Related Questions

Low quality of jute fibre is attributed to
1. Discoloration of fibre
2. Very short fibre strands
3. Reduction of cellulose in fibre
4. Reduction of cell wall strength over-retting decreases the fibre quality due to
Select the correct answer:
Consider the following statements.
1. Fibre optics is based on the principle of total internal reflection.
2. In an optical fibre communication system, power consumption is extremely low
3. Optical fibre communications are free from radio frequency interference.
4. In India, Reliance Group of Industries is engaged in the manufacture of the optical fibre.
Which of these statements are correct?
A glass fibre reinforced epoxy composite is made with 60 wt.% unidirectional continuous glass fibres. The elastic moduli of the glass fibre and the epoxy matrix are 72.5 and 2.4 GPa, respectively. What is the elastic modulus of this composite along the fibre direction, in GPa? The densities of glass fibre and epoxy are 2.58 g/cm3 and 1.14 g/cm3, respectively
Polyethylene terephthalate is prepared by a transesterification reaction.
Low-density Polyethylene shows a higher degree of crystallinity than High-density Polyethylene.
Which of the following materials can be used to make a rotor blade of a wind turbine apart from glass fibre reinforced polyester (GRP)?
__________ is not a polyester fibre.
Consider the following statements :
1. The third rail coach factory is being established at Amethi in U.P.
2. Firozabad in U.P. is famous for pottery industry.
3. U.P. DESCO is a corporation under the Electronics Department.
4. The first polyester fibre factory in U.P. has been set up at Barabanki.
Of these statements :
How is the residual catalyst removed during the manufacture of polyethylene?
Reaction of dimethyl terephthalate (DMT) and ethylene glycol produces