Yeast is used in the manufacture of ____________________?

Related Mcqs:

1. Contact process of sulphuric acid manufacture ____________________?

   A. Yields acid of higher concentration than chamber process
   B. Yields acids of lower concentration than chamber process
   C. Is obsolete
   D. Eliminates absorber

2. Double Contact Double Absorption (DCDA) process is the most recent process for the manufacture of ____________________?

   A. Nitric acid
   B. Sulphuric acid
   C. Ammonium sulphate
   D. Hydrochloric acid

3. In the manufacture of viscose rayon, the raw material used industrially is ____________________?

   A. Eucalyptus wood
   B. Bamboo
   C. Bagasse
   D. Fine teak wood

4. The ideal pulp for the manufacture of paper should have high ____________________ content?

   A. Cellulose
   B. Lignin
   C. Both A. & B.
   D. None of these

5. High magnesia lime is added to hot sugar cane juice (during the manufacture of sugar) to__________________?

   A. Flocculate the impurities
   B. Facilitate fast filtration
   C. Both A. and B.
   D. Neither A. nor B.

6. Which of the following may be viewed as a catalyst in the manufacture of soda ash by Solvay process ?

   A. NH3
   B. NaCl
   C. CaO
   D. Coke

7. Nitro-glycerine absorbed in wood flour, sodium nitrate or ammonium nitrate is commercially used as controlled explosive called dynamite. The raw material used for its manufacture are glycerine, nitric acid and___________________?

   A. Sulphuric acid
   B. Phosphoric acid
   C. Hydrochloric acid
   D. Hydrofluoric acid

8. Oils are partially hydrogenated (not fully) to manufacture Vanaspati, because fully saturated solidified oils________________?

   A. Cause cholesterol build up and blood clotting
   B. Are prone to rancid oxidation
   C. Always contain some amount of nickel (as their complete removal is very difficult)
   D. Have affinity to retain harmful sulphur compounds

9. Solvay process is not used for the manufacture of potassium carbonate, because of the reason that potassium bicarbonate ?

   A. Is prone to thermal decomposition
   B. Has high water solubility and is unstable
   C. Is soluble in ammonium chloride and potassium chloride solution
   D. All A , B. and C.

10. The major constituent of black liquor generated during paper manufacture is sodium___________________?

    A. Sulphate
    B. Carbonate
    C. Hydroxide
    D. Bi-carbonate