Stoichiometry

The evaporation of aqueous solution of sugar causes its molarity to__________________?

Byadmin March 4, 2019August 24, 2021

The evaporation of aqueous solution of sugar causes its molarity to__________________?

A. Decrease
B. Increase
C. Remain unchanged
D. Either A. or B.; depends on the concentration of the solution

Stoichiometry

Which of the following is not a unit of kinematic viscosity ?

Which of the following is not a unit of kinematic viscosity ?

A. Poise
B. Stoke
C. cm2/second
D. None of these

Read More Which of the following is not a unit of kinematic viscosity ?
Stoichiometry

One micron is equal to _____________ cm?

One micron is equal to _____________ cm?

A. 10-2
B. 10-4
C. 10-6
D. 10-8

Read More One micron is equal to _____________ cm?
Stoichiometry

If 1.5 moles of oxygen combines with aluminium to form Al2O3, then the weight of aluminium (atomic weight = 27) used in this reaction is __________ gm?

If 1.5 moles of oxygen combines with aluminium to form Al2O3, then the weight of aluminium (atomic weight = 27) used in this reaction is __________ gm?

A. 27
B. 54
C. 5.4
D. 2.7

Read More If 1.5 moles of oxygen combines with aluminium to form Al2O3, then the weight of aluminium (atomic weight = 27) used in this reaction is __________ gm?
Stoichiometry

Cp is expressed in S.I. unit as_______________?

Cp is expressed in S.I. unit as_______________?

A. J/kg.°K
B. 0°K
C. W/m2.°C
D. W/m.°K

Read More Cp is expressed in S.I. unit as_______________?
Stoichiometry

A metal oxide is reduced by heating it in a stream of hydrogen. After complete reduction, it is found that 3.15 gm of the oxide has yielded 1.05 gm of the metal. It may be inferred that the ____________________?

A metal oxide is reduced by heating it in a stream of hydrogen. After complete reduction, it is found that 3.15 gm of the oxide has yielded 1.05 gm of the metal. It may be inferred that the ____________________?

A. Atomic weight of the metal is 4
B. Equivalent weight of the metal is 4
C. Atomic weight of the metal is 2
D. Equivalent weight of the metal is 8

Read More A metal oxide is reduced by heating it in a stream of hydrogen. After complete reduction, it is found that 3.15 gm of the oxide has yielded 1.05 gm of the metal. It may be inferred that the ____________________?
Stoichiometry

A vessel of volume 1000 m3 contains air which is saturated with water vapour. The total pressure and temperature are 100 kPa and 20°C respectively. Assuming that the vapour pressure of water at 20°C is 2.34 kPa, the amount of water vapour (in kg) in the vessel is approximately ?

A vessel of volume 1000 m3 contains air which is saturated with water vapour. The total pressure and temperature are 100 kPa and 20°C respectively. Assuming that the vapour pressure of water at 20°C is 2.34 kPa, the amount of water vapour (in kg) in the vessel is approximately ?

A. 17
B. 20
C. 25
D. 34

Read More A vessel of volume 1000 m3 contains air which is saturated with water vapour. The total pressure and temperature are 100 kPa and 20°C respectively. Assuming that the vapour pressure of water at 20°C is 2.34 kPa, the amount of water vapour (in kg) in the vessel is approximately ?

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