Question

0-6 Do as directed.
(1) Explain - Threshing
(2) which part of the flame does goldsmith use to make jewellery? Why
(3) Why is phosphorus kept in water?​

Answer 1

Answer:

1)THRESHING:- Threshing is the process of loosening the edible part of grain (or other crop) from the husks and straw to which it is attached. It is the step in grain preparation after reaping and before winnowing, which separates the grain from the chaff. Threshing does not remove the bran from the grain.

2)A goldsmith uses the non-luminous zone (outermost zone) of candle flame to melt gold and silver because it is the hottest part of the candle flame and has most temperature.

3)White phosphorus is highly reactive, and spontaneously ignites at about 30°C in moist air. It is usually stored under water, to prevent exposure to the air.

Explanation:

Hope it helps.