FIBRE TO FABRIC L3

If l, l_(1), l_(2) and l _(3) be respectively the radii of the in-circle and the three escribed circles of a Delta ABC, then find l_(1)l_(2) l_(3)-l(l_(1)l_(2) +l_(2) l_(3)+l_(1) l_(3)).

In one process of waterproofing, a fabric is expsoed to (CH_(3))_(2) SiCl vapour. The vapour reacts with (OH) groups on the surface of the fabric or with traces of H_(2) O to form waterproofing film of by the reaction Where n is large integer. The waterproofing film is deposited on the fabric layer upon layer. Each layer is 10 Å thich [the thickness of the (CH_(3))_(2) SiO group]. How much (CH_(3))_(2) SiCl_(2) is required to waterproof one side of a piece of a fabric, 1.0 m by 3.0 m , with a film 1000 layers thick? The density of the film is 1.0 g cm^(-3) . (Atomic weight of Si = 28 and Cl = 35.5 )

Consider the lines given by L_1: x+3y-5=0 L_2:3x-k y-1=0 L_3:5x+2y-12=0 Column I|Column II L_1,L_2,L_3 are concurrent if|p. k=-9 One of L_1,L_2,L_3 is parallel to at least one of the other two if|q. k=-6/5 L_1,L_2,L_3 form a triangle if|r. k=5/6 L_1,L_2,L_3 do not form a triangle if|s. k=5

In a fabric, cotton and synthetic fibres are in the ratio of 2: 3. what is the percentage of cotton fibre in the fabric?

A: Bast fibres are collenchymatous fibres. R: Fibres are absent in secondary phloem.

Differentiate between Collagen fibres and elastin fibres

Assertion: Phloem fibres or bast fibres are made up of collenchymatous cells. Reason: Phloem fibres are generally found in primary phloem.

(A]: Cotton is a filling fibre only. [R]: Cotton is a bast fibre

In a muscle fibre :

[A] : In vertebrates, motor fibres to striped muscle, parasympathetic fibres to smooth muscle. and preganglionic sympathetic fibres are cholinergic. [R]: Cholinergic designates the type of nerve fibre that releases acetylcholine from its ending when stimulated by a nerve impulse.