Stoichiometry Mcqs for Chemical
Stoichiometry Mcqs for Chemical, this topic has 382 mcqs, It takes five to ten minutes to complete this free Stoichiometry Mcqs for Chemical test. You will see 4 or 5 option of each question. You must choose / think only one option and then press on answer key for check right answer. Practice "Stoichiometry Mcqs for Chemical" MCQs and share with your friends, brothers, sisters.
Stoichiometry Mcqs for Chemical (Total Quiz: 382)
MCQ: Capacity of a refractory brick to withstand-sudden changes in temperature is denoted by the property called_________________?
- Spalling resistance
- Refractoriness
- Refractoriness under load (RUL)
- None of these
A
MCQ: Refractoriness/fusion points of ‘Superduty’ refractories is _____________ °C?
- 1520-1630
- 1630-1670
- > 1730
- > 2000
C
MCQ: With increase in the porosity, thermal spalling resistance of fireclay brick_______________?
- Increases
- Decreases
- Remain same
- May increase or decrease
A
MCQ: Quartz is__________________?
- Stable form of silica upto 870°C
- Converted to Tridymite on firing between 870 to 1470°C
- Transformed to Cristobalite on heating above 1470°C
- All A., B. and C.
D
MCQ: Pure oxide refractories are generally monocrystalline in nature and are self bonded ______________ bricks are generally used as moderator in nuclear reactors?
- Beryllia
- Carborundum
- Corundum
- Thoria
A
MCQ: Ceramic recuperators used for waste heat recovery from high temperature flue gas going out of the furnace is made of ________________?
- Fireclay
- Silicon carbide
- Corundum
- Siliceous fireclay
B
MCQ: Refractory bricks having lower porosity have _____________________?
- High insulating properties
- Low heat capacity
- Low thermal conductivity
- Greater strength
D
MCQ: Silica bricks are never used for lining the_________________?
- Beehive coke ovens
- By-product coke ovens
- Dome of blast furnace stoves
- Roof of open hearth furnace
A
MCQ: Fireclay refractories___________________?
- Are not resistant to the action of basic slags
- Combine with salts (e.g. chlorides sulphates etc.) & bases (e.g. lime, magnesia etc.) forming fusible aluminates silicates etc
- Shrink during firing
- All A., B. and C.
D
MCQ: Fireclay bricks is not used for lining the_______________?
- Cupola
- Gas producer
- Bottom of hot metal mixer
- Roof of open hearth furnace
C