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Published on: 13/10/2020
12th Standard Chemistry English Medium Free Online Test Creative One Mark Questions with Answer Key - Part Five
Download Tamil Nadu 12th Standard Chemistry question papers, model tests, one-mark questions, important questions, and public exam papers in PDF format. Free study materials and answer keys for TN State Board students.
Questions + Answers key
Take MCQ Chemistry Test
1.
Which among the following statement is incorrect regarding urotropine?
It is an urinary antiseptic
It is hexa methylene diamine
Used in the preparation of an explosive
All the above
2.
The function of FeCl3 in the conversion of Fe(OH)3 precipitate into a colloid is_________.
peptising agent
emulsifying agent
reducing agent
precipitating agent
3.
The common name for 4-hydroxy toluene is ________.
p-cresol
m-cresol
resoricinol
catechol
4.
Buffer index is _______.
\(\beta =\frac { dB }{ p{ K }_{ a } } \)
\(\beta =\frac { dB }{ d(pH) } \)
\(\beta =\frac { dB }{ pH } \)
\(\beta =\frac { dB }{ pOH } \)
5.
Which is optically active?
n-butyl alcohol
isobutyl alcohol
2-butanol
t-butyl alcohol
6.
During decomposition of an activated complex.
energy is always released
energy is always absorbed
energy does not change
products may be formed.
7.
Silicones are ______.
ortho silicates
water repellent thermal insulators
both (a) and (b)
None of these
8.
CrO3 is coloured due to_______.
Low L.E
Crystal defects
Charge transfer spectra
Unpaired electrons
9.
Pick out the alloy that contains a non-metal as a constituent in it ________.
Brass
Bronze
Steel
Invar
10.
Among the following complexes the one which shows zero crystal field stabilisation energy is _______.
[Mn(H2O)6]3+
[Fe(H2O)6]3+
[CO(H2O)6]2+
[CO(H2O)6]3+
1.
(b)
It is hexa methylene diamine
2.
(a)
peptising agent
3.
(a)
p-cresol
4.
(b)
\(\beta =\frac { dB }{ d(pH) } \)
5.
(c)
2-butanol
6.
(a)
energy is always released
7.
(c)
both (a) and (b)
8.
(c)
Charge transfer spectra
9.
(c)
Steel
10.
(b)
[Fe(H2O)6]3+
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History
Computer Applications
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Computer Science
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