If a goldsmith wants to make jewellery of gold and silver, then he has to melt them. To do this,
he will use the_L_zone of the flame, as this zone is the ___İİ_ zone of the flame. The
information in which alternative completes the given statement? *
A) i-Innermost, ii-Hottest
B) i-Innermost, ii-Moderately hot
C) i-Outermost, ii-Moderately hot
D) i-Outermost, ii-Hottest
2. What are the essential requirements for a fire to start and continue?
(i) Fuel
(ii) Ari (oxygen)
(iii) Heat
A) Only (i) and (ii)
B) Only (ii) and (iii)
C) Only (i) and (iii)
D) (i), (ii) and (iii)
3. To purify copper metal by electrolysis which of the following used as electrolyte *
A) Nacl solution
B) CusO4 solution
C) H2S04 solution
D) MgSO4 solution
E) None of these
Answers
Answered by
1
Answer:
ques. 2 . option A is the correct
Answered by
1
Answer:
a is correct because it is hottest so
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