11th Standard Syllabus & Materials
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TN 11th Tamil மொழி கலை -செய்யுள் - ஒவ்வொரு புல்லையும் 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 English Medium Free Online Test Volume 1 One Mark Questions with Answer Key 2020
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.
Questions + Answers key
Take MCQ Chemistry Test
1.
Which one of the following is true about metallic character when we move from left to right in a period and top to bottom in a group?
Decreases in a period and increases along the group
Increases in a period and decreases in a group
Increases both in the period and the group
Decreases both in the period and in the group
2.
Statement- I: Ionization enthalpy of Be is greater than that of B.
Statement- II: The nuclear charge of B is greater than that of Be.
Statement-I and II are correct and statement-II is the correct explanation of statement-I.
Statement-I and statement-II are correct but statement-II is not the correct explanation of statement-I.
Statement-I is correct but statement-II is wrong.
Statement-I is wrong but statement-II is correct.
3.
In which of the following entropy decreases?
melting of ice
evaporation of water
crystallization of sugar
dissolution of salt
4.
Consider the following statements.
(i) Work is a state function.
(ii) Work brings a temporary effect in the surroundings.
(iii) Work appears only at the boundary of the system.
Which of the above statements is/are not correct?
(iii) only
(i) and (ii)
(i) and (iii)
(ii) and (iii)
5.
Which one of the following is an example for closed system?
Hot water contained in a thermos flask
A gas contained in a cylinder fitted with a piston
All living things
Hot water contained in a open beaker
6.
When caesium salt is subjected to flame test, the colour produced is __________
lilac
yellow
blue
crimson red
7.
The empirical formula of Alkene is _______________
CH
CH2
CH3
CH2O
8.
Which of the following is insoluble in water?
LiF
NaCI
KBr
NaBr
9.
Which one of the following does not have intramolecular hydrogen bonding?
water
o-nitrophenol
Salicylaldehyde
Salicylic acid
10.
For the reaction H2+I2 \(\leftrightharpoons \)2HI, \(\Delta\)H = 12.40 Kcal the heat of formation of HI is __________
12.4 Kcal mol-1
-12.4 Kcal mol-1
-6.20 Kcal mol-1
6.20 Kcal mol-1
11.
\({ \Psi }^{ 2 }\) = 0 represents:
a node
an orbital
angular wave function
wave function
12.
Which of the following pairs of gases will diffuse at the same time through a porus plug?
CO, NO2
NO, C2H6
NO2, CO2
NH3,PH3
13.
The scope of the plot between PV and P at constant temperature is _________
zero
1
\(\frac{1}{2}\)
\(\frac{1}{\sqrt2}\)
14.
If 'Z' is a compressibility factor, Vander waals equation at low pressures can be written as ___________
\(Z=1+\frac{Pb}{RT}\)
\(Z=1+\frac{RT}{Pb}\)
\(Z=1-\frac{a}{VRT}\)
\(Z=1-\frac{Pb}{RT}\)
15.
When sodium peroxide is treated with dilute sulphuric acid the products are _____________
sodium sulphate and water
sodium sulphate and oxygen
sodium sulphate, hydrogen and oxygen
sodium sulphate and hydrogen peroxide
16.
The process in which no heat can flow into or out of the system are called ___________ process.
isothermal
isobasic
isochoric
adiabatic
17.
Match the list I with list II and select the correct answer using the code given below.
| List-I | List-II |
| A. Permanent Gas | 1. 2a/Rb |
| B. Temporary Gas | 2. N2 |
| C. Ti | 3. low Tc |
| D. Joule Thomson Effect | 4. NH3 |
| A | B | C | D |
| 2 | 3 | 4 | 1 |
| A | B | C | D |
| 4 | 1 | 2 | 3 |
| A | B | C | D |
| 1 | 2 | 3 | 4 |
| A | B | C | D |
| 3 | 4 | 1 | 2 |
18.
Alkaline earth metals belong to _____ group of the periodic table
1
2
17
18
19.
Atomicity of nitrogen is __________.
1
2
3
Zero
20.
Characteristic of transition elements is incomplete ____________
d-orbitals
f-orbitals
p-orbitals
s-orbitals
21.
The absolute zero is _____________
-273oC
273oC
OK
both a and c
22.
Which of the following does not represent the mathematical expression for the Heisenberg uncertainty principle?
\(\triangle x.\triangle p\ge \frac { h }{ 4\pi } \)
\(\triangle x.\triangle v\ge \frac { h }{ 4\pi m } \)
\(\triangle E.\triangle t\ge \frac { h }{ 4\pi } \)
\(\triangle E.\triangle x\ge \frac { h }{ 4\pi } \)
23.
Which of the following has highest hydration energy __________
MgCl2
CaCl2
BaCl2
SrCI2
24.
25.
When hydrogen peroxide is shaken with an acidified solution of potassium dichromate in presence of ether, the ethereal layer turns blue due to the formation of _____________
Cr2O3
\({ CrO }_{ 4 }^{ 2- }\)
CrO(O2)2
none of these
1.
(a)
Decreases in a period and increases along the group
2.
(b)
Statement-I and statement-II are correct but statement-II is not the correct explanation of statement-I.
3.
(c)
crystallization of sugar
4.
(b)
(i) and (ii)
5.
(b)
A gas contained in a cylinder fitted with a piston
6.
(c)
blue
7.
(b)
CH2
8.
(a)
LiF
9.
(a)
water
10.
(d)
6.20 Kcal mol-1
11.
(a)
a node
12.
(b)
NO, C2H6
13.
(a)
zero
14.
(c)
\(Z=1-\frac{a}{VRT}\)
15.
(d)
sodium sulphate and hydrogen peroxide
16.
(d)
adiabatic
17.
(d)
| A | B | C | D |
| 3 | 4 | 1 | 2 |
18.
(b)
2
19.
(b)
2
20.
(a)
d-orbitals
21.
(d)
both a and c
22.
(d)
\(\triangle E.\triangle x\ge \frac { h }{ 4\pi } \)
23.
(a)
MgCl2
24.
(a)
25.
(c)
CrO(O2)2
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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