11th Standard Syllabus & Materials
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TN 11th Tamil பீடு பெற நில் - இலக்கணம் - பகுபத உறுப்புகள் 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 English Medium Free Online Test Creative One Mark Questions with Answer Key - Part Four
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.
Assertion (A): Among halogens fluorine is the best oxidant.
Reason (R): Fluorine is the most electronegative atom.
Codes:
(a) both assertion and reason are true and the 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 A and R are true and R explains A
Both A and R are true but R does not explain A
A is true but R is false
Both A and R are false
2.
Which of the following is the lewis structure of water?
\(H-\overset { .. }{ \underset { .. }{ O } } -H\)
3.
Consider the following statements.
(i) The valency of the elements increases from left to right in a period.
(ii) Valency decreases from 7 to 1 with respect to oxygen.
(iii) The metallic character of the elements decreases across a period.
Which of the above statement is/are not correct?
(i) only
(ii) only
(i) and (iii)
(i) (ii) and (iii)
4.
Consider the following statements.
(i) Position of hydrogen could not be made clear.
(ii) Isotopes find correct place in Mendeleev's periodic table.
(iii) Mendeleev's periodic table could not explain the variable valencies of elements.
Which of the above statement is/are not correct?
(i) only
(i) and (iii)
(ii) only
(i), (ii), (iii)
5.
Considering Bohr's model which of the following statements is correct?
The energies of electrons are continuously reduced in the form of radiation.
The electron is revolving around the nucleus in a dynamic orbital.
Electrons can revolve only in those orbits in which the angular momentum (mvr) of the electron must be equal to an integral multiple of h/2\(\pi\) .
In an atom, electrons are embedded like seeds in watermelon.
6.
In redox reaction which of the following Is true?
Number of electrons lost is more than number of electrons gained
Number of electrons lost is less than number of electrons gained
Number of electrons lost is equal number of electrons gained
No transfer and gain of electrons during the reaction.
7.
In an exothermic reaction, heat is evolved and system loses heat to the surroundings. For such system
(i) qp will be negative
(ii) ΔrH will be positive
(iii) qp will be positive
(iv) ΔrH will be negative
(i), (ii)
(iii), (iv)
(i) & (iv)
(ii) & (iii)
8.
Statement I: Greater is the critical temperature, more difficult is to liquefy the gas.
Statement II: Stronger the intermolecular forces, lower would be the critical temperature of that gas.
Both statement I and statement II are true and statement II explains statement I.
Both statement I and statement II are true but statement II does not explain statement I.
Statement I is true but statement II is false.
Both the statements are false
9.
The general electronic configuration of p-block element is _____
ns1-2
np1-6
np6
ns2 np6
10.
Which of the following conclusions could not be derived from Rutherford's \(\alpha\)-particle scattering experiment?
Most of the space in the atom is empty.
The radius of the atom is about 10-10 m while that of the nucleus is 10-15 m
Electrons move in a circular path of fixed energy called orbits.
Nucleus and the electrons are held together by electrostatic force of attraction
1.
(a) both assertion and reason are true and the reason is the correct explanation of assertion
2.
(b)
3.
(b)
(ii) only
4.
(c)
(ii) only
5.
(c)
Electrons can revolve only in those orbits in which the angular momentum (mvr) of the electron must be equal to an integral multiple of h/2\(\pi\) .
6.
(c)
Number of electrons lost is equal number of electrons gained
7.
(c)
(i) & (iv)
8.
(d)
Both the statements are false
9.
(d)
ns2 np6
10.
(c)
Electrons move in a circular path of fixed energy called orbits.
11th Standard Syllabus & Materials
11th Standard
TN 11th Tamil பீடு பெற நில் - செய்யுள் - காவடிச்சிந்து Important Questions And Answers Study Material - QB365 Set A
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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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