Stoichiometry

Fireclay bricks are not used in the________________?

Byadmin March 4, 2019August 24, 2021

Fireclay bricks are not used in the________________?

A. Beehive coke oven
B. By-product coke oven walls
C. Combustion chamber of B.F. stoves
D. Coke oven regenerators

Stoichiometry

Heat of ____________ of a fuel is called its calorific value?

Heat of ____________ of a fuel is called its calorific value?

A. Formation
B. Combustion
C. Reaction
D. Vaporisation

Read More Heat of ____________ of a fuel is called its calorific value?
Stoichiometry

A sample of well water contains 140 gm/m3 Ca2+ ions and 345 gm/m3 Na+ ions. The hardness of the sample of water, expressed in terms of equivalent CaCO3 in gm/m3 is (assuming atomic masses of Ca :40, Na : 23, C : 12, O : 16) ?

A sample of well water contains 140 gm/m3 Ca2+ ions and 345 gm/m3 Na+ ions. The hardness of the sample of water, expressed in terms of equivalent CaCO3 in gm/m3 is (assuming atomic masses of Ca :40, Na : 23, C : 12, O : 16) ?

A. 350
B. 485
C. 140
D. 345

Read More A sample of well water contains 140 gm/m3 Ca2+ ions and 345 gm/m3 Na+ ions. The hardness of the sample of water, expressed in terms of equivalent CaCO3 in gm/m3 is (assuming atomic masses of Ca :40, Na : 23, C : 12, O : 16) ?
Stoichiometry

A solution is made by dissolving 1 kilo mole of solute in 2000 kg of solvent. The molality of the solution is_________________?

A solution is made by dissolving 1 kilo mole of solute in 2000 kg of solvent. The molality of the solution is_________________?

A. 2
B. 1
C. 0.5
D. 0.05

Read More A solution is made by dissolving 1 kilo mole of solute in 2000 kg of solvent. The molality of the solution is_________________?
Stoichiometry

One kg of saturated steam at 100°C and 1.01325 bar is contained in a rigid walled vessel. It lias a volume of 1.673 m3. It cools to 98°C; the saturation pressure is 0.943 bar ; one kg of water vapour under these conditions has a volume of 1.789 m3. The latent heat of condensation (kJ/kg-1 ) under these conditions is___________________?

One kg of saturated steam at 100°C and 1.01325 bar is contained in a rigid walled vessel. It lias a volume of 1.673 m3. It cools to 98°C; the saturation pressure is 0.943 bar ; one kg of water vapour under these conditions has a volume of 1.789 m3. The latent heat of condensation (kJ/kg-1 ) under these conditions is___________________?

A. 40732
B. 2676
C. 2263
D. 540

Read More One kg of saturated steam at 100°C and 1.01325 bar is contained in a rigid walled vessel. It lias a volume of 1.673 m3. It cools to 98°C; the saturation pressure is 0.943 bar ; one kg of water vapour under these conditions has a volume of 1.789 m3. The latent heat of condensation (kJ/kg-1 ) under these conditions is___________________?
Stoichiometry

Elements in a periodic table are arranged in order of their__________________?

Elements in a periodic table are arranged in order of their__________________?

A. Atomic number
B. Mass number
C. Atomic weight
D. Metallic characteristics

Read More Elements in a periodic table are arranged in order of their__________________?
Stoichiometry

Enthalpy of a vapor gas mixture may be increased by increasing the________________?

Enthalpy of a vapor gas mixture may be increased by increasing the________________?

A. Temperature at constant humidity
B. Humidity at constant temperature
C. Temperature and the humidity
D. All A., B. & C.

Read More Enthalpy of a vapor gas mixture may be increased by increasing the________________?

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