11th Standard Syllabus & Materials
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TN 11th Tamil இயற்கை வேளாண்மை,சுற்றுச்சூழல் -செய்யுள் - மனோன்மணீயம் Important Questions And Answers Study Material - QB365 Set A
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TN 11th Tamil பீடு பெற நில் - துணைப்பாடம் - வாடிவாசல் Important Questions And Answers Study Material - QB365 Set A
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TN 11th Tamil பீடு பெற நில் - செய்யுள் - குறுந்தொகை Important Questions And Answers Study Material - QB365 Set A

Published on: 10/11/2020
11th Standard Chemistry Solutions English Medium Free Online Test One Mark Questions 2020 - 2021
Download Tamil Nadu 11th 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.
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1.
Equimolar solution of non-electrolyte in the same solvent have ____________
same boiling point and same freezing point
different boiling point. and different freezing point
same boiling point but different freezing point
same freezing point but different boiling point
2.
An azeotropic solution of two liquids has a boiling point lower than either of the boiling points of the two liquids when it __________
shows negative deviation
shows positive deviation
shows no deviation
is unsaturated
3.
Which of the following statment is true?
Molarity of solution is idependent of temperature
Molality of solution is independent of temperature
Mole fraction of solute is dependent on temperature
The unit of molality is mol dm-3
4.
If solute and solvent interactions are more than solute - solute and solvent - solvent interactions then ___________
It is ideal solution
It is non-ideal solution with positive deviation
It is non-ideal solution with negative deviation
Can't be predicted
5.
The normality of 10% weight/volume) acetic and is ____________
1 N
10 N
1.7 N
0.83 N
6.
What is the boillng point of 1 molal aqueous solution of NaCI [Kb = 0.52 K molal-I].
99.48°C
98.96°C
100.52°C
101.04°C
7.
Which of the following has maximum freezing point?
Pure H20
0.1 M NaCl (aq)
0.01 M NaCl (aq)
0.5 M NaCl (aq)
8.
Depression in freezing point for 1 M urea, 1 M NaCI and 1 M CaCI2 are in the ratio of ____________
1: 2 : 3
1: 1 : 1
3: 2 : 1
Data insufficient
9.
The value of ebulllescopic constant depends upon ______________
\(\triangle\)Hsolution
nature of solvent
nature of solute
freezing point of solution
10.
Vapour pressure is the pressure exerted by vapours ____________
in equilibrium with liquid
in any condition
in an open system
in atmospheric conditions
11.
The temperature at which the vapour pressure of a liquid equals external pressure is called __________
freezing point
boiling point
melting point
critical temperature
12.
The blocking of capillaires due to sudden release of bubbles of N2 gas in blood is known as ______
bends
blends
mends
all of these
13.
The example of solid solution is __________
glucose in water
copper in gold
camphor in nitrogen
oxygen in nitrogen
14.
The correct equation for the degree of an associating solute, 'n' molecules of which undergoes association in solution, is _____________
\(\alpha=\frac{n(i-1)}{n-1}\)
\(\alpha^2=\frac{n(1-i)}{(n-1)}\)
\(\alpha=\frac{n(i-1)}{1-\mathrm{n}}\)
\(\alpha=\frac{n(1-i)}{n(1-i)}\)
15.
For a solution, the plot of osmotic pressure (\(\pi\)) verses the concentration (c in mol L–1) gives a straight line with slope 310R where 'R' is the gas constant. The temperature at which osmotic pressure measured is ____________
310 x 0.082 K
310oC
37oC
\({310\over 0.082}K\)
16.
Normality of 1.25M sulphuric acid is ___________
1.25 N
3.75 N
2.5 N
2.25 N
17.
The empirical formula of a nonelectrolyte(X) is CH2O. A solution containing six gram of X exerts the same osmotic pressure as that of 0.025 M glucose solution at the same temperature. The molecular formula of X is ____________
C2H4O2
C8H16O8
C4H8O4
CH2O
18.
According to Raoults law, the relative lowering of vapour pressure for a solution is equal to __________
mole fraction of solvent
mole fraction of solute
number of moles of solute
number of moles of solvent
19.
Which one of the following gases has the lowest value of Henry's law constant ?
N2
He
CO2
H2
20.
The molality of a solution containing 1.8g of glucose dissolved in 250 g of water is _____________
0.2 M
0.01 M
0.02 M
0.04 M
1.
(a)
same boiling point and same freezing point
2.
(b)
shows positive deviation
3.
(b)
Molality of solution is independent of temperature
4.
(c)
It is non-ideal solution with negative deviation
5.
(c)
1.7 N
6.
(d)
101.04°C
7.
(a)
Pure H20
8.
(a)
1: 2 : 3
9.
(b)
nature of solvent
10.
(a)
in equilibrium with liquid
11.
(b)
boiling point
12.
(a)
bends
13.
(b)
copper in gold
14.
(c)
\(\alpha=\frac{n(i-1)}{1-\mathrm{n}}\)
15.
(c)
37oC
16.
(c)
2.5 N
17.
(b)
C8H16O8
18.
(b)
mole fraction of solute
19.
(c)
CO2
20.
(b)
0.01 M
11th Standard Syllabus & Materials
11th Standard
TN 11th Tamil பீடு பெற நில் - செய்யுள் - காவடிச்சிந்து Important Questions And Answers Study Material - QB365 Set A
NEW11th Standard
TN 11th Tamil பீடு பெற நில் - உரைநடை - மலை இடப்பெயர்கள் : ஓர் ஆய்வு Important Questions And Answers Study Material - QB365 Set A
NEW11th Standard
TN 11th Tamil மாமழை போற்றுதும் - துணைப்பாடம் - யானை டாக்டர் Important Questions And Answers Study Material - QB365 Set A
NEW11th Standard
TN 11th Tamil மாமழை போற்றுதும் - செய்யுள் - ஐங்குறுநூறு Important Questions And Answers Study Material - QB365 Set A
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