Stoichiometry

The hydroxyl ion (OH-) concentration in a solution having pH value 3 will be_________________?

Byadmin March 4, 2019August 24, 2021

The hydroxyl ion (OH-) concentration in a solution having pH value 3 will be_________________?

A. 10-11
B. 10-10
C. 10-3
D. 10-4

Stoichiometry

500 c.c. each of hydrogen at 700 mm Hg pressure and oxygen at 600 mm Hg pressure are put together in a vessel of 1 litre capacity. The final pressure of the gas mixture will be _____________ mm Hg?

500 c.c. each of hydrogen at 700 mm Hg pressure and oxygen at 600 mm Hg pressure are put together in a vessel of 1 litre capacity. The final pressure of the gas mixture will be _____________ mm Hg?

A. 650
B. 700
C. 600
D. 375

Read More 500 c.c. each of hydrogen at 700 mm Hg pressure and oxygen at 600 mm Hg pressure are put together in a vessel of 1 litre capacity. The final pressure of the gas mixture will be _____________ mm Hg?
Stoichiometry

In physical adsorption, as compared to chemisorption, the________________________?

In physical adsorption, as compared to chemisorption, the________________________?

A. Quantity adsorbed per unit mass is higher
B. Rate of adsorption is controlled by the resistance to surface reaction
C. Activation energy is very high
D. Heat of adsorption is very large

Read More In physical adsorption, as compared to chemisorption, the________________________?
Stoichiometry

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?

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?

A. 283
B. 566
C. 293
D. 141.5

Read More 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?
Stoichiometry

Permeability of bricks is a measure of the___________________?

Permeability of bricks is a measure of the___________________?

A. Refractoriness
B. Melting point
C. Rate at which a fluid will pass through the pores
D. Expansion during heating

Read More Permeability of bricks is a measure of the___________________?
Stoichiometry

Atomic ______________ of an element is a whole number?

Atomic ______________ of an element is a whole number?

A. Weight
B. Number
C. Volume
D. Radius

Read More Atomic ______________ of an element is a whole number?
Stoichiometry

Fireclay bricks is not used for lining the_______________?

Fireclay bricks is not used for lining the_______________?

A. Cupola
B. Gas producer
C. Bottom of hot metal mixer
D. Roof of open hearth furnace

Read More Fireclay bricks is not used for lining the_______________?