11th Standard Syllabus & Materials
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Published on: 10/11/2020
11th Standard Chemistry English Medium Free Online Test One Mark Questions with Answer Key 2020 - Part Six
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.
Which one of the following is a gem-dihalide?
CH3CHCl2
\(\underset { \overset { | }{ Cl } }{ CH_2 } -\underset { \overset { | }{ Cl } }{ CH_2 } \)
CH3 - CH2CI
C6H4Cl2
2.
Which of the following pair functional groups represents ambident nucleophiles?
-SH & - OH
CN & -NO2
-Br & -Cl
-O- &-CHO
3.
Which of the following mechanism is followed in the halogenation of alkanes in the presence of U-V light?
Nucleophilic substitution
Electrophilic addition
Free radical substitution
Elimination reaction
4.
Which one of the following is an example for negative mesomeric effect ?
-SH
-SR
-NH2
-NO2
5.
Which one of the following is called ferric ferrocyanide?
Na4[Fe(CN)6]
Na4[Fe(CN)6]3
Fe4[Fe(CN)6]
Fe4[Fe(CN)6]3
6.
Which structure is named as 3-chlorocyclobut-1-ene?
7.
Which one of the following has linear shape?
I3-
ICI4-
BrF5
IOF5
8.
Oxidation of C6H5CH2CI gwith alk, KMnO4 gives ___________
C6H3CHO
C6H5COOH
C6H5CH2OH
C6H5CH3
9.
How does dizzonium salt (C6H5N2+Cl-) decompose?
C6HSCI+N2
C6H5Br + N2
only b
both a& b
10.
The molecule that has linear structure is ___________
CO2
NO2
SO2
SiO2
11.
Statement I : Primary alkyl halides on oxidation with DMSO gives aldehydes.
Statement II : DMSO is used as polar aprotic solvent.
Both statement I and statement II are true individually and statement II explains statement
Both statement I and statement II are true individually but statement II does not explain statement 1.
Only statement Iis true, but statement II is false.
Both statement I and II are false
12.
The best reagent for converting an alcohol into the corresponding chloride is
PCl3
PCl5
SOCl2
HCl/ZnCl2
13.
The number of chain isomers possible in C5 HI2 is ____________
2
3
4
5
14.
In -NO2, -NH2, -SO3H, the decreasing order of I II III -I effect is ___________
I > II > III
I > III > II
III > II > I
III > I > II
15.
The hybridisations of central and terminal carbon atoms in 
are respectively.
sp and sp
sp2 and sp3
sp and sp2
sp2 and sp
16.
Which one of the following names does not fit a real name?
3 – Methyl –3–hexanone
4–Methyl –3– hexanone
3– Methyl –3– hexanol
2– Methyl cyclo hexanone
17.
The standard value of enthalpy of combustion of benzoic acid is ______
-3227 kJ mol-1
+3227 kJ mol-1
-32-27 kJ mol-1
+32.27 kJ mol-1
18.
Which metal is used in photoengrave plates in printing industry?
Co
Pt
Zn
Mg
19.
Which of the following is not a periodic property?
Atomic radius
Ionization enthalpy
Electron affinity
Oxidation number
20.
Consider the following statements.
(i) d-block elements show variable oxidate states.
(ii) Mostly d-block elements form colourless compounds.
(iii) Mostly d-block elements are diamagnetic due to paired electrons.
Which of the above statement is/are not correct?
(i) only
(ii) only
(i) and (ii)
(ii) and (iii)
21.
Consider the following statements.
(i) Silver, Gold, Mercury and Platinum do not have any effect on water.
(ii) Carbon, Sulphur and Phosphorous do not react with water.
(iii) Beryllium reacts with water less violently.
Which of the following statements is/are not correct?
(i) only
(ii) and (iii)
(iii) only
(ii) only
22.
% efficiency can be calculated using the formula __________
\(\frac { output }{ input } \)
\(\frac { input }{ output } \times 100\)
\(\frac { input }{ output } \)
\(\frac { output }{ input } \times 100\)
23.
Which mixture of gases at room temperature does not obey Dalton's law of partial pressure?
NO2 and O2
SO2 and SO3
CO and CO2
NH3 and HCI
24.
FeSO4 contains _________ molecules of water of hydration.
5
7
10
12
25.
Assertion : Beryllium compounds are covalent in nature
Reason : The size of Be2+ ion is larger in comparison to the radii of the other divalent ions of alkaline earth metals.
Codes:
a) both assertion and reason are true and reason is the correct explanation of assertion
b) both assertion and reason are true but reason is not the correct explanation of assertion
c) assertion is true but reason is false
d) both assertion and reason are false
Both assertion and reason are true and reason is the correct explanation for assertion
Both assertion and reason are true but reason is not the correct explanation for assertion
Assertion is true but reason is false
Both assertion and reason are false.
1.
(a)
CH3CHCl2
2.
(b)
CN & -NO2
3.
(c)
Free radical substitution
4.
(d)
-NO2
5.
(d)
Fe4[Fe(CN)6]3
6.
(c)
7.
(a)
I3-
8.
(b)
C6H5COOH
9.
(d)
both a& b
10.
(a)
CO2
11.
(d)
Both statement I and II are false
12.
(c)
SOCl2
13.
(b)
3
14.
(b)
I > III > II
15.
(c)
sp and sp2
16.
(a)
3 – Methyl –3–hexanone
17.
(a)
-3227 kJ mol-1
18.
(d)
Mg
19.
(d)
Oxidation number
20.
(d)
(ii) and (iii)
21.
(c)
(iii) only
22.
(d)
\(\frac { output }{ input } \times 100\)
23.
(d)
NH3 and HCI
24.
(b)
7
25.
c) assertion is true but reason is false
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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