Plaster of Paris is __________________?

Related Mcqs:

1. Setting of plaster of Paris is accompanied with___________________?

   A. Hydration
   B. Dehydration
   C. Hydrolysis
   D. Loss of CO2

2. Heating of _______________ to 120°C, produces plaster of paris ?

   A. Blue vitriol
   B. Gypsum
   C. Calcium silicate
   D. Calcium sulphate

3. Dechlorination of treated water is necessary to __________________?

   A. Remove residual turbidity
   B. Reduce the bacterial load on filter
   C. Control taste and odour
   D. Remove chlorinous taste

4. The most reactive allotropic form of phosphorus is __________________ phosphorus?

   A. Red
   B. Yellow
   C. Violet
   D. Black

5. White phosphorous is stored under water, because __________________?

   A. It does not react with water
   B. It is poisonous
   C. Its kindling temperature in dry air is very low
   D. It is unstable

6. Insulin is an __________________ drug?

   A. Anti-malarial
   B. Anti-TB
   C. Antibiotic
   D. None of these

7. High temperature carbonisation of coal takes place at __________________ °C?

   A. 2000
   B. 700
   C. 1100
   D. < 500

8. Commercial production of calcium carbide requires limestone and __________________ as raw materials?

   A. Coke
   B. Sand
   C. Soda ash
   D. Fuel oil

9. Brackish water which contains mostly dissolved salt, can be purified by the __________________ process?

   A. Reverse osmosis
   B. Sand filter
   C. Lime soda
   D. Permutit

10. Sudden temperature fluctuation does not affect pyrex glass, because of its __________________?

    A. Low co-efficient of expansion
    B. High co-efficient of expansion
    C. High melting point
    D. Both B. and (C)