8th Standard Syllabus & Materials
8th Standard
TN 8th Tamil இயல் 3 - கல்வி கரையில - வினைமுற்று Important Questions And Answers Study Material - QB365 Set A
NEW8th Standard
TN 8th Tamil இயல் 2 - ஈடில்லா இயற்கை - மயங்கொலிகள் Important Questions And Answers Study Material - QB365 Set A
NEW8th Standard
TN 8th Tamil இயல் 2 - ஈடில்லா இயற்கை -பட்டமரம் Important Questions And Answers Study Material - QB365 Set A
NEW8th Standard
TN 8th Tamil இயல் 2 - ஈடில்லா இயற்கை - இயற்கையை போற்றுவோம் Important Questions And Answers Study Material - QB365 Set A
NEW8th Standard
TN 8th Tamil இயல் 1 - தமிழ் இன்பம் - ஆழிக்கு இணை Important Questions And Answers Study Material - QB365 Set A
NEW8th Standard
TN 8th Tamil இயல் 2-ஈடில்லா இயற்கை - திருக்குறள் Important Questions And Answers Study Material - QB365 Set A
Published on: 19/07/2019
Download Tamil Nadu 8th 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 unit of charge is ______
Coulomb
Ampere
Radian
Steradian
2.
__________ is the measure of the perceived power of light.
Luminous flux
Luminous power
Luminous Intensity
Both a and b
3.
_______ can be used as memory or storage element in the computers.
Condutors
Insulators
Supercondutors
Semiconductors
4.
SI unit of temperature is __________
celsius
fahrenheit
kelvin
ampere
5.
Electric current is a ______quantity
base
supplementary
derived
professional
6.
The melting point of pure ice is ______
7.
___________ is used to measure each base quantities
8.
The intersection of two straight lines gives us_______.
9.
The closeness of the measured value to the original value is _______
10.
The uncertainty in measurement is called as _______.
11.
plane angle
12.
Solid angle
13.
Luminous intensity
14.
Precision
15.
Accuracy
16.
Which thermometer measures the temperature of an object without any physical contact?
17.
What is the upper fixed point of the kelvin scale?
18.
Name the metric systems of units.
19.
How many times will the ‘minute hand’ rotate in one hour?
20.
Mention the types of clocks based on their display.
21.
Define the magnitude of an electric current.
22.
Name the three things needed for a perfect measurement?
23.
Define- Temperature.
24.
Name some common systems of measurement.
25.
What is measurement?
26.
Write a note on Greenwich Mean time (GMT) and Indian Standard Time (IST)
27.
List out the base quantities with their units.
1.
(a)
Coulomb
2.
(d)
Both a and b
3.
(c)
Supercondutors
4.
(c)
kelvin
5.
(a)
base
6.
( )
0oC
7.
( )
Standard unit
8.
( )
Plane angle
9.
( )
Accuracy
10.
( )
Errors
11.
radian
12.
Steradian
13.
candela
14.
Closeness to two or more measurements
15.
Closeness to the Actual Value
16.
Infrared thermometer.
17.
373 K
18.
CGS, MKS, and SI units.
19.
The 'minute hand' rotates once in One hour.
20.
1. Analog clocks
2. Digital clocks.
21.
The amount of electric charges flowing through a conductor in one second.
Electric current = \(\frac { Amount\ of\ electric\ charges }{ time } \)
22.
i) an instrument
ii) a standard quantity
iii) an acceptable unit.
23.
Measure of the average kinetic energy of the particles in a system.
24.
1. FPS - system (Foot -length, Pound - mass and Second - Time).
2. CGS - system (Centimetre -length, Gram - mass and Second - Time).
3. MKS - system (Metre - length, Kilogram - mass and Second - Time)·
25.
Measurement is the process of finding an unknown physical quantity by using a standard quantity
26.
Greenwich Mean Time (GMT) :
i. The mean solar time at the Royal Observatory, located at Greenwich in London.
ii. Measured at the longitude of zero degrees.
iii. Earth is divided into 24 zones, with a width of 15 degrees longitude called Time zones.
iv. Time difference between two adjacent, time zones is 1 hour.
Indian Standard Time (1ST) :
i. The location of Mirzapur in Uttar Pradesh is taken as the reference longitude of the Indian standard time.
ii. It is located at 82.5-degree longitude.
iii. IST= GMT + 5.30 hours.
27.
| Quanitity | Unit | Symbol |
| Length | Metre | m |
| Mass | Kilogram | kg |
| Time | Second | s |
| Temperature | Kelvin | K |
| Electric current | Ampere | A |
| Amount of substance | Mole | mol |
| Luminous intensity | Candela | cd |
8th Standard Syllabus & Materials
8th Standard
TN 8th Tamil இயல் 3 - கல்வி கரையில - பாடறிந்து ஒழுகுதல் Important Questions And Answers Study Material - QB365 Set A
NEW8th Standard
TN 8th Tamil இயல் 3-கல்வி கரையில - பல்துறைக் கல்வி Important Questions And Answers Study Material - QB365 Set A
NEW8th Standard
TN 8th Tamil இயல் 3-கல்வி கரையில - புத்தியைத் தீட்டு Important Questions And Answers Study Material - QB365 Set A
NEW8th Standard
TN 8th Tamil இயல் 2 - ஈடில்லா இயற்கை - தமிழர் மருத்துவம் ( நேர்காணல்) Important Questions And Answers Study Material - QB365 Set A
Tamilnadu Stateboard 8th Standard Subjects
Tamilnadu Stateboard Standards
