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Published on: 13/10/2020
12th Standard Chemistry English Medium Free Online Test Creative 1 Mark Questions - Part Three
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.
When one coulomb of electricity is passed through an electrolytic solution the mass deposited on the electrode is equal to ______.
equivalent weight
molecular weight
electrochemical equivalent
one gram
2.
The conjugate base of NH-2 is _______.
NH-
NH3
NH+3
NH2-
3.
The dispersion medium is a liquid and the dispersed phase is a gas. Name the colloid _______.
sol
foam
liquid aerosol
solid aerosol
4.
Nitric oxide (NO) reacts with oxygen to produce nitrogen dioxide
2NO(g) + O2(g) ⟶ 2NO2(g)
If the mechanism of reaction is ______.
NO + O2 \(\overset { K }{ \rightleftharpoons } \) NO3 (fast)
NO3 + NO \(\overset { { K }_{ 1 } }{ \rightleftharpoons } \) NO2 + NO2 (slow)
Rate = K' [NO] [O2]
Rate = K' [NO] [O2]2
Rate = K' [NO]2 [O2]
Rate = K' [NO]3 [O2]
5.
Which among the following ion is not formed?
F3-
C13-
Br3-
I3-
6.
Which of the following statement is correct?
On increasing temperature, the coordination number of solid remains unchanged.
On increasing pressure, the co-ordination number of solid increases.
On increasing pressure, the co-ordination number of solid decreases.
On increasing temperature, the coordination number of solid increases
7.
Oxidation state exhibited by group 13 elements is ______
+1, +2 and +3
+1 and +3
+1 and +4
+2 +3 and +4
8.
Which of the following statement is correct for 3d-transition element?
All metals except Zn and Sc form 'MO' Oxide
All metals except Sc forms 'MO' Oxide
All metals except Zn forms 'MO' Oxide
All metals except Mn forms 'MO' Oxide
9.
Identify the halide ore among the following
Epsom Salt
Pyrolusite
Anglesite
Rock Salt
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.
(c)
electrochemical equivalent
2.
(d)
NH2-
3.
(b)
foam
4.
(c)
Rate = K' [NO]2 [O2]
5.
(a)
F3-
6.
(b)
On increasing pressure, the co-ordination number of solid increases.
7.
(b)
+1 and +3
8.
(b)
All metals except Sc forms 'MO' Oxide
9.
(d)
Rock Salt
10.
(b)
[Fe(H2O)6]3+
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