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 என்னுயிர் என்பேன் -துணைப்பாடம் - இசைத்தமிழர் இருவர் Important Questions And Answers Study Material - QB365 Set A
NEW11th Standard
TN 11th Tamil மொழி கலை -செய்யுள் - ஒவ்வொரு புல்லையும் Important Questions And Answers Study Material - QB365 Set A
NEW11th Standard
TN 11th Tamil பீடு பெற நில் - இலக்கணம் - பகுபத உறுப்புகள் Important Questions And Answers Study Material - QB365 Set A
NEW11th Standard
TN 11th Tamil பீடு பெற நில் - துணைப்பாடம் - வாடிவாசல் Important Questions And Answers Study Material - QB365 Set A
NEW11th Standard
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 One Mark Questions with Answer Key 2020 - Part Eight
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.
Bhopal Gas Tragedy is a case of _____________.
thermal pollution
air pollution
nuclear pollution
land pollution
2.
Which one of the following is non aromatic?
3.
Equimolal aqueous solutions of NaCl and KCl are prepared. If the freezing point of NaCl is –2oC, the freezing point of KCl solution is expected to be ____________
-2oC
-4oC
-1oC
0oC
4.
Which one of the following is used for mercerising cotton fabrics?
KOH
NaOH
Na2CO3
NaHCO3
5.
Which metal is used in making electrochemical cells?
Caesium
Lithium
Calcium
Barium
6.
Among the following elements, which has the least electron affinity?
Phosphorous
Oxygen
Sulphur
Nitrogen
7.
Which of the following statements related to the modern periodic table is incorrect?
The p-block has 6 columns, because a maximum of 6 electrons can occupy all the orbitals in a p-subshell.
The d-block has 8 columns, because a maximum of 8 electrons can occupy all the orbitals in a d-subshell.
Each block contairis a number of columns equal to the number of electrons that can occupy that subshell.
The block indicates value of azimuthal quantum number (1) for the last subshell that received electrons in building up the electronic configuration.
8.
Which of the following does not have zero electron gain enthalpy?
Be
Cl
Mg
N
9.
Celestite and strontianite are the ores of ______
cesium
strontium
magnesium
barium
10.
Which of the following mixture of gases is called water gas?
CO2(g)+ H2(g)
CO(g)+ N2(g)
CO(g)+ H2(g)
N2(g)+ H2(g)
11.
Gypsum is _________
CaSO4.H2O
CaSO4.1/2H2O
CaSO4.1/4H2O
CaSO4.2H2O
12.
Identify the correct statements about barium.
(i) It shows photoelectric effect
(ii) It is silvery white metal
(iii) It forms Ba(NO3)2 which is used in preparation of green tire
Both (i) and (iii)
(ii) and (iii)
Only (ii)
(i),(ii),(iii)
13.
_______ is unstable in air and is kept in CO2 atmosphere to avoid decomposition.
BeCO3
MgCO3
CaCO3
BaCO3
14.
The radioactive element of group 2 is ______
Strontium
Radium
Beryllium
Francium
15.
Which hydroxide decomposes on heating?
NaOH
RbOH
KOH
LiOH.
16.
Which of the following oxides is the most basic in nature?
Na2O
BeO
Li2O
H2O
17.
Atoms are too small with a diameter of 10-10 m and weigh approximately ______________.
10-27 kg
10-27 g
10-31 kg
10-31
18.
Identify the correct mathematical expression of Graham's law of diffusion __________
\(\frac { { r }_{ 2 } }{ { r }_{ 1 } } =\sqrt { \frac { { M }_{ 2 } }{ { M }_{ 1 } } } \)
\({ r }_{ 1 }r_{ 2 }=\sqrt { \frac { { M }_{ 2 } }{ { M }_{ 1 } } } \)
\(\frac { { r }_{ 1 } }{ { r }_{ 2 } } =\sqrt { \frac { { M }_{ 2 } }{ { M }_{ 1 } } } \)
\(\frac { { r }_{ 1 } }{ { r }_{ 2 } } ={ \left[ \frac { { M }_{ 2 } }{ { M }_{ 1 } } \right] }^{ 2 }\)
19.
The fixed circular paths around the nucleus are caused ____
orbits
Orbitals
nucleons
Mesons
20.
Absolute zero is ________
-273oC
0 K
temperature at which no substance exists in gaseous state
all of these
21.
______ is the lightest metal known.
Na
Li
Mg
Al
22.
The vertical columns in the periodic table are called as ___________
family
group
period
both (a) and (c)
23.
The atomic weight of Au is ______
195
197
198
196
24.
Which of the following is Dobereiner's triad?
Ne,Ca,Na
H2, N2, O2
Li, Na, K
Na, Br, K
25.
In case of alkali metal halides, the ionic character increases in the order ____________
MF < MCI < MBr < MI
MI < MBr < MCI < MF
MI < MBr
none of these
1.
(b)
air pollution
2.
(d)
3.
(a)
-2oC
4.
(b)
NaOH
5.
(b)
Lithium
6.
(d)
Nitrogen
7.
(b)
The d-block has 8 columns, because a maximum of 8 electrons can occupy all the orbitals in a d-subshell.
8.
(b)
Cl
9.
(b)
strontium
10.
(c)
CO(g)+ H2(g)
11.
(d)
CaSO4.2H2O
12.
(b)
(ii) and (iii)
13.
(a)
BeCO3
14.
(b)
Radium
15.
(d)
LiOH.
16.
(a)
Na2O
17.
(a)
10-27 kg
18.
(c)
\(\frac { { r }_{ 1 } }{ { r }_{ 2 } } =\sqrt { \frac { { M }_{ 2 } }{ { M }_{ 1 } } } \)
19.
(a)
orbits
20.
(d)
all of these
21.
(b)
Li
22.
(b)
group
23.
(b)
197
24.
(c)
Li, Na, K
25.
(b)
MI < MBr < MCI < MF
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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