I
APTNSEC
201920
Quest
i
onPaper
&AnswerKey
INDIAN ASSOCIATION OF PHYSICS TEACHERS
NATIONAL STANDARD EXAMINATION IN CHEMISTRY
(NSEC 2019-20)
Question
Number
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
Code
31
keys
C
A
D
D
A
A
D
B
D
A
C
A
D
A
C
B
C
B
B
D
C
A
A
B
D
C
B
C
A
C
D
A
B
C
C
A
C
A
B
A
Answer Keys NSEC -2019; held on November 24, 2019
Code
Code
Code
Code
Code
32
33
34
31
32
keys
keys
keys
Question keys
keys
Number
D
B
C
D
D
B
D
A
A
D
A
D
B
D
D
C
D
D
A
C
B
C
B
C
B
D
C
D
B
C
C
A
A
C
B
C
B
C
B
A
B
C
B
C
B
D
B
C
D
D
A
B
C
A
C
B
C
B
C
A
D
D
C
D
C
D
B
D
A
D
D
A
C
A
D
B
D
D
B
A
C
A
C
A
B
D
B
C
C
A
D
A
A
C
B
C
B
C
A
A
D
A
C
D
B
A
D
A
A
C
D
C
D
A
B
A
B
C
B
D
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
B
C
B
B
D
C
D
B
D
C
C
A
A
C
B
C
B
C
D
A
D
D
B
D
B
D
C
A
B
A
D
D
C
D
A
D
B
C
A
C
C
A
A
B
D
C
B
C
A
A
C
C
D
B
C
C
A
C
A
B
B
D
C
D
B
C
A
B
A
A
D
A
A
D
A
A
D
C
B
D
Code
33
keys
Code
34
keys
C
A
C
A
D
B
A
D
A
A
D
D
C
B
C
A
C
A
B
B
C
D
C
C
A
A
B
D
B
C
A
A
C
D
C
C
B
A
B
A
D
A
D
D
B
D
C
A
D
A
D
B
B
C
B
D
A
C
D
C
B
D
C
D
B
B
C
D
C
B
D
C
C
B
B
A
C
A
A
C