Science, asked by vidwat, 7 months ago

Fill in the blanks.
(i)Meat and fish are preserved using.....
(ii)Cholera is caused by............
(iii)An example of weedicide is...........
(iv)An example of kharif crop is..........
(v)Coal contains mainly........
(vi)Copper is ...............reactive than zinc. .
(vii)The full form of P.C.R.A is..........
(viii)Cells make up the ............
(ix)The larva of a frog is called..........


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Answers

Answered by sssishanraj
2
1 salt
2 virus
3 2-4d
4 paddy
5 carbon
6 more
7 Petroleum Conservation Research
Association
8 tissues
9 tadpole
Answered by s15017
1

Answer:

(i) The four most popular methods of fish preservation are freezing, canning, smoking and pickling. Top quality fresh fish are essential for fish preservation. Of all flesh foods, fish is the most susceptible to tissue decomposition, development of rancidity and microbial spoilage.

(ii)Cholera is an acute, diarrhea illness caused by infection of the intestine with the bacterium Vibrato cholera and is spread by ingestion of contaminated food or water. The infection is often mild or without symptoms, but sometimes it can be severe and life threatening.

(iii)Weedicides are the chemicals which are sprayed over field to get rid of weeds. They will not show any effect on crop plants. Two popularly used weedicides are 2,4-D Ethyl ester, Neem extract, Glyphosate etc.

(iv)The Kharif crops include rice, maize, sorghum, pearl millet/bajra, finger millet/ragi (cereals), arhar (pulses), soyabean, groundnut (oilseeds), cotton, etc. The rabi crops include wheat, barley, oats (cereals), chickpea/gram (pulses), linseed, mustard (oilseeds), etc.

(v) Coal is mostly carbon with variable amounts of other elements; chiefly hydrogen, sulfur, oxygen, and nitrogen. Coal is formed when dead plant matter decays into peat and is converted into coal by the heat and pressure of deep burial over millions of years

(vi)Elements differ in relative reactivity, it is something often taught in schools as "the reactivity series". In this case, zinc is more reactive than hydrogen, but copper is less reactive than hydrogen. ... So that makes zinc generally more reactive than copper, and in relation to hydrogen.

(vii)Petroleum Conservation Research Association (PCRA) is a registered society set up under the aegis of Ministry of Petroleum & Natural Gas, Government of India. As a non-profit organization, PCRA is a national government agency engaged in promoting energy efficiency in various sectors of economy.

(viii) Cells make up tissues, tissues make up organs, and organs make up organ systems. The function of an organ system depends on the integrated activity of its organs.

(ix)Tadpole, also called polliwog, aquatic larval stage of frogs and toads.

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