For the manufacture of glass, various steps are given below. Arrange the steps in a proper sequence
(a) Melting of raw materials
(b) Adding cullet to raw materials
(c) Conversion of raw material to a fine powder
(d) Annealing
(e) Refining

a b c d e

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b a c e d

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c b a e d

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b a e d c

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Solution

The correct option is D c b a e d
Glass can be manufactured in the following sequence:
(c) Conversion of raw material to a fine powder.
(b) Adding cullet to raw materials.
(a) Melting of raw materials
(e) Refining
(d) Annealing

So the correct sequence is (C) c b a e d.

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Q. A firm produces an alloy having the following specifications:

(i)

specific gravity

\leq 0.98

(i i)

chromium

\geq 8

percent

(i i i)

melting point

\geq 450^{0}

C
Raw materials

A, B

and

C

having the properties shown in the table can be used to make the alloy.

Property	Property of raw material A	Property of raw material B	Property of raw material C
Specific gravity	$0.92$	$0.97$	$1.04$
Chromium	$7$ percent	$13$ percent	$16$ percent
Melting point	$440^{0}$ Celsius	$490^{0}$ Celsius	$480^{0}$ Celsius