pls answer for all these question .
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Answer:
This one is a question paper okk no cheating please okk
Answer:
2.Carding is a mechanical process that disentangles, cleans and intermixes fibres to produce a continuous web or sliver suitable for subsequent processing.[1] This is achieved by passing the fibres between differentially moving surfaces covered with card clothing. It breaks up locks and unorganised clumps of fibre and then aligns the individual fibres to be parallel with each other.
3.Ants when bite injects an acid which causes a burning sensation, calamine solution is basic in nature. It neutralizes the acid and gives relief from pain.
4. According to Arrhenius, the acids are the hydrogen-containing compounds which give H+ ions or protons on dissociation in water and bases are the hydroxide compounds which give OH− ions on dissociation in water.
5.Mineral acids are those derived from one or more inorganic compounds.
Nitric acid (HNO3) and sulphuric acid (H2SO4) are two examples of mineral acids.
6. According to an old Chinese legend, the empress Si-lung Chi noticed that white worms are eating the leaves of mulberry. They were also spinning shiny cocoons around them. A cocoon was dropped into her cup of tea and a tangle of delicate threads separated from the cocoon. In this way, the first silk industry began in China.
7. a)Test with litmus paper: Place a drop of the given substance on a moist litmus paper. If the colour changes to red, it is an acid.
b) Test with metals: Acids react with metals to produce salt and hydrogen gas.
8. hydrochloric acid: Hydrochloric acid is used in the production of batteries, photoflash bulbs and fireworks. It's even used to process sugar and make gelatin. Hydrochloric acid, like last month's chlorine compound, sodium chloride, is another "workhorse" chemical because it is incredibly useful in a wide variety of ways.
sulphuric acid: In various concentrations the acid is used in the manufacture of fertilizers, pigments, dyes, drugs, explosives, detergents, and inorganic salts and acids, as well as in petroleum refining and metallurgical processes.
I'm sorry i couldn't answer the first one.