A.Silica flour
B.Tobacco
C.Zinc oxide
D.Starch
Related Mcqs:
- Which of the following material is corrosive?
- All of these form explosive dust except
- Which of the following has the lowest weight/volume ratio?
- Which of the following is used to increase refractoriness of sand?
- The principal ingredients of moulding sands are
- Energy produced from one gram of:
- In the manufacture of urea from ammonia and carbon dioxide
- For the soldering of galvanized iron the flux used is
- The facting sand used in foundry generally consists of
- Which of the following chemicals is responsible for the depletion of ozone layer in the atmosphere?
