100% FREE ACCESS9th 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: 09/12/2020
9th Standard Science Carbon and its Compounds English Medium Free Online Test 1 Mark Questions with Answer Key 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.
The thinnest and strongest allotrope of carbon is ______________.
Graphite
Fullerene
Graphene
Diamond
2.
In a covalent bond formation
transfer of electrons takes place
equal sharing of electrons between two atoms takes place.
electrons are shared by one atom only.
electrons are donated by one atom and shared by both atoms.
3.
Hydrocarbons on burning in the air give CO2 and _____________.
Water and heat
CO and Heat
Water and CO
Water and Sulphur dioxide
4.
Plastic resin codes are shown as three chasing arrows in a ______________ with a number in the middle or letters (an acronym of that plastic type).
Logo
Recycling symbol
Square
Triangle
5.
The lead pencil contains
Graphite
Diamond
Lead
Charcoal
6.
Which of the following plastic items are banned by the Government of Tamil Nadu as of 1st January 2019?
Plastic sheets
Plastic tea cups
Plastic water packets
All the above
7.
Raagav brings his lunch every day to school in a plastic container which has resin code number 5. The container is made of
Polystyrene
PVC
Polypropylene
LDPE
8.
Which of the following does not contain double bond
CO2
C2H4
HCl
O2
9.
Carbon forms large number of organic compounds due to
Allotropy
Isomerism
Tetravalency
Catenation
10.
Number of free electron(s) in each carbon of graphite is
one
Two
Three
Four
1.
(c)
Graphene
2.
(b)
equal sharing of electrons between two atoms takes place.
3.
(a)
Water and heat
4.
(d)
Triangle
5.
(a)
Graphite
6.
(d)
All the above
7.
(c)
Polypropylene
8.
(c)
HCl
9.
(d)
Catenation
10.
(a)
one
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
NEW9th Standard
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
