Raoult’s law is not applicable to the___________________?

Byadmin March 12, 2019August 30, 2021

Raoult’s law is not applicable to the___________________?

A. Solutes which dissociate or associate in the particular solution
B. Concentrated solutions
C. Both B. & C.
D. Solutions containing non-volatile solute

Stoichiometry

An Azeotropic solution of two liquids has boiling point lower than either of them, when it_____________?

An Azeotropic solution of two liquids has boiling point lower than either of them, when it_____________?

A. Is saturated
B. Is unsaturated
C. Shows negative deviation from Raoult’s law
D. Shows positive deviation from Raoult’s law

Read More An Azeotropic solution of two liquids has boiling point lower than either of them, when it_____________?
Stoichiometry

Air at a temperature of 20°C and 750 mm Hg pressure has a relative humidity of 80%. What is its percentage humidity? Vapour pressure of water at 20°C is 17.5 mm Hg?

Air at a temperature of 20°C and 750 mm Hg pressure has a relative humidity of 80%. What is its percentage humidity? Vapour pressure of water at 20°C is 17.5 mm Hg?

A. 80.38
B. 80
C. 79.62
D. 78.51

Read More Air at a temperature of 20°C and 750 mm Hg pressure has a relative humidity of 80%. What is its percentage humidity? Vapour pressure of water at 20°C is 17.5 mm Hg?
Stoichiometry

Magnesite refractories are generally not used in the__________________?

Magnesite refractories are generally not used in the__________________?

A. Electric furnace walls
B. Steel melting furnace
C. Open hearth furnace
D. Burning zone of cement kilns

Read More Magnesite refractories are generally not used in the__________________?
Stoichiometry

The crystallisation of a solute from a solution may be done by________________?

The crystallisation of a solute from a solution may be done by________________?

A. Removal of pure solvent by evaporation
B. Change of temperature thereby causing super-saturation
C. Changing the nature of the system by the addition of a more soluble material
D. All A., B. & C.

Read More The crystallisation of a solute from a solution may be done by________________?
Stoichiometry

The boiling points for pure water and pure toluene are 100°C and 110.6°C respectively. Toluene and water are completely immiscible in each other. A well agitated equimolar mixture of toluene and water are prepared. The temperature at which the above mixture will exert a pressure of one standard atm. is___________________?

The boiling points for pure water and pure toluene are 100°C and 110.6°C respectively. Toluene and water are completely immiscible in each other. A well agitated equimolar mixture of toluene and water are prepared. The temperature at which the above mixture will exert a pressure of one standard atm. is___________________?

A. Less than 100°C
B. 100°C
C. Between 100 and 110°C
D. 110.6°C

Read More The boiling points for pure water and pure toluene are 100°C and 110.6°C respectively. Toluene and water are completely immiscible in each other. A well agitated equimolar mixture of toluene and water are prepared. The temperature at which the above mixture will exert a pressure of one standard atm. is___________________?
Stoichiometry

6 gms of magnesium (atomic weight = 24), reacts with excess of an acid, the amount of H2 produced will be ______________ gm?

6 gms of magnesium (atomic weight = 24), reacts with excess of an acid, the amount of H2 produced will be ______________ gm?

A. 0.5
B. 1
C. 3
D. 5

Read More 6 gms of magnesium (atomic weight = 24), reacts with excess of an acid, the amount of H2 produced will be ______________ gm?

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