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: 08/12/2020
9th Standard Science Heat 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.
In which of the following, chemical energy is converted into heat energy?
Heater
Refrigerators
Candle
Motor
2.
When we heat one end of an iron rod, its other end also get heated. Can you say, Which one of the following is behind this?
Convection of heat
Radiation of heat
Insulation of heat
Conduction of heat
3.
Which one of the following scales has lower fixed point at 0°C?
Kelvin scale
Fahrenheit scale
Celsius scale
All of these
4.
Which of the following is true?
1 J = 0.24 calorie
1 J = 0.24 calorie
1 calorie = 4.2 J
Both b and c
5.
The temperature at which a liquid gets converted into its vapour state is called its________
melting point
boiling point
dew point
freezing point
6.
Water is used as a coolant because it________
is inexpensive
is easily available
is a good conductor of heat
has a high specific heat capacity
7.
A device in which the loss of heat due to conduction, convection and radiation is minimized in
Solar cell
Solar cooker
Thermometer
Thermos flask
8.
Two cylinders of equal height and radius are made of copper and aluminium. Which of them conducts heat faster?
Copper rod
Aluminium rod
Both of them
None of them
9.
The specific heat capacity of water is
4200 Jkg-1K-1
420 Jg-1K-1
0.42 Jg-1K-1
4.2 Jkg-1K-1
10.
Calorie is the unit of
heat
work
temperature
food
1.
(c)
Candle
2.
(d)
Conduction of heat
3.
(c)
Celsius scale
4.
(c)
1 calorie = 4.2 J
5.
(b)
boiling point
6.
(d)
has a high specific heat capacity
7.
(d)
Thermos flask
8.
(a)
Copper rod
9.
(a)
4200 Jkg-1K-1
10.
(a)
heat
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
