Related Questions

Bauxite calcining rotary kilns are lined with __________ bricks.
A Fireclay
B Carbon
C 85% alumina
D Corundum
'Plaster of Paris' is made by partial dehydration of
A Epsom salt
B Gypsum salt
C Blue vitriol
D Green vitriol
Setting of plaster of paris involves
A Dehydration process
B Hydration to form other hydrates
C Oxidation process
D Reduction process
The chemical name of 'Plaster of Paris' commonly used for setting broken bones is
A Calcium nitrate
B Calcium sulphate
C Calcium carbonate
D Calcium chloride
What is plaster of paris made of?
A Limestone
B Quick lime
C Gypsum
D Hydrated lime
Setting of plaster of paris is accompanied with
A Hydration
B Dehydration
C Hydrolysis
D Loss of CO2
What is the chemical formula of Plaster of Paris?
A CaSO4.H2O
B CaSO4.2H2O
C CaSO4
D CaSO4.$$\frac{1}{2}$$H2O
[Identify the most appropriate relationship between the two underlined sentences:] Paris is a city that has long been known as a center of artistic and cultural expression. Paris was home to many famous artists and writers from around the world. (What does the second sentence do?)
A It reinforces the first
B It states an effect
C It draws a conclusion
D It provides a contrast
The average mark obtained by 15 students was 10 and the average mark obtained by 10 students was 15. What was the average mark obtained by all students?
A 10
B 8
C 12
D 15
The average mark obtained by 10 students was 6 and the average mark obtained by 6 other students was 10. What was the average mark obtained by all 16 students?
A 10
B 8
C 7.5
D 8.5

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