Question

Problem 2. Smasher Van, bound for Koronadal City, leaves Polomolok every 15 minu while Nustafa Van leaves every 20 minutes.
5. How often do the two vans leave Polomolok at the same time?
a. every 30 minutes c. every 1 hour b. every 40 minutes d. every 2 hours
6. How many times will the Smasher Van leave Polomolok so that the two vans le together?
a. 2 times b. 3 times C. 4 times d. 5 times
7. How many times will the Nustafa Van leave Polomolok so that the two vans together?
a. 2 times b. 3 times C. 4 times d. 5 times​

Answer 1

1. Thermoplastics

• The plastics which get deformed easily on heating and can be bent easily are known as thermoplastics, e.g. polythene and Polyvinyl Chloride (PVC).

Thermoplastics are used for making insulation of electric wires and cables, various types of plastic containers (bottles, jars, etc.), combs, toys, raincoats, packaging materials, etc.

Polythene' (poly + ethene) is a polymer of a compound known as ethene. It is used for making commonly used polythene bags.

2 Thermos

(ii)