Question

1. (a) What do you understand by the term temperature? (b) Name the device used in laboratory for mea- suring temperature of a body.

2. (a) What do you understand by area? (b) How can you measure area of regular shape by
using graph paper?

3. What are the standard points on a laboratory thermometer? State their value in (a) celsius scale (b) kelvin scale.

4. (a) Into how many degrees is the scale of laboratory thermometer divided on celsius scale? (b) The mercury in the common laboratory thermometer stands at 2/5 of the length between the standard points, as measured from the lower standard point. What is the temperature in degree celsius? [40°C)

5. A celsius thermometer reads 27°C. What is the corresponding temperature on Kelvin scale? [300 K]

6. Kelvin temperature is 373 K. What is the corresponding temperature on celsius scale? [100 °C]

7. (a) What is a clinical thermometer? (b) Why is this thermometer marked between 35°C and 42°C?

8. (a) Draw a neat and labelled diagram of clinical thermometer. (b) What conclusions can be drawn, if the temperature of a patient is (1) 40°C (ID) 35.5°C? (c) Why is a clinical thermometer not sterilised in boiling water?

9. (a) What do you understand by the term estimation? (b) is estimation a reliable way of measurement? Support your answer by two examples. (c) When do we do estimations in general and why, even when tools of measurement are available? Support your answer with examples.

10. State the magnitude of following quantities in si units. (a) Megawatt (b) kilometre (c) metric tonne (d) millisecond

11. The length of a square room is 13 m. What is the floor area of the room? [169 m)

12. The length of a school compound is 450 m and breadth is 145 m. Find the area of compound in (a) m® (b) hectares. [(a) 65250 m, (b) 6.52 hectares]

13. A district has a length of 20 km and breadth of 17 km . Find the area of district in (a)km²(b)hectares.[ (a) 340 km² (b) 34000 hectares ]

14. A triangular cardboard is of base 20 cm and height from its base 15 cm . What is the area of cardboard [ 150 cm]

15. A coun of radius 28 mm . What is the area in (a) mm² (b) cm² [ (a) 2464 mm² (b) 24.64 cm² ]​


You all will get 10 points who will answer the questions. I will send 980 points in extra

Answer 1

Answer:

have you written your entire book here

(dont be offended, just joking lol)