A. Chlorine dioxide (ClO2)
B. MgO
C. SO2 gas
D. Mercaptans
Related Mcqs:
- Bleaching action of bleaching powder is due to its _____________ properties ?
A. Reducing
B. Oxidising
C. Disinfecting
D. None of these - Bleaching of paper pulp is done with__________________?
A. Activated clay
B. Bromine
C. Chlorine or chlorine dioxide
D. Magnesium sulphite - Which of the following is a bleaching agent added in the detergents to facilitate removal of stains caused due to blood, tea etc ?
A. Sodium silicate
B. Sodium borate
C. Sodium tripolyphosphate (STPP)
D. Caustic soda - Bleaching powder (chemically known as calcium chloro hypochlorite) is commercially produced by the action of chlorine on ____________________?
A. Slaked lime
B. Soda lime
C. Calcium perchlorate
D. None of these - The most economical pulp for the production of newsprint would be the _____________________ pulp?
A. Ground-wood
B. Sulphate
C. Sulphite
D. Semi-chemical - The ideal pulp for the manufacture of paper should have high ____________________ content?
A. Cellulose
B. Lignin
C. Both A. & B.
D. None of these - In sulphate pulp manufacture, the pressure and temperature in the digestor is____________________?
A. 10 atm., 800 °C
B. 10 atm., 170-180°C
C. 1 atm., 170 – 180°C
D. 1 atm., 800°C - Most easily and cheaply available fibrous raw material for paper manufacture available in India is bamboo. The yield of pulp produced from fibrous raw material by mechanical process is about _____________ percent?
A. 75
B. < 10
C. > 30
D. 50 - Production of one ton of dry paper pulp requires about ___________________ tons of bamboo or wood?
A. 1
B. 2.5
C. 5
D. 10 - Out of the following processes of paper pulp manufacture, the maximum corrosion problem in digestion & handling equipments is encountered in the _____________ process?
A. Mechanical
B. Sulphate/Kraft
C. Sulphite
D. Neutral sulphite semi-chemical
