Describe the method of preparation of fibre obtained from plant source.

Describe the method of preparation of fibre obtained from plant source.
by

1 Answer

Answer :

The fibre obtained from plant source is Cotton


Fruits (capsules) are 3-5 celled,, which contain numerous seeds. Seeds covered with hair, known as Balls. Balls are collected, dried & taken to ginning press, where in trichomes are separated from seeds. Raw cotton obtain from above is subjected to a process called combing. This separates the long and short fibres .The long fibres are spun and woven as cloth and short fibres are called linters. This is used for manufacturing of absorbent cotton.


Remove impurities (vegetable debris) from raw cotton. To remove wax, fatty material & colouring matter, raw cotton is taken to the machine, cotton opener & followed by treatment with dil. Soda solution or soda ash solution under pressure for about 10-15 hrs. Washed with water & treated with suitable bleaching agent. Again washed, dried & make a flat sheet .Finally packed in paper wrappers & sterilized.  

by

Related questions

Write example of Pharmaceutical aid obtained from:

Description : Write example of Pharmaceutical aid obtained from:

Last Answer : i) Animal source : Bees wax/ Lanolin (hydrous wool fat)/ Honey/ Gelatin ( any one ) ii) Mineral source : Kaolin / Talc/ Bentonite/ Chalk ( any one )

Define Enzymes. Write biological source, chemical constituents and uses of Papaya.

Description : Define Enzymes. Write biological source, chemical constituents and uses of Papaya. 

Last Answer : Enzymes- Enzymes are the protein substances which act as catalysts in various biochemical reactions Papaya: Biological source: It consist of dried latex obtained by giving incision on unripen fruit of Carica ... skins and hides. 6. It is used in cheese manufacturing ,as a substitute of rennin.

Write the biological source, chemical constituents and uses of Garlic

Description : Write the biological source, chemical constituents and uses of Garlic

Last Answer : Biological source: It consist of bulbs of the plant Allium sativum, Family: Liliaceae  Chemical constituents: Garlic bulbs contain 29%carbohydrates, 56%proteins (albumin), fat, mucilage and ... in high blood pressure and atherosclerosis. It is reported to possess cholesterol suppressing properties.

Write method of cultivation and collection of ‘Rauwolfia’.

Description : Write method of cultivation and collection of ‘Rauwolfia’.

Last Answer : Cultivation: Loamy soil with large amount of humus and good drainage are ideal for cultivation of Rauwolfia. The PH of the soil should be acidic and around 4. The temperature range for cultivation ... . Care is taken to keep the root bark intact as the bark has higher alkaloidal content.

Explain chemical method of classification of crude drug with its merit and demerits.

Description : Explain chemical method of classification of crude drug with its merit and demerits. 

Last Answer : Chemical method of classification of crude drug: This type of classification is based on type of chemicals present in the drugs. Class Examples ... two or more active chemical constituents 2. The drugs from various sources are grouped together.

Define “Drug Adulteration”. Describe any four methods of adulteration with suitable examples.

Description : Define “Drug Adulteration”. Describe any four methods of adulteration with suitable examples.

Last Answer : Definition: Adulteration is the debasement of an article. Methods of Adulteration : 1. Replacement by exhausted drugs Ex. a).Exhausted saffron is coloured artificially  b)Exhausted Ginger is mixed with starch ... .  c) White oil in oil of Coconut.  d) Stearin or paraffin in cocoa butter.

Define bark. Describe the methods of collection of bark.

Description :  Define bark. Describe the methods of collection of bark.

Last Answer : Bark: The secondary external tissues lying outside the cambium in stem or root of dicotyledonous plants are known as the bark. Methods of collection: 1.Felling method: The tree is cut at ... develop further yielding aerial parts. These new parts are cut off and bark is collected from shoots.

Draw a well labelled diagram of T. S. of cinnamon bark and describe any four microscopical characters.

Description : Draw a well labelled diagram of T. S. of cinnamon bark and describe any four microscopical characters.

Last Answer : Microscopy: 1. Pericyclic fibre: Small group of about 6 to 15 pericyclic lignified fibres 2. Sclerides: 3 to4 layers of pitted sclerides, thickened lignified walls, isodiametric ... identified after staining with rheuthenium red 7. Oil cells: Big& isolated

Describe the different techniques( any three) for isolation of volatile oils.

Description : Describe the different techniques( any three) for isolation of volatile oils.

Last Answer : Methods of isolation of volatile oil: A) Distillation : Most of the oils are obtained by distillation which are of following 3 types 1.Water distillation -is mostly applicable to such plant ... exhausted petals are replaced by fresh petals and then the oil is collected from the fatty material.

State which part of the plant is used in case of

Description : State which part of the plant is used in case of

Last Answer : i) Belladona – Dried leaves and other aerial parts ii) Rauwolfia - Roots iii) Ipecac -Rhizomes and roots iv) Colchicum- Dried seeds / Corm

Explain the chemical tests of any FOUR crude drugs.

Description : Explain the chemical tests of any FOUR crude drugs.

Last Answer : Silk :   1) Silk is soluble in cuoxam, sulphuric acid (66%) and concentrated hydrochloric acid. 2) Silk does not contain sulphur containing amino acids hence the test with lead acetate & KOH solution ... ash.) 5) With N/50 iodine solution followed by 8% sulphuric acid , it gives yellow colour.

Write any two examples of drug belonging to following family-

Description : Write any two examples of drug belonging to following family-

Last Answer : (i) Rubiaceae – Cinchona,Ipecac (ii) Apocynaceae – Vinca , Rauwolfia (iii) Burseraceae – Guggul , Myrrh (iv) Liliaceae - Aloe , Colchicum , Garlic , Shatavari

Name the adulterants and substitute of - i) Nux- Vomica

Description : Name the adulterants and substitute of - i) Nux- Vomica 

Last Answer : i) Nux- Vomica Adulterants:   1) Strychnos nuxblanda  2) Strychnos potatorum Substituents:( 1 mark) 1) Strychnos wallichiana 2) Strychnos ignatii ii) Digitalis Adulterants:  1) Verbascum ... 1) Digitalis lanata 2) Digitalis lutea or straw foxglove 3) Digitalis thapsi or Spanish foxglove

Differentiate between Organised and unorganised crude drug.

Description : Differentiate between Organised and unorganised crude drug.

Last Answer : Organized crude drug Unorganized crude drug  1. It is obtained from definite anatomic parts of the plants such as flowers, leaves, fruits etc. ... , etc 6. Ex. Aloe , bees wax, tragacanth, asafoetida etc.

Define the following with example.

Description : Define the following with example.

Last Answer : i)Oxytocics: These are the drugs which have stimulant effect on the motility of the uterus.  OR An agent that causes expulsion of the contents of uterus by contracting the uterine muscles. Example- Ergot ... smooth muscles. Example: Black catechu , pale catechu , Amla ,Clove ,Cinnamon ( any 1 )

Explain the general chemical test for the identification of alkaloids

Description : Explain the general chemical test for the identification of alkaloids

Last Answer : Identification tests for alkaloids by precipitation method: 1. Mayer's Reagent (Potassium mercuric iodide)  Cream or pale yellow ppt. 2. Dragendorff's Reagent (Potassium bismuth iodide)  Brown or ... ppt. 4. Hager's Reagent (Saturated solution of picric acid)  Yellow ppt.

Explain with example of the following i) Latex ii) Condensed tannin iii) Characteristics of umbelliferous fruit

Description : Explain with example of the following i) Latex ii) Condensed tannin iii) Characteristics of umbelliferous fruit

Last Answer : i) Latex: The latex is a product contained in special secretory tissues of certain plants. It is usually, a white aqueous suspension, wherein microscopically small particles of oil globules are ...  2. Endosperm 9. All umbelliferous fruits contain Volatile oil. Example-Fennel, Coriander, Ajowan 

Write the chemical constituents and uses of the following drug-

Description : Write the chemical constituents and uses of the following drug-

Last Answer : i) Cinchona: Chemical constituents: Cinchona contains about 25 alkaloids in the range of 5 to 10%.. Out of 25 alkaloids , only four are therapeutically important and are named as quinine, quinidine, ... in B.P., diuretic, anti-inflammatory activity due to presence of oxazolidone.

Define Glycosides. Classify it on the basis of Glycosidic linkage with example.

Description : Define Glycosides. Classify it on the basis of Glycosidic linkage with example.

Last Answer : Glycosides are organic compounds of plant and animal origin which yield on either acidic or enzymatic hydrolysis, one or more sugars and non-sugar residue. Classification on the basis of glycosidic ... ribose or deoxyribose and ultimately give N- glycosides form. e.g. Cinchona

Write official requirements of surgical dressings.

Description : Write official requirements of surgical dressings.

Last Answer : Official requirements of surgical dressings are: ( any 4 requirements) 1. They should be sterile before use. 2. They should be stored in dry well ventilated place at a temperature not ... should not be allowed to freeze. 6. Permitted antiseptic should be used in prescribed concentration only.

Write the name of the drug which has following use:

Description : Write the name of the drug which has following use:

Last Answer : i) Galactogogue - Shatavari ii) Dental analgesic -Clove iii) Diuretics-Gokhru / Punarnava iv) Brain tonic – Shankhpushpi

Name the drug having following microscopical characters

Description : Name the drug having following microscopical characters

Last Answer : i) Lignified trichome: Nux vomica ii) Fibrovascular bundle: Ginger iii) Paracytic stomata: Senna

What is Garbling?

Description : What is Garbling?

Last Answer : Garbling (Dressing): Garbling is the final step in the preparation of a drug which consists of the removal of extraneous matter, such as other parts of the plant, dirt, and added adulterants.

Give the name of the drug which passes the following chemical test.

Description : Give the name of the drug which passes the following chemical test.

Last Answer : i) Vitali morin test - Datura ii) Swelling factor test: Ispagol iii) Modified brontrager’s test: Aloe iv) Fiehe’s test : Honey

Explain Galenical pharmacy. Who discovered it?

Description : Explain Galenical pharmacy. Who discovered it?

Last Answer : Galenical pharmacy: Various methods of preparation containing active constituents of crude drugs, and even at present the branch dealing with the extraction of plant and animal drugs is known as galenical pharmacy. Name of scientist : Galen ( A Greek physician)

Mention synonym of the following crude drug

Description : Mention synonym of the following crude drug

Last Answer : i) Asafoetida :Hing/ gum Asafoetida ( any one ) ii) Liquorice: Mulethi/ Liquorice root / Glycyrrhiza ( any one ) iii) Aconite: Bachnag/Monkshood/ mithazahar/ Mouse bane /Wolf’s bane/ Friar’s cowl/Radix aconite ( any one ) iv) Tulsi : Holy basil/ sacred basil ( any one )

Write the role of ‘Dioscoride’ and ‘Seydler’ in the development of Pharmacognosy.

Description : Write the role of ‘Dioscoride’ and ‘Seydler’ in the development of Pharmacognosy.

Last Answer : Dioscoride: A Greek physician described several plants of medicinal importance along with some mineral and animal products in his famous drug treatise; De Materia Medica . Seydler : Seydler coined the term ... two Greek words viz, Pharmakon - a drug and gignosco - to acquire the knowledge of.

Define the following i) Laxatives ii) Pharmacognosy iii) Balsam

Description : Define the following i) Laxatives ii) Pharmacognosy iii) Balsam

Last Answer : i) Laxatives: Laxatives are the substances that loose stools and increase bowel movements. ii) Pharmacognosy: Pharmacognosy is defined as scientific and systematic study of physical, chemical, ... aromatic resinous substances of plant origin containing balsamic acids (benzoic and cinnamic acid).

Cotton fibre is obtained from which part of the plant?

Description : Cotton fibre is obtained from which part  of the plant?

Last Answer : Fruit

Classify emulsifying agents with one example of each class. Describe dry gum method for preparation of emulsion.

Description : Classify emulsifying agents with one example of each class. Describe dry gum method for preparation of emulsion.

Last Answer : Classification of Emulsifying Agent: Emulsifying Agents can be divides as follows: 1. Natural: a. Vegetable source: eg. Gum acacia, Tragacanth, agar, pectin, starch, iris moss (chondrus) b. Animal ... at this stage is known as primary emulsion. 4. Add more of water to produce required volume.

Describe the method of preparation of BCG vaccine with dose, storage and uses.

Description : Describe the method of preparation of BCG vaccine with dose, storage and uses.

Last Answer : Method of preparation of BCG vaccine: It is freeze- dried preparation containing live culture of the bacillus Calmette and Guerin strain of Mycobacterium tuberculosis.  Preparation: The ... after its preparation. Uses: Immunising agent which provides protection against tuberculosis. 

Name the four fibre crops grown in India. Which one of them is not obtained directly from the crops ? -SST 10th

Description : Name the four fibre crops grown in India. Which one of them is not obtained directly from the crops ? -SST 10th

Last Answer : Four fibre crops are :- (i) Jute (ii) Cotton (iii) Hemp (iv) Natural silk Natural silk fibre is not obtained directly from the crop. It is called sericulture. In this silk is obtained from cocoons of the silkworm fed on green leaves specially mulberry.

How is jute fibre obtained? -SST 10th

Description : How is jute fibre obtained? -SST 10th

Last Answer : Jute fibre is obtained from the inner bark of the jute plant which is soft and strong and can be drawn out in good lengths. A coarse fabric is woven from this fibre.

Paheli wanted to buy a gift made of animal fibre obtained without killing the animal. Which of the following would be the right gift for her to buy? -Science-7

Description : Paheli wanted to buy a gift made of animal fibre obtained without killing the animal. Which of the following would be the right gift for her to buy? -Science-7

Last Answer : Woollen shawl

Jute fibre is obtained from which part of the Jute? (a) Root (b) Stem (c) Leaf (d) Fruit

Description : Jute fibre is obtained from which part of the Jute? (a) Root (b) Stem (c) Leaf (d) Fruit

Last Answer : Ans: (b)

Pick up correct statement from the following: (A) Fibre boards are used for thermal and acoustic control (B) Fibre boards are used for light weight standing members (C) Fibre boards are obtained by impregnating a resin product on fibres (D) All the above

Description : Pick up correct statement from the following: (A) Fibre boards are used for thermal and acoustic control (B) Fibre boards are used for light weight standing members (C) Fibre boards are obtained by impregnating a resin product on fibres (D) All the above

Last Answer : Answer: Option D

16.14 Menotropins is a preparation of: A. FSH + LH obtained from urine of menstruating women B. LH obtained from urine of pregnant women C. FSH + LH obtained from urine of menopausal women D. LH obtained from serum of pregnant mare (p. 219

Description : 16.14 Menotropins is a preparation of: A. FSH + LH obtained from urine of menstruating women B. LH obtained from urine of pregnant women C. FSH + LH obtained from urine of menopausal women D. LH obtained from serum of pregnant mare (p. 219

Last Answer : C. FSH + LH obtained from urine of menopausal women

What is the best source of pure cellulose? (a) Coir (b) Cotton fibre (c) Jute fibre (d) Hemp

Description : What is the best source of pure cellulose? (a) Coir (b) Cotton fibre (c) Jute fibre (d) Hemp

Last Answer : Ans: (b)

Bitter gourd is rich source of? a Iron b Pottasium c Dietary fibre d Iodine

Description : Bitter gourd is rich source of? a Iron b Pottasium c Dietary fibre d Iodine

Last Answer : a Iron

Describe the different modes of fibre optic cable with neat diagram. Compare fibre optic cable with UTP cable.

Description : Describe the different modes of fibre optic cable with neat diagram. Compare fibre optic cable with UTP cable.

Last Answer : STEP-INDEX MULTIMODE FIBER has a large core, up to 100 microns in diameter. As a result, some of the light rays that make up the digital pulse may travel a direct route, whereas others ... optic cables. Fiber is more expensive than copper due to the light emitting equipment and cost.

Cardiac glycosides are obtained from following plant source. (a) Rauwolfia serpentina (b) Strophanthus gratus (c) Ricinus commounts. (d) Atropa belladonna

Description : Cardiac glycosides are obtained from following plant source. (a) Rauwolfia serpentina (b) Strophanthus gratus (c) Ricinus commounts. (d) Atropa belladonna

Last Answer : Ans: B

This natural fiber obtained from the stems of a plant of the nettle family has found popularity in modern fibers with a high wet strength, absorbent but dries quickly, it can be spun or woven, has a high rot and mildew resistance and elasticity 50 percent greater than that of CHEM-92; Multiple Choice: What transuranic element is often used in satellites as a source of heat or power? w) Plutonium-238 x) Strontium-90 y) Cesium-137 z) Uranium-235

Description : This natural fiber obtained from the stems of a plant of the nettle family has found popularity in modern fibers with a high wet strength, absorbent but dries quickly, it can be spun or woven, has a high rot ... a source of heat or power? w) Plutonium-238 x) Strontium-90 y) Cesium-137 z) Uranium-235

Last Answer : ANSWER: W -- PLUTONIUM-238

Write correct sequence of four steps of method for the preparation of temporary mount of a stained leaf peel. -Biology

Description : Write correct sequence of four steps of method for the preparation of temporary mount of a stained leaf peel. -Biology

Last Answer : Take a healthy leaf from the potted plant.Remove a part of the peel from the lower surface of the leaf. You can do this by folding the leaf over and gently pulling the peel apart ... and glycerin with the help of blotting paper. Observe the slide under magnifications of the compound microscope.

Is training solely on the treadmill a bad method in preparation to run a half marathon?

Description : Is training solely on the treadmill a bad method in preparation to run a half marathon?

Last Answer : Yes, it is. Running on a treadmill will certainly help, but treadmills don't have the incline variability of natural terrain, so your body won't be prepared to run the half-marathon. Training on a ... a mini marathon. It would also be a good idea to get some actual track time in if possible.

Which Tax Return Preparation Method Should You Choose?

Description : Which Tax Return Preparation Method Should You Choose?

Last Answer : Tax season is here and everyone is getting ready to begin their tax return preparation. There are many options out there when it comes to preparing to file, but not all options are adequate for everybody. ... what fits you best and you will be able to file successfully and get the most return back.

Write one laboratory method of preparation of hydrogen gas.

Description : Write one laboratory method of preparation of hydrogen gas.

Last Answer : Ans-Generally prepared by the reaction of granulated zinc with dilute hydrochloric acid as under Zn(s)+2HCl ---ZnCl2 +H2 (g)

Explain the laboratory method of preparation of Methane.

Description : Explain the laboratory method of preparation of Methane.

Last Answer : A mixture of sodium acetate and soda lime (NaOH + CaO) is heated in a hard glass test tube and methane gas is evolved. It is collected by the downward displacement of water. CH 3 COONA + NaOH CaO Na 2 CO 3 + CH 4

For preparation of a contour plan for a route survey (A) Method of squares is used (B) Method of trace contour is used (C) Method of cross profile is used (D) Indirect method of contouring is used

Description : For preparation of a contour plan for a route survey  (A) Method of squares is used  (B) Method of trace contour is used  (C) Method of cross profile is used  (D) Indirect method of contouring is used 

Last Answer : (C) Method of cross profile is used 

The hydrometer method of sedimentation analysis differs from the pipette analysis mainly in (A) The principle of test (B) The method of taking observations (C) The method of preparation of soil suspension (D) All of the above

Description : The hydrometer method of sedimentation analysis differs from the pipette analysis mainly in (A) The principle of test (B) The method of taking observations (C) The method of preparation of soil suspension (D) All of the above

Last Answer : (B) The method of taking observations

What is your favorite dish and it’s method of preparation

Description : What is your favorite dish and it’s method of preparation

Last Answer : Describe your favorite dish with ingredients and it’s method of preparation