Question

Q. 1. How can you identify a pearl from an ordinary bead?
Q. 2. Write two characteristics of a piece of sponge and a piece of rubber.
Q. 3. Write the names of materials which are used to make the furniture.
Q. 4. Why milk cannot be separated from water?
Q. 5. For which property of oil, we can separate oil from water?
Q. 5. For which property, sponge is used to make pillow or cushion?​

Answer 1

Answer:

1. The Tooth Test: Simply rub the pearl against your tooth, softly. If the pearl is natural or cultured, you will feel the surface as gritty. If the pearl is a faux gem, then the surface will feel smooth. FACT: While observing pearls under a magnifier, specialists can easily tell whether they are a fake or a real gem.

2. (a) In minute pores of sponge air is trapped. When pressed, air is expelled out so it is compressible. It is a solid as it has definite shape and volume. (b) Rubber band changes shape under force and regain shape when force is removed.

3. (a) 1. Wood

Wood materials have been used for the longest time. Whether if it is Teak, Redwood, Mahogany or even Composite Wood, they are one of the most popular kinds of materials used in furniture manufacturing.

(b) 2. Stainless Steel

As the name goes, Stainless Steel does not easily corrode, rust or even stained by water which normal steel does.

(c) 3. Cane

An all natural material, Cane is popular in the outdoor furniture category due to its highly durable material

aspect.

(d) 4. Plastic

One of the popular characteristics of plastic material are that it is lightweight and are able to meet the budget of the low budget consumer.

(e) 5. Fabric

Another popular fabric, fabric furniture is often seen as a luxury and sophisticated material that is used in many upholstered furnitures.