1. It is strong, elastic and light. It is lustrous and easy to wash. So it becomes very
popular for making clothes.
2. Made from wood pulp and wOYCn sheet with cotton and woven mat with wool.
3. The fabric made from this liber does not crumble casily, it stay tight and easy to
wash so it's useful in making wearable labrics.
4. Useful in making sweaters cheaper than wool.
5. Thin fibers can be made of it and can be woven like any other thread.
Applies learned scientific concepts in daily life.
Answer the following question.
1. SD kg wheat has been brought to your house. What will you do to take care of it?
Explain where and why metallic material (any one) and non-mctallic material (any
990) have been used in your home
Which agriculture tool would you choose to sow seeds in the field?
Pilustrates the process and the phenomenon.
Answer the following questions,
!. Explain the process of harvesting
2. When you add water la sulfur dioxide and put a blue litmus paper in il, why does it
lumn Ted?
3. When we put burning candle near the mouth of test tube consisting of sulfuric acid &
pieces of magnesiumi melal, why does it explode?
4. Why do the colour & solution of copper sulphate change when we take a solution of
copper sulphate in a beaker and put an iron nail in it?
Connects process and event with cause,
Give reasons.
1. Why are infants and children vaccinated?
Answers
Answer:
1. Nylon
2. Rayon
3. Polyester
4. Acrylic
5. Terylene
1. First we will dry it in the Sun light and then store it in metallic bin.
2. We use aluminium foil to pack our food. Graphite is used in making pencil lead for writing.
3. We use seed drill to sow seeds. It give proper space of seeds.
1. Crops are cut and gathered once they mature. This process is called harvesting. The crop is harvested either manually using a sickle or by a machine called a harvester.
2. It turns red litmus blue because it is acidic in nature.
3. When we bring the candle near the mouth of the test tube, this hydrogen gas burns explosively in the presence of air with a pop sound.
4. This is displacement reaction in which more reactive metal replace the less reactive metal. Iron is more reactive than copper. So it make iron sulphate from copper sulphate.
Give reasons.
1. Infants and children vaccinated because antibodies are produce in body to counter the effect of the dead or weakened microbes. These antibodies remain in the body and protect infants and children from the disease-causing microbes in future.
Explanation:
Hope it is helpful !!!!!! :)