry - Question 7

How many moles of KMnO4 would be required to oxidize a mixture of FeC2O4, FeSO4, Fe2(SO4)3 and Fe2(C2O4)3 which contains 1 mole each of these compounds in an acidic medium:

(03-01-2018) Mole Concept, Gaseous & Surface Chemistry - Question 8

CH3COOH exists as dimer in benzene, 1.2 gm of the acid was dissolved and the volume was made up tone litre by benzene, what is the formality of the acid:

(03-01-2018) Mole Concept, Gaseous & Surface Chemistry - Question 9

5 g of a metal gave 6.35 gm of its oxide. Calculate the equivalent weight of metal:

(03-01-2018) Mole Concept, Gaseous & Surface Chemistry - Question 10

In this balanced equation x, y, z are:

(03-01-2018) Mole Concept, Gaseous & Surface Chemistry - Question 11

At 298 K equal weights of SO2, CH4 and O2 are mixed in empty container. The total pressure exerted is 2.1 atm. The partial pressure of CH4 in the mixture is:

(03-01-2018) Mole Concept, Gaseous & Surface Chemistry - Question 12

Once Tom & Jerry entered a chemistry lab where a chemist was preparing 3L H2SO4 solution. He labeled the solution as 10 m (dsolution = 3.3 gm/ml). As the chemist left the lab, a mischief came in Tom’s mind. He tried to throw the solution on Jerry but failed. In doing so some of the H2SO4 solution fell on the floor, so he added water to make it again to 3L. The chemist returned back and got astonished when he saw the result of analysis, that were d = 1.5 gm/ml and % w/w = 98. Find out the moles of H2SO4 which fell down on the floor.

(03-01-2018) Mole Concept, Gaseous & Surface Chemistry - Question 13

If molecular weights of NH3 and N2 are M1 and M2 respectively, and their equivalent weights are E1 and E2 respectively, then (M1 – M2) is equal to:

(03-01-2018) Mole Concept, Gaseous & Surface Chemistry - Question 14

A mixture of H2SO4 and H2C2O4 (oxalic acid) and some inert impurity weighing 3.185 g was dissolved in water and the solution made up to 1 litre. 10 mL of this solution required 3 mL of 0.1 N NaOH for complete neutralization. In another experiment, 100 mL of the same solution in hot condition required 4 mL of 0.02 M KMnO4 solution for complete reaction. The % by weight of H2SO4 in the mixture was:

(03-01-2018) Mole Concept, Gaseous & Surface Chemistry - Question 15

A flask of 2.05 litre volume contains pure F2 (gas) at 4 atm and 2000 K. To this flask, some solid sulphur is added from outside and sealed. Fluorine reacts completely to form a gaseous fluoride and pressure decreases to 2 atm. Assuming temperature to be constant, the formula of fluoride will be
(R = 0.082 litre atm/mol/k)

(03-01-2018) Mole Concept, Gaseous & Surface Chemistry - Question 16

When an equimolar mixture of Cu2S and CuS is titrated with Ba(MnO4)2 in acidic medium, the final product contains Cu+2, SO2 and Mn+2. If the molecular weight of Cu2S, CuS and Ba(MnO4)2 are M1, M2 and M3 respectively then:

(03-01-2018) Mole Concept, Gaseous & Surface Chemistry - Question 17

An atom of element ‘X’ is 1.02 times heavier than that of an atom of ‘Y’. An atom of ‘Y’ is 0.1809 times heavier than that of an atom of oxygen. What is the atomic weight of ‘X’:

(03-01-2018) Mole Concept, Gaseous & Surface Chemistry - Question 18

Two flasks A and B of equal volume containing NH3 and HCl gases, are connected by a narrow tube to negligible volume. The two gases were prevented from mixing by stopper fitted in connecting tube. For further detail of experiment refer to the given figure. What will be final pressure in each flask when passage connecting two tubes are opened. Assume ideal gas behaviour of NH3 and HCl gas and the reaction.

(03-01-2018) Mole Concept, Gaseous & Surface Chemistry - Question 19

The mean free path of gas A, with molecular diameter equal to 4 Å, contained in a vessel, at a pressure of 10–6 torr, is 6990 cm. The vessel is evacuated and then filled with gas B, with molecular diameter, equal to 2 Å, at a pressure of 10–3 torr, the temperature remaining the same. The mean free path of gas B will be:

(03-01-2018) Mole Concept, Gaseous & Surface Chemistry - Question 20

If the slope of Z (compressibility factor) v/s p curve is constant   at a particular temperature (300 K) and very high pressure, then calculate diameter of the molecules

(Given NAV = 6 × 1023, R = 0.081 L atm K–1 mol–1)

(03-01-2018) Mole Concept, Gaseous & Surface Chemistry - Question 21

A mixture weighing 4.08 g of BaO and unknown carbonate XCO3 was heated strongly. The residue weighed 3.64 g. This was dissolved in 100 mL of 1 N HCl. The excess acid required 16 mL of 2.5 N NaOH solution for complete neutralization. Identify the metal M:

(03-01-2018) Mole Concept, Gaseous & Surface Chemistry - Question 22

13.8 g of Ag2CO3 is strongly heated. If released gases are used for combustion of C2H2, the number of moles of C2H2 oxidized are:

(03-01-2018) Mole Concept, Gaseous & Surface Chemistry - Question 23

Assume that you are using an open-end manometer filled with mineral oil rather than mercury. What is the gas pressure in the bulb (in millimeter of Hg) if the level of mineral oil in the arm connected to the bulb is 237 mm higher than the level in the arm connected to the atmosphere and atmospheric pressure is 746 mm Hg? The density of mercury is 13.6 g/ml. And density of mineral oil is 0.822 g/mol.

(03-01-2018) Mole Concept, Gaseous & Surface Chemistry - Question 24

Graph between and log P is a straight line inclined at an angle q = 45°. When pressure of 0.5 atm and log k = 0.699, the amount of solute adsorbed per g of adsorbent will be:

(03-01-2018) Mole Concept, Gaseous & Surface Chemistry - Question 25

The Langmuir adsorption isotherm is given by where P is the pressure of the adsorbate gas. The Langmuir adsorption isotherm for a diatomic gas A2 undergoing dissociative adsorption is:

(03-01-2018) Mole Concept, Gaseous & Surface Chemistry - Question 26

For one mole of a van der Waal’s gas when b = 0 and T = 300 K, the pV vs. 1/V plot is shown below. The value of the van der Waal’s constant a (atm L mol–2)

(03-01-2018) Mole Concept, Gaseous & Surface Chemistry - Question 27

N moles of diatomic gas in a cylinder are at a temperature T. Heat is supplied to the cylinder such that the temperature remains constant but n moles of the diatomic gas get converted into monoatomic gas. What is the change in the total kinetic energy of the gas?

(03-01-2018) Mole Concept, Gaseous & Surface Chemistry - Question 28

At which location in the inside surface of the closed container shown in figure will the number of gaseous molecular collisions per unit area be the greatest? (Ignore the effects of gravity.)

(03-01-2018) Mole Concept, Gaseous & Surface Chemistry - Question 29

Consider the composite system, which is held at 300 K, shown in below figure. Assuming ideal gas behaviour, calculate the total pressure if the barriers separating the compartments are removed. Assuming that the volume of the barriers is negligible. (Given: R = 0.082 L atm mol–1 K–1)

(03-01-2018) Mole Concept, Gaseous & Surface Chemistry - Question 30

3 g of activated charcoal wad added to 50 mL of acetic acid solution (0.06 N) in a flask. After an hour it was filtered and the strength of the filtrate was found to be 0.042 N. The amount of acetic acid adsorbed (per gram of charcoal) is:

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