9th Standard Syllabus & Materials
9th Standard
TN 9th Tamil உள்ளத்தின் சீர் -கற்கண்டு (இலக்கணம்) - தொடர் இலக்கணம், ஆகுபெயர் Important Questions And Answers Study Material - QB365 Set A
NEW9th Standard
TN 9th Tamil உள்ளத்தின் சீர் -விரிவானம் (துணைப்பாடம்) - தாய்மைக்கு வறட்சி இல்லை! Important Questions And Answers Study Material - QB365 Set A
NEW9th Standard
TN 9th Tamil உள்ளத்தின் சீர் -கவிதை பேழை (செய்யுள்) - மார்கழி பெருவிழா Important Questions And Answers Study Material - QB365 Set A
NEW9th Standard
TN 9th Tamil உயிருக்கு வேர்-இலக்கணம் - பகுபத உறுப்பிலக்கணம் Important Questions And Answers Study Material - QB365 Set A
NEW9th Standard
TN 9th Tamil அமுதென்று பேர் - இலக்கணம்-எழுத்து -அளபெடை Important Questions And Answers Study Material - QB365 Set A
NEW9th Standard
TN 9th Tamil அமுதென்று பேர்-துணைப்பாடம் - ஆறாம்திணை Important Questions And Answers Study Material - QB365 Set A
Published on: 08/12/2020
9th Standard Science Periodic Classification of Elements English Medium Free Online Test 1 Mark Questions 2020-2021
Download Tamil Nadu 9th Standard Science 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 Science Test1.
Assertion (A): Non-metals are electronegative.
Reason (R) : Non-metal lose electrons to form cation
Both A & R are right
Both A & R are wrong
A is right R is wrong
A is wrong R is right
2.
Assertion (A): Noble gases are chemically inert in nature.
Reason (R) : Noble gases have stable electronic structures
Both A & R are right
Both A & R are wrong
A is right R is wrong
A is wrong R is right
3.
Assertion (A): Group 2 elements in the modern periodic table are called alkaline earth metals.
Reason (R): The oxides of group 2 elements produce alkaline solutions when they are dissolved in water
A is right R is wrong
R explains A
R does not explain A
R is right A is wrong
4.
Which block of the periodic table contains metals, non-metals and metalloids?
s
p
d
f
5.
d-block elements are otherwise known as_______
transition elements
inner transition elements
halogens
alkali metals
6.
The maximum number of electrons that can be accommodated in s, p ,d, and f subshells are__________
14, 10, 6, 2
6, 10, 2, 14
2, 6, 10, 14
6, 2, 14, 10
7.
Noble gases are placed in_____________ group in the modern periodic table.
13th
18th
17th
2nd
8.
If the electronic configuration of an element is 1s2 2s2 2p6 3s2 3p1, then it will occupy___________ block of the periodic table.
s
p
d
f
9.
Elements in the modern periodic table are arranged in__________ groups and __________ periods.
7,18
18,7
17,8
8, 17
10.
If Dobereiner is related with 'law of triads', then Newlands is related with __________.
Modern periodic law
Hund's rule
Law of octaves
Pauli's Exclusion principle
1.
(c)
A is right R is wrong
2.
(a)
Both A & R are right
3.
(b)
R explains A
4.
(b)
p
5.
(a)
transition elements
6.
(c)
2, 6, 10, 14
7.
(b)
18th
8.
(b)
p
9.
(b)
18,7
10.
(c)
Law of octaves
9th Standard Syllabus & Materials
9th Standard
TN 9th Tamil உள்ளத்தின் சீர் - திருக்குறள் Important Questions And Answers Study Material - QB365 Set A
NEW9th Standard
TN 9th Tamil உள்ளத்தின் சீர் - மணிமேகலை Important Questions And Answers Study Material - QB365 Set A
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TN 9th Tamil உள்ளத்தின் சீர் - ஏறு தழுவுதல் Important Questions And Answers Study Material - QB365 Set A
NEW9th Standard
TN 9th Tamil உயிருக்கு வேர் - தண்ணீர் Important Questions And Answers Study Material - QB365 Set A
Tamilnadu Stateboard 9th Standard Subjects
Tamilnadu Stateboard Standards
