Question

Assessment
1. Write the correct order of diffusion for water, akohol. petrol and vegetable oil
2. Name the process which occurs when a drop of dettol is added to water,
3. Give reason for the following observations,
(a) Which of the following diffuses faster anong Water vapour, wax and ethyl alco
(b) We can get the smell of perfume sitting several meters away
What happens when an inflated air balloon is pricked with a pin? Name the property
by this observation​

Answer 1

Question

The 5th term of an arithmetic sequence

is 5 and the sum of the first 5 terms is

55. What is its first term

(a) 15 (b