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Mechanical pulp is pulp produced by using only mechanical attrition to pulp lignocellulosic materials; no chemicals are used.
A water tanker can be filled by 2 pipes A & B separately in 16 min & 32 min respectively. The outlet of the tanker is partially open and it can empty the full tanker completely in 1 hour 4 min. Pipes A & B were opened simultaneously for 9 min to fill the tanker but the partially open outlet was not closed. After 9 min the pipes A & B were closed and the tanker then went to Mohan's house, 6 km away to deliver water. If the tanker moved at a constant speed of 36 km/hr, approximately what percentage of the tanker was full, when it reached Mohan's house? 
Tank can be filled by pipe A alone in 90 min and by pipe B alone in 60 min. There is a tap in bottom of tank which can empty the tank in 18 min. In a condition when tank is filled by pipe A and B for 20 min and then close and open the bottom tap. The time taken by tap to empty the tank is ….. min.
A mouse is running at the speed of 15 m/min. After 12 min a cat saw him and started running to catch the mouse at the speed of 16 m/min. How much time will it take to catch the mouse if the cat can boost his speed by 1 m/min in every 5 min?
Three pipes A, B, C can individually fill a tank in 45 min., 60 min., and 30 min. respectively. If all the three pipes are simultaneously opened in an empty tank, such that pipes A and B are closed after 9 min. and 12 min. respectively, how much time will pipe C take alone to fill the remaining part of the tank?
Five clocks ring simultaneously at 5 pm. They ring at regular intervals of 12 min, 15 min, 20 min, 30 min, and 60 min respectively. The time when all five clocks ring together next is:
___________ is mainly made from kraft or sulfite softwood pulps and may contain limited amounts of mechanical pulp or recycled fiber.
Bleaching mechanical pulps is called _________ to distinguish it from bleaching of chemical pulps.
Cellulose viscosity of mechanical pulps and of high yield pulps are not measured since it’s quite low .
Bleaching with H2O2, is not common for chemical pulps. (But this is changing somewhat as mills look for chlorine-free systems.) It’s used for brightening mechanical pulps. What is the name of the alternative method utilized?