Question

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87. Which form of iron has highest carbon content?
(A) Wrought iron
(B) Mild steel
(C) Stainless steel
(D) Cast iron
88. Bakelite is obtained from
uite is obtained from phenol by reaction with:
(A) acetaldehyde *
(B) acetal
(C) formaldehyde a
(D) chlorobenzene.
89. Two flasks A and B of same size contain 2g of H,
and 2g of N, respectively at same temperature. The
number of molecules in flask Ais :
(A) Same as those in flask B
(B) Less than those in flask B
(C) Greater than those in flask B
(D) Exactly half than those in flask B
1.90. AgBr shows:
(A) Schottky defect
(B), Frenkel defect
Both Schottky and Frenkel defects
(D) None of these
1. 91. For the cell reaction,
Zn (s) + Cu2+ (aq) → Cu (s) + Zn2+ (aq),
E = 1.10V, AGº is
(A) 212.3 KJ •
(B) 106.05 KJ
(C) -212.3 KJ
(D) -424.6 KJ
o
Banaleve
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Answer 1

Q no.87=(A) Wrought iron

Q no.88=(C) Formaldehyde

Answer 2

88 A

89. c

is the answer...............