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Explanation:Rayon is obtained from a NATURAL source wood PULP yet it is man made fibre because it is obtained by chemical reaction of carbon disulphide and NaOH with natural CELLULOSE (wood pulp).That's why it is ALSO known as regenerated fiber.

tion:1 is the ANSWERIT MAY HELP U

1. Y=rayon and Z=silk As rayon it is also KNOW as ARTIFICAL silk... Hope so it is HELPFUL.. Pls follow me.. LIKE.. Mark me as brainliest.. THANKYOU

A                                    BHydrochloric Acid         HClSodium Hydroxide         NaOHSulfuric Acid              H2SO4Nitric Acid                 HNO3Potassium Hydroxide    KOHCarbonic Acid         H2CO3Calcium Hydroxide    CA(OH)2Boric Acid                 H3BO3Magnesium Hydroxide       Mg(OH)2Phosphoric Acid            H3PO4Ammonium Hydroxide      NH4OHAcetic Acid                 HC2H302Aluminum Hydroxide   NH4OHCitric Acid                H3C6H5O7Explanation:PLEASE MARK me as the BRAINLEST

1) (a) A special TYPE of plastic used as fire-proof plastic. Answer : Melamine plastic.(b) A plastic used for making electrical switches and handles of VARIOUS utensils. Answer : Bakelite plastic.(c)A plastic which is used for making floor tiles, kitchenware and FABRICS which resist Answer : Melamine plastic ( ALSO used as making floor tiles ).(d) A plastic which is used for non-stick coating on cook wares Answer : PTFE plastic. (Polytetrafluoroethylene) ________________________________Answer 2) Disposal of plastic is a major problem because it results into land pollution, air pollution by burning and water pollution by disposing in water. This causes an unfriendly BEHAVIOUR with environment. Therefore disposing plastic is a major problem. But, to reduce it we can follow some ways:-Avoid plastic bags. Use cloth bag or any other bag except plastic while going out.Do not use plastic bottles, lunchbox and plastic straws.Avoid plastic packaging over food as it can cause cancer.________________________________Answer 3) As a responsible citizen what measures can I prefer to keep public places clean are:-Avoid plastic materials.Should throw rubbish in dustbins.Don't litter on roads etc.While you are out from your house, try to use public washrooms.Daily cleaning of public streets and roads to ensure that there is no garbage left.Spread awareness between people regarding cleanliness.________________________________Answer 4) a. Paper :- Biodegradable.b. Aluminium :- Non - biodegradable.c. Plastic bags :- Non - biodegradable.d. Cotton clothes :- Biodegradable.

a) INSOLUBLE b) Fractional distillationI don't KNOW the last ONE so i don't want to put U into confusionSorry...

Here is your answer buddyThe fixed number of WATER MOLECULES present in one FORMULA unit of a salt is CALLED water of crystallisation.Thanks...

i) Y- rayon; Z- silkExplanation: rayon is a CELLULOSE fabric and is OFTEN COMPARED to SILK and cotton.

Your answer is....• Temporary hardness of water can be removed by heating the water. As water is heated the calcium and magnesium carbonates are precipitated out of the water and COLLECT as RESIDUE, the water can then be recollected and is free of these minerals.....• Permanent Hardness of Water:When the soluble salts of magnesium and calcium are present in the form of CHLORIDES and sulfides in water, we call it permanent hardness because this hardness cannot be removed by boiling. We can remove this hardness by treating the water with washing SODA....• ADDITION of washing soda can remove both temporary as well as permanent hardness of water...Hope it helps...☺️☺️☺️Please mark me as a brainlist....

tion:1) Basic fertilizers are used to neutralize acid soils and acidic fertilizers are used to neutralize basic soils in agriculture.2)Bee STINGS and ant stings, which are acidic, are commonly neutralized with basic BAKING powder. 3)WASP STING is basic and is USUALLY neutralized with vinegar.

It have some BASIC STEPS PLZ search on Google okk

A new substance is produced in a chemical change by the rearrangement of atoms but PHYSICAL changes mainly include change of state,reversible changes ETC. 2. new SUBSTANCES are produced in chemical changes while substance remains same in physical change in terms of molecular arrangement and hello..

The stationary phase is one of two phases that EXIST in a chromatographic system. The other phase is called the mobile phase. The stationary phase is a solid, a liquid, or a gel that REMAINS static when a GAS or liquid moves over its surface and separates out into its VARIOUS components. WorkplaceTesting explains Stationary PhaseExplanation:here is ur ANSWER

s alloy of IRON and CARBON, so it is FORMING a SOLID - solid homogeneous mixture.✔️✔️✔️

coal is betterExplanation:Wood causes more CLIMATE POLLUTION when it burns.hope it HELPS.

Brass is the mixture comes in homogeneous MIXTURES. please mark it as BRAINLIEST and ALSO CLICK on a SMALL heart and follow me

ed pests and weeds. Major soil EROSION. High soil moisture loss. Timeliness considerations. Highest fuel and Little erosion control. High soil moisture loss. Shredding may be NEEDED for residue flow. Medium fuel and labor requirements.No INCORPORATION. Increased dependence on herbicides. Slow soil WARMING on poorly drained soils.hope it helps u

here is your ANSWER MATE and PLEASE MARK it as BRANLIEST

Polyvinyl CHLORIDE (PVC) What is Polyvinyl Chloride (PVC)? PVC is Polyvinyl Chloride. This is a plastic that has the following chemical formula: CH2=CHCl (see picture on the right). Plastic covers a wide rage of synthetic or semi-synthetic polymerization products (i.e. long-chain carbon-based "ORGANIC" molecules) which name refers to the FACT that in their semi-liquid state they are malleable, or have the PROPERTY of plasticity.

1. POLYVINYL Chloride 2. Bakelite3. Thermosetting Plastic4.a. Paper: Biodegradable b. ALUMINIUM: Non Biodegradable (C) Plastic BEGS: Biodegradabled. Cotton cloths:biodrgable5.Option (d)6.Option (b)7.Option (c)8. Option both (a) and (b)

Process Of Making Fabric From FibreThe fabric is stitched to make clothes. ... There are two main processes of making fabric from FIBRE – weaving and knitting. Weaving: Weaving INVOLVES making fabric by arranging two SETS of YARN. It is DONE using a machine called loom, which can be hand-operated or power- operated.Explanation:pls mark me as brainliest ❣❣

Here is your answer buddypH Scale: The pH scale, (0 - 14), is the full set of pH numbers which indicate the concentration of H+ and OH-ions in water. The DIAGRAM on the left gives some relationships which summarizes much of the PREVIOUS discussion. pH Scale Principle: H+ ION concentration and pH RELATE inversely.Thanks...

is your ANSWER

tion:The MOLECULES of water have more energy than the molecules of ice at the same temperature, this is because as ice is melted to the LIQUID state, ice absorbed energy which is used in breaking the inter particles forces between the ice and HENCE water molecule have more KINETIC energy.please follow me...please mark as BRAINLIST

woolExplanation:

es100melting pointdepletionvolume

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hii dear, hope you are fineExplanation:In chemistry, mass ratio, often CALLED "percent composition by mass," is the proportion of a particular molecule that CONSISTS of each that molecule's CONSTITUENT elements. ... Calculating mass ratios is easy enough if you have access to a periodic table (see Resources) and the MEANS to do basic algebra.please dear , mark as brainliest and follow me too dear.

is chemically extremely UNCREATIVE because it have stable ELECTRONIC configuration and is a noble gas. so it does not REACT with other elements easily

B) PbOExplanation:LEAD ( II ) ION = Pb²+ OXYGEN = O²-thus, it is the PERFECT answer to this qn.

because there have LESS REACTIVITY

Before all the naturally occurring elements were DISCOVERED, the periodic table was USED to predict the chemical and physical PROPERTIES of elements in the gaps on the table. ... The table is useful for modern students and scientists because it helps predict the types of chemical reactions that are LIKELY for an element.... HOPE this helps u ✨✌

The government affects your DAILY lives in the following ways: 1.It protect our boundary and maintains peaceful RELATIONS with other countries. 2.Everyone should get enough to eat and there is no food shortage. 3.Look after the HEALTH of the people. 4.If there is natural DISASTER like Tsunami or an earthquake, it is the government that MAINLY organises aid and assistance for the affected people. 5.If there is a dispute or crime, the courts will provide justice.PLEASE MARK ME AS BRAINLIEST!!!

pls mark me as brainliestExplanation:Souring milk RESULTS in CURDING, a physical reaction. YET,chemically it changes because of increased acidity. The proteins become denatured in the process and acid levels increase CHANGING the chemical composition.

te.... Salicylic aldehyde (2-hydroxybenzaldehyde) is the organic compound with the FORMULA C6H4CHO-2-OH. ALONG with 3-hydroxybenzaldehydeand 4-hydroxybenzaldehyde, it is ONE of the three isomers ofhydroxybenzaldehyde. This colorless OILY liquid has a bitter almond odor at higher concentration.Hope this will help you.... #AD

HEY MATE HERE IS YOUR ANSWER ☺Explanation:THE TYPE OF GAS WHICH IS EMITED WHEN A MATCHSTICK IS LIT DEPENDS ON THE MATERIAL USED IN ITS HEAD . THE USUALLY USED MATCHSTICK HEAD ARE AN ADMIXTURE OF RED SULPHER IN MAJOR PORTION AND RED PHODPHOROUS IN TRACE QUANTITIES . THE GAS THAT IS EMITTED WHEN A MATCHSTICK LIT OR BURNS IS THEREFORE SULPHER DIOXIDE. HOPE THIS ANSWER WILL HELP YOU...SO PLEASE FOLLOW ME AND MARK ME THE BRAINLIEST ....

,hebarium baHop this will HELP you

the CORRECT OPTION is option [a]

[a] [C] [B] [d]EXPLANATION:

The Advantages of ChromatographyPrecise separation, analyses, and purification is possible using chromatography. It requires very low SAMPLE volumes. It works on a widerange of samples INCLUDING DRUGS, food particles, plastics, pesticides, air and water samples, and TISSUE extracts.