11th Standard Syllabus & Materials
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NEW11th Standard
TN 11th Tamil மொழி கலை -செய்யுள் - ஒவ்வொரு புல்லையும் Important Questions And Answers Study Material - QB365 Set A
NEW11th Standard
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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 English Medium Free Online Test Book Back 1 Mark Questions with Answer Key
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.
The gaseous envelope around the earth is known as atmosphere. The region lying between an altitudes of 11 - 50 km is __________.
Troposphere
Mesosphere
Thermosphere
stratosphere
2.
The IUPAC name of
is ____________
2-Bromo pent – 3 – ene
4-Bromo pent – 2 – ene
2-Bromo pent – 4 – ene
4-Bromo pent – 1 – ene
3.
The correct statement regarding the comparison of staggered and eclipsed conformations of ethane is (NEET)______________
the eclipsed conformation of ethane is more stable than staggered conformation even though the eclipsed conformation has torsional strain
the staggered conformation of ethane is more stable than eclipsed conformation, because staggered conformation has no torsional strain
the staggered conformation of ethane is less stable than eclipsed conformation, because staggered conformation has torsional strain
the staggered conformation of ethane is less stable than eclipsed conformation, because staggered conformation has no torsional strain
4.
For the following reactions
(A) CH3CH2CH2Br + KOH → CH3 - CH = CH2 +KBr + H2O
(B) (CH3)3CBr + KOH → (CH3)3 COH + KBr
(C) 
Which of the following statement is correct ?
(A) is elimination, (B) and (C) are substitution
(A) is substitution, (B) and (C) are elimination
(A) and (B) are elimination and (C) is addition reaction
(A) is elimination, B is substitution and (C) is addition reaction
5.
Select the molecule which has only one \(\pi\) bond.
CH3– CH = CH – CH3
CH3– CH = CH – CHO
CH3– CH = CH – COOH
All of these
6.
Which of the following statements is in correct ?
Li+ has minimum degree of hydration among alkali metal cations
The oxidation state of K in KO2 is +1
Sodium is used to make Na / Pb alloy
MgSO4 is readily soluble in water
7.
Water gas is _____.
H2O(g)
CO + H2O
CO + H2
CO + N2
8.
The electronic configuration of the elements A and B are 1s2, 2s 2,2p6,3s2 and 1s2, 2s2,2p5 respectively. The formula of the ionic compound that can be formed between these elements is ___________
AB
AB2
A2B
none of the above
9.
An element X has the following isotopic Composition 200X = 90%, 199X = 8% and 202X = 2%. The Weighted average atomic mass of the element X is closest to _________.
201 u
202 u
199 u
200 u
10.
The energies E1and E2 of two radiations are 25 eV and 50 eV respectively. The relation between their wavelengths ie \(\lambda \)1 and\(\lambda \)2 will be ___________
\(\frac { { \lambda }_{ 1 } }{ { \lambda }_{ 2 } } =1\)
\({ \lambda }_{ 1 }=2{ \lambda }_{ 2 }\)
\({ \lambda }_{ 1 }=\sqrt { 25\times 50{ \lambda }_{ 2 } } \)
\(2{ \lambda }_{ 1 }={ \lambda }_{ 2 }\)
1.
(d)
stratosphere
2.
(b)
4-Bromo pent – 2 – ene
3.
(b)
the staggered conformation of ethane is more stable than eclipsed conformation, because staggered conformation has no torsional strain
4.
(d)
(A) is elimination, B is substitution and (C) is addition reaction
5.
(a)
CH3– CH = CH – CH3
6.
(a)
Li+ has minimum degree of hydration among alkali metal cations
7.
(c)
CO + H2
8.
(b)
AB2
9.
(d)
200 u
10.
(b)
\({ \lambda }_{ 1 }=2{ \lambda }_{ 2 }\)
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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Business Maths and Statistics

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