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Q1. | What is the simplest formula of a compound containing 50% of element A (atomic weight = 10) and 50% of element B (atomic weight = 20) ? |

A. | AB_{3} [Correct Answer] |

B. | A_{2}B_{3} [Wrong Answer] |

C. | A_{2}B [Wrong Answer] |

D. | AB_{2} [Wrong Answer] |

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

⇒ Gases having same reduced temperatures and reduced pressures

deviate from ideal gas behaviour to the same degree.

have nearly the same compressibility factor.

both (a) and (b).

neither (a) nor (b).

⇒ The weight fraction of methanol in an aqueous solution is 0.64. The mole fraction of methanol

*X*satisfies

_{M}*X*< 0.5

_{M}*X*= 0.5

_{M}0.5 <

*X*< 0.64

_{M}*X*≥ 0.64

_{M}⇒ Solution made by dissolving equimolar amounts of different solutes in the same amount of a given solvent will have the

same elevation in boiling point.

different elevation in boiling point.

elevation in boiling point in the ratio of their molecular weights.

none of these.

⇒

*C*-

_{p}*C*, for an ideal gas is equal to

_{v}*R*

*R*/2

2

*R*

3

*R*

⇒ In general, the specific heats of aqueous solutions __________ with increase in the concentration of the solute.

increase

decrease

remain unchanged

none of these

⇒ Which of the following is not a colligative property ?

Osmotic pressure

Depression of freezing point

Lowering of vapor pressure

none of these.

⇒ NaOH contains __________ percent oxygen.

1

10

16

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⇒ Which of the following is not a unit of pressure ?

Torr

Newton/m

^{2}

Parsec

Ata, bar or pascal

⇒ A solution with reasonably permanent pH is called a/an __________ solution.

ideal

non-ideal

buffer

colloidal

⇒ Assuming applicability of ideal gas law, the pure component volume of the vapor in a saturated gas can be calculated from theoretical relationship. The volumetric composition of a vapor saturated gas is independent of the

nature of the liquid.

nature of the gas.

temperature of the liquid. id) total pressure.

⇒ Which of the following is not a unit of length ?

Parsec

Angstrom

Barn

Fermi

⇒ 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

⇒ "The heat capacity of a solid compound is approximately equal to the sum of the heat capacities of the constituent elements." This is the statement of

Law of Petit and Dulong

Kopp's rule

Nearnst heat theorem

Trouton's rule

⇒ Average molecular weight of air is about

21

29

23

79

⇒ 1 kg/m

^{2}is equal to __________ mm water column.

1

10

100

1000

⇒ Pure aniline is evaporating through a stagnant air film of 1 mm thickness at 300 K and a total pressure of 100 KPa. The vapor pressure of aniline at 300 K is 0.1 KPa. The total molar concentration under these conditions is 40.1 mole/m

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^{-5}m

^{2}/s.The numerical value of mass transfer co-efficient is 7.4 x 10

^{-3}. Its units are

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cm/s

mole/m

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kmole/m

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⇒ Heat capacity of air can be approximately expressed as,

*C*= 26.693 + 7.365 x10

_{p}^{-3}

*T*, where,

*C*is in J/mole.

_{p}*K*and

*T*is in

*K*. The heat given off by 1 mole of air when cooled at atmospheric pressure from 500°C to - 100°C is

10.73 kJ

16.15 kJ

18.11 kJ

18.33 kJ

⇒ Pure aniline is evaporating through a stagnant air film of 1 mm thickness at 300 K and a total pressure of 100 KPa. The vapor pressure of aniline at 300 K is 0.1 KPa. The total molar concentration under these conditions is 40.1 mole/m

^{3}. The diffusivity of aniline in air is 0.74xl0

^{-5}m

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^{-3}. The rate of evaporation of aniline is 2.97 x 10

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mole/cm

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mole/m

^{2}. s

kmole/m

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⇒ 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

⇒ PH value of a solution containing equal concentration of hydroxyl and hydrogen ions will be

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14

⇒ 1 torr is equal to __________ mm Hg column.

1

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1000

⇒ 1 BTU/lb.

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1.987

4.97

⇒ Saturated molal absolute humidity of the vapor-gas mixture depends upon the

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total pressure

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neither (a) nor (b)

⇒ In the reaction, Ca + 2H

_{2}O = Ca(OH)

_{2}+ H

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4480

2240

1120

0.4

⇒ The density of a gas 'X' is twice that of another gas 'Y'. If the molecular weight of gas 'Y' is 'M'; then the molecular weight of the gas 'X' will be

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⇒ One 'Therm' is equivalent to

10

^{5}BTU

10

^{5}kcal

10

^{9}BTU

10

^{9}kcal

⇒ The value of gas constant '

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2.79

1.987

3.99

none of these

⇒ At higher temperatures, molal heat capacities for most of the gases (at constant pressure) __________ with increase in temperature.

varies linearly

increases

decreases

does not vary

⇒ Pick out the wrong unit conversion.

1 Joule = 4.186 calorie.

1 kcal = 3.968 BTU = 0.00116 kWh = 0.00156 hp.

1 ton of TNT (tri-nitro-toluene) = 4.2 GJ (1G = 10

^{9}).

1 ft.lbf= 0.3238 calorie = 0.1383 kg.m = 1.356 J = 1.356 N.m.

⇒ In a binary liquid system, the composition expressed as __________ is independent of the temperature & pressure.

kg of solute/kg of solvent

kg-mole of solute/kg-mole of solvent

kg-mole of solute/1000 kg of solvent

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