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Exam Details

CHEMICAL SCIENCE PART C (DECEMBER 2017) 2017

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Questions 60
Duration 180 mins
Package CSIR NET & SET - Previous Year Papers

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Difficulty distribution

Medium 44 73.3%
Hard 12 20%
Easy 4 6.7%

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Multiple Choices 60 100%

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1
2017 · Unclassified
CHEMICAL SCIENCE PART C (DECEMBER 2017) 2017
The peak area of differential thermal analysis curve is proportional to one or more of the following:
a. mass loss
b. mass of the sample
c. heat of decomposition / phase change
The correct answer is
A
A only
B
B only
C
A and C
D
B and C
2
2017 · Unclassified
CHEMICAL SCIENCE PART C (DECEMBER 2017) 2017
To determine the bond parameters at 25oC, electron diffraction is generally unsuitable for both
A
O3 and NO2
B
Sulfur and dry ice
C
O3 and dry ice
D
NO2 and sulfur
3
2017 · Unclassified
CHEMICAL SCIENCE PART C (DECEMBER 2017) 2017
Match lanthanides in Column I with their properties in Column IICorrect match is
A
a-(iii); b-(ii); c-(i); d-(iv)
B
a-(iv); b-(ii); c-(i); d-(iii)
C
a-(iii); b-(ii); c-(iv); d-(i)
D
a-(ii); b-(iii); c-(iv); d-(i)
4
2017 · Unclassified
CHEMICAL SCIENCE PART C (DECEMBER 2017) 2017
Among the following, species isolobal to CH2 area. CpCr(CO)2b. CpCuc. Ni(CO)2d. Cr(CO)4e. Fe(CO)4
A
A, C and E
B
B, C and D
C
B, C and E
D
A, B and D
5
2017 · Unclassified
CHEMICAL SCIENCE PART C (DECEMBER 2017) 2017
Choose the incorrect statement for the phosphomolybdate anion, [PMo12O40]3-.
A
It has a Keggin structure.
B
Phosphorus is in +5 oxidation state.
C
It is extremely basic.
D
It forms crystalline precipitates with [R4N]+ (R = bulky alkyl or aryl group)
6
2017 · Unclassified
CHEMICAL SCIENCE PART C (DECEMBER 2017) 2017
Consider the following statement(s) for actinides (Ac):a. Oxidation states greater than +3 are more frequent in Ac compared to lanthanides (Ln)b. Some Ac(III) ions show d-d transitionsc. UO22+ and PuO22+ are stabled. Some of actinides do not have radioactive isotopesThe correct answer is
A
a and c
B
a, b and c
C
b,c and d
D
b and d