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Q1. | In case of an unsaturated vapor-gas mixture, the humid volume increases with increase in the |

A. | total pressure. [Wrong Answer] |

B. | absolute humidity at a given temperature. [Wrong Answer] |

C. | both (a) and (b). [Correct Answer] |

D. | neither (a) nor (b). [Wrong Answer] |

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Explanation:-
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**Also Read Similar Questions Below :**

⇒ The most convenient way of expressing solution concentration is in terms of

mole fraction

normality

molality

molarity

⇒ For water evaporating into usaturated air under adiabatic conditions and at constant pressure, the __________ remains constant throughout the period of vaporisation.

dry bulb temperature

wet bulb temperature

humidity

relative saturation

⇒ The number of atoms of oxygen present in 11.2 litres of ozone (O

_{3}) at N.T.P. are

3.01 x 10

^{22}

6.02 x 10

^{23}

9.03 x 10

^{24}

1.20 x 10

^{24}

⇒ The temperature at which a real gas obeys Boyle's law is termed as the

triple point

Boyle's temperature

eutectic point

inversion temperature

⇒ Internal energy of a substance comprises of the __________ energy.

vibrational

rotational

translational

all (a), (b) & (c)

⇒ What is the simplest formula of a compound containing 50% of element A (atomic weight = 10) and 50% of element B (atomic weight = 20) ?

AB

_{3}

A

_{2}B

_{3}

A

_{2}B

AB

_{2}

⇒ For a given mass of a gas at constant temperature, if the volume '

*V*' becomes three times, then the pressure '

*P*' will become

*P*/3

3

*P*

9

*P*

^{2}

9

*P*

⇒ S.T.P. corresponds to

1 atm. absolute pressure & 15.5°C.

760 mm Hg gauge pressure & 15.5°C.

760 torr & 0°C.

101.325 kPa gauge pressure & 15.5°C.

⇒ A gas occupies a volume of 283 c.c at 10°C. If it is heated to 20°C at constant pressure, the new volume of the gas will be __________ c.c.

283

566

293

141.5

⇒ Under conditions of equal reduced pressure and equal reduced temperature, substances are said to be in the 'corresponding states'. At equal reduced conditions i.e., at the corresponding state, the __________ of different gases are nearly the same.

compressibility

molecular weight

humidity

none of these

⇒ 1 kg/cm

^{2}is equal to

760 torr

1KPa

10 metres of water column

1 metre of water column

⇒ A butane isomerisation process produces 70 kmole/hr of pure isobutane. A purge stream removed continuously, contains 85% n-butane and 15% impurity (mole%). The feed stream is n-butane containing 1% impurity (mole%). The flow rate of the purge stream will be

3 kmole/hr

4 kmole/hr

5 kmole/hr

6 kmole/hr

⇒ Kinetic theory of gases stipulates that, the

energy is lost during molecular collisions.

molecules possess appreciable volume.

absolute temperature is a measure of the kinetic energy of molecules.

none of these.

⇒ A fluid gas produced on burning furnace oil contains 0.15 gm mole of CO

_{2}, 0.05 gm mole of oxygen and 0.80 gm mole of N

_{2}. What is its molecular weight ?

28.6

30

30.6

32.6

⇒ The value of Trouton's ratio (

*λ*/

_{b}*T*) for a number of substances is 21 (where,

_{b}*λ*= molal that of vaporisation of a substance at its normal boiling point, KCal/kg. mole and

*b**T*= normal boiling point, °K). The Kis-tyakowsky equation is used for calculation of Trouton's ratio of __________ liquids.

_{b}polar

non-polar

both (a) & (b)

neither (a) nor (b)

⇒ Heat of solution in a system in which both solute and solvent are liquids is termed as

heat of solvation.

heat of hydration.

standard integral heat of solution.

heat of mixing.

⇒ Unrestrained expansion of an ideal gas does not result in its cooling due to the reason that the gas molecules

do not lose energy on collision.

are above the inversion temperature.

do not exert attractive force on each other.

do work equal to loss in kinetic energy.

⇒ Claussius Clapeyron equation applies to the __________ process.

sublimation

melting

vaporisation

all (a), (b) & (c)

⇒ The temperature at which real gases obey the ideal gas law over a wide range of pressure is called the __________ temperature.

reduced

Boyle

critical

inversion

⇒ What is the total pressure exerted by a mixture of 0.45 kg mole of benzene, 0.44 kg mole of toluene and 0.23 kg mole of o-xylene at 100°C, if their vapor pressures at 100°C are 1340, 560 and 210 mmHg respectively ?

756.2

780.5

801.5

880.5

⇒ Heat of transition is the heat evolved or absorbed, when a substance is converted from

vapor to liquid.

vapor to solid.

solid to liquid.

one allotropic form to another allotropic form.

⇒ Volume occupied by one gm mole of a gas at S.T.P. is

22.4 litres

22400 litres

22.4 c.c

359 litres

⇒ In a binary liquid solution of components A and B, if component A exhibits positive deviation from Raoult's law, then component B

exhibits positive deviation from Raoult's law.

exhibits negative deviation from Raoult's law.

obeys Raoult's law.

may exhibit either positive or negative deviation from Raoult's law.

⇒ The unit of dynamic viscosity is

stoke

poise

gm/cm sec.

both (b) & (c)

⇒ Viscosity of atmospheric air may be about __________ centipoise.

0.015

1.5

15

150

⇒ Pick out the wrong unit conversion of calorific value.

1 kcal/kg = 1.8 BTU/lb = 4.186 kJ/kg.

1 BTU/ft

^{3}= 8.9 kcal/m

^{3}= 0.038 MJ/m

^{3}.

1 BTU/lb = 2.3 kcal/kg.

1 kcal/m

^{3}= 0.1124 BTU/ft

^{3}.

⇒

*C*is expressed in S.I. unit as

_{p}J/kg.°K

0°K

W/m

^{2}. °C

W/m. °K

⇒ Simultaneous doubling of the absolute temperature of a gas and reduction of its pressure to half, will result in __________ in the volume of the gas.

no change

doubling

l/4th reduction

four fold increase

⇒ Pick out the wrong conversion formula for the conversion of weight units :

1 tonne = 1000 kg = 22.046 lbs

1 U.S. ton = 907 kg = 0.907 tonne = 0.893 ton

1 ton = 2240 lbs = 1016 kg = 1.016 tonnes = 1.12 U.S. tons

none of these

⇒ Heat of reaction is not influenced by

the route/method through which final products are obtained.

the physical state (e.g., solid, liquid or gaseous) of reactants and products.

whether the reaction is carried out at constant temperature or constant pressure.

none of these.