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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: 13/05/2022
QB365 provides detailed and simple solution for every book back questions in class 8 Maths subject.It will helps to get more idea about question pattern in every book back questions with solution.
latest Book back QuestionsDownload Tamil Nadu 8th Standard Maths 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 Maths Test1.
Draw a histogram for the following data.
| Mid Value (x) | 15 | 25 | 35 | 45 | 55 | 65 | 75 |
| Frequency (f) | 12 | 24 | 30 | 18 | 26 | 10 | 8 |
2.
Form a continuous frequency distribution table and draw histogram from the following data.
| Age (in years) | No. of persons |
| Under 5 | 1 |
| Under 10 | 12 |
| Under 20 | 26 |
| Under 25 | 27 |
| Under 30 | 35 |
| Under 35 | 38 |
| Under 40 | 45 |
| Under 45 | 48 |
| Under 50 | 53 |
3.
Draw a pie chart for the given table.
| Continent | Asia | Africa | North America | South America | Europe | Australia | Antarctica |
| Area | 30 % | 20 % | 16 % | 12 % | 7 % | 6 % | 9 % |
4.
In a study of dental problem, the following data were obtained.
| Ages | 0-10 | 10-20 | 20-30 | 30-40 | 40-50 | 50-60 | 60-70 | 70-80 |
| No. of patients | 5 | 13 | 25 | 14 | 30 | 35 | 43 | 50 |
Represent the above data by a frequency polygon
5.
Write any five points from the given pie chart information regarding pollutants entering in the oceans.
1.
Here given mid value. We convert it into continuous distribution.
| Class interval | Frequency |
| 10-20 | 12 |
| 20-30 | 24 |
| 30-40 | 30 |
| 40-50 | 18 |
| 50-60 | 26 |
| 60 -70 | 10 |
| 70-80 | 8 |
2.
Rearrange the above table into continuous of distribution then the table becomes as follows.
| Age (in years) | No. of persons |
| 0-5 | 1 |
| 5-10 | 12 - 1 = 11 |
| 10- 15 | 19- 12 = 7 |
| 15-20 | 26 -19 = 7 |
| 20-25 | 27 -26 = 1 |
| 25-30 | 35 - 27 = 8 |
| 30-35 | 38 - 35 = 3 |
| 35-40 | 45 - 38 = 7 |
| 40-45 | 48 - 45 = 3 |
| 45-50 | 53 - 48 = 5 |
3.
4.
Find the midpoint of the class intervals and tabulate it.
| Age | Mid point(x) | No of patients |
| 0-10 | 5 | 5 |
| 10-20 | 15 | 13 |
| 20-30 | 25 | 25 |
| 30-40 | 35 | 14 |
| 40-50 | 45 | 30 |
| 50-60 | 55 | 35 |
| 60-70 | 65 | 43 |
| 70-80 | 75 | 50 |
5.
5% of litter and 5% of off shore oil enter in the oceans.
Industrial waste water and Martime transportation enter in the oceans with same amount of 10%
Air pollutants entering in the oceans IS same as the Farm run off is 20%
All the pollutants make the ocean pollute and it is very harmful to the ocean animals.
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
