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A) BROMO ethane
b) PROPENE

Puritydirectlyproportional to BOILING and MELTING POINTS

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It is advisable to cut the electricity supply before PUTTING WATER over a fire caused due to Electricity. This is because water is a conductor of electricity. If the electricity supply is not cut off then water will conduct electricity and will this electricity will reach the man causing SEVERE BURNS to the person trying to put off fire.
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It is CLAUSIUS CLAPEYRON

An anode RAY is a BEAM of positive ions that is CREATED by certain TYPES of gas-discharge tubes.

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An atom is the smallest CONSTITUENT unit of ORDINARY matter that has the PROPERTIES of a chemical element.
A molecule is an electrically NEUTRAL group of two or more atoms held together by chemical bonds. 

No, DEFORESTATION cannot be considered as a reversible CHANGE. This is because once a TREE is CUT, the same tree cannot be grown again

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Cross-BREEDING method iscommonly used for improving cattle BREEDS. ... Cross- breeding the two can produce animals with both the desired QUALITIES. The milk yield and prolongation of lactation period have improved greatly through successful cross-breeding PROGRAMMES.

valence eletrons are the eletrons which stay the outter most shell.An electron in one of the outer SHELLS of an ATOM that can participate in FORMING chemical bonds with other atoms. plssssssssssssssssssssssssssssss GIVE briliant answer

How is the elaborate three-dimensional structure of proteins attained, and how is the three-dimensional structure related to the one-dimensional AMINO acid sequence information? The classic work of Christian Anfinsen in the 1950s on the enzyme ribonuclease revealed the RELATION between the amino acid sequence of a protein and its conformation. Ribonuclease is a single polypeptide chain consisting of 124 amino acid residues cross-linked by four disulfide bonds (Figure 3.51). Anfinsen's plan was to destroy the three-dimensional structure of the enzyme and to then determine what conditions were required to restore the structure.

Amino Acid Sequence of Bovine Ribonuclease. The four disulfide bonds are shown in color. [After C. H. W. HIRS, S. Moore, and W. H. Stein, J. Biol. Chem. 235 (1960):633.]

Agents such as urea or guanidinium chloride effectively disrupt the noncovalent bonds, although the mechanism of action of these agents is not fully understood. The disulfide bonds can be cleaved reversibly by reducing them with a reagent such as β-mercaptoethanol  In the presence of a large excess of β-mercaptoethanol, a protein is produced in which the disulfides (cystines) are fully converted into sulfhydryls (cysteine

Finally, many proteins are cleaved and trimmed after synthesis. For example, digestive enzymes are synthesized as INACTIVE precursors that can be stored safely in the pancreas. After release into the intestine, these precursors become activated by peptide-bond cleavage. In blood clotting, peptide-bond cleavage converts soluble fibrinogen into insoluble fibrin. A number of polypeptide hormones, such as adrenocorticotropic hormone, arise from the splitting of a single large precursor protein. Likewise, many virus proteins are produced by the cleavage of large polyprotein precursors. We shall encounter many more examples of modification and cleavage as essential features of protein formation and FUNCTION. Indeed, these finishing touches account for much of the versatility, precision, and elegance of protein action and regulation.

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i have done with very hard work

Lime water is the common name for Ca(OH) 2. It is usually used for testing of carbon dioxide and sulphur dioxide as both the gases TURNS lime water milky .  

Carbon dioxide passed into limewater gives a milky solution. This is due to the insolublesuspension ofcalcium carbonateformed:

Ca(OH)2(aq)+ CO2(g)→ CaCO3(s)+ H2O(l)

If excess CO2is added, the following reaction takes place:

CaCO3(s)+ H2O(l)+ CO2(g)→Ca(HCO3)2(aq)

The milkiness disappears SINCE calcium BICARBONATE is water-soluble.

But the milkiness doesn't disappear instantly in case of sulphur dioxide rather it disappear on prolong passing of gas due to formation of calcium hydrogen sulphite.

Hence lime water is not considered effective in diffrentiating two gases.

Now in Order to effectively differentiate b/w two gases we should prefer following tests:

1) ODOUR TEST : CO2 is odourless gas where as SO2 is PUNGENT smelling.

2) DICHROMATE PAPER TEST : SO2 turns potassium dichromate paper green where as CO2 does not undergo such change.  

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This is the ANSWER for your QUESTION

Chromium is the 21st most abundant element in the Earth's crust with a mean concentration in United States soils of about 40 mg/kg. Although it exists in SEVERAL oxidation states, the zero, trivalent, and hexavalent states are the most IMPORTANT in commercial products and the environment. Nearly all naturally occurring chromium is in the trivalent state, usually in COMBINATION with iron or other metal oxides. Although only about 15% of the chromium mined is used in the manufacture of chemicals, most applications of chromium utilize the chemistry of chromium. For instance, the “stainless” nature of stainless steel is due to the chemical properties of the chromium oxides which form on the surface of the alloy. Similarly, the protective properties of chrome plating of metals, chromated copper arsenate (CCA) treatment of wood, and chrome tanning of leather are all dependent on chromium chemistry. The key to these uses is that under typical environmental and biological conditions of PH and oxidation–reduction potential, the most stable form of chromium is the trivalent oxide. This form has very low solubility and low reactivity resulting in low mobility in the environment and low toxicity in living organisms. In this paper the chemical properties of chromium are discussed for the major commercial products in the CONTEXT of the Eh–pH diagram for chromium.

Succinic acid has been the object of intense study over the past decade as a possible fermentation derived platform molecule.  The conversion of succinic acid to maleic acid and fumaric acid open up a larger range of chemical derivatives beyond those of succinic acid alone.  To assess the technical feasibility of the conversion, oxydehydrogenation of succinic acid to maleic acid with an iron-phosphate catalyst was studied in the temperature range between 300 and 475C at atmospheric pressure.  The succinic acid was fed as an aqueous solution in ranging in concentration from 40 to 60 grams of succinic acid per liter of distilled water.  The catalysts were calcined prior to use at temperatures from 450 to 720C from 6.5 to 8 hours.  This oxydehydrogenation step was combined with a subsequent ISOMERIZATION step of maleic acid to fumaric acid. The isomerization was performed in dimethyl succinate or diethyl succinate at temperatures ranging from 135C up to 190C.  The conversion of succinic acid to maleic acid was TYPICALLY in excess of 90% while the selectivity was NEARLY stoichiometric in a single pass of the reactor.  The isomerization reaction reached conversion of over 90% in the 150-160°C temperature range.  The relative ease of the oxydehydrogenation and isomerization reactions indicate that commercial feasibility primarily resides in the cost of the feedstock, succinic acid

Which is NEUTRAL nor too BASIC nor to ACIDIC
EXAMPLE is WATER

Titration USING eriochrome black  as INDICATOR DETERMINES the total  due to CA2+ and Mg2+ ions

The ANSWER is 7 gram
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Herri..... TYPE this in GOOGLE........y will GET an CLEAR INFORMATION than me....!!

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Nucleophilic acyl SUBSTITUTION describe ACLASS of substitution reactions involvingnucleophiles and acyl compounds. In this TYPE of reaction, a nucleophile – such as analcohol, AMINE, or enolate – displaces theleaving GROUP of an acyl derivative – such asan acid halide, anhydride, or ester.

NaH2PO4 -> NaPO3 + H2O

H2CO3 -> H2O + CO2

BaSO4 + H2SO4 -> Ba(HSO4)2

CaCO3 -> CaO + CO2

CaO + H2O -> Ca(OH)2

H2SO3 -> H2O + SO2

H3PO4 + Ca(OH)2 -> CaHPO4.2H2O

NaPO3 + CuO -> NaCuPO4

SO3 + H2O -> H2SO4

Be(OH)2 -> BEO + H2O

BaO + H2O -> Ba(OH)2

Na2SO3 + S -> Na2S2O3

SO2 + H2O -> H2SO3

Li2O + H2O -> LiOH

Na2HPO4 -> Na4P2O7 + H2O

H4As2O7 -> As2O5 + H2O

CaC2 + N2 -> CaCN2 + C

Mg(OH)2 -> (MGOH)2O + H2O

HAsO3 -> As2O5 + H2O

KHSO4 -> K2S2O7 + H2O

H3PO4 -> H4P2O7 + H2O

NaCl + NH4HCO3 -> NaHCO3 + NH4Cl

HAsO2 -> As2O3 + H2O

UO3 + H2 -> UO2 + H2O

CdSO4 + H2S -> CdS + H2SO4

HIO3 -> I2O5 + H2O

Ca(HCO3)2 -> CaCO3 + CO2 + H2O

FeS + H2SO4 -> H2S + FeSO4

(NH4)2SO4 + CaCO3 -> (NH4)2CO3 + CaSO4

Hg2CO3 -> Hg + HgO + CO2

An object that absorbs all radiation FALLING on it, at all wavelengths, is called a black body. When a black body is at a UNIFORM temperature, its emission has a characteristic frequency DISTRIBUTION that DEPENDS on the temperature. Its emission is called black-body radiation.

By CHROMATOGRAPHIC TECHNIQUE

HOLA MATE HERE IS UR ANSWER ♥♥♥♥

Electron shielding prevents these outer ELECTRONS from being attracted to the nucleus; thus, they are LOOSELY held, and the RESULTING atomic radius is large. Atomic radius decreases from left to right within a period. This is caused by the increase in the number of protons and electrons across aperiod.

This results in a DECREASE in atomic radii across the Period, due to the INCREASED nuclear charge which draws in the valence electrons. On the other hand, going down a Group, we GO to another so-called shell of electrons, that build on the preceding shell. Atomic radii thus INCREASE down the Group.

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When WOOD is burn it's all volatile COMPOUND burn with FLAME.but when volatile compound get evaporatorated then only burn without flame

Neopentane, ALSO called 2,2-dimethylpropane, is a double-branched-chain alkane with five carbon atoms. Neopentane is a flammablegas at room temperature and pressure which can condense into a highly volatile liquid on a COLD DAY, in an ICE bath, or when compressed to a higher pressure.

Yes, the MOLECULES of WATER, ice and STEAM are the same but their PHYSICAL states are DIFFERENT.

Murcary.............

1.When temperature and wind speed are constant, but humidity increases, the rate of evaporation will decrease. When wind speed and humidity stay constant, and temperature increases, then the rate of evaporation WILLINCREASE because warmer air can hold more WATER vapor than COLDER air.


sorry,can't find the second answer
hope the first answer will help you

Dichlorodiphenyltrichloroethane, commonly known as DDT, is a colorless, tasteless, and ALMOST ODORLESS crystalline chemicalcompound, an organochlorine, originally DEVELOPED as an insecticide, and ultimately becoming infamous for its ENVIRONMENTAL impacts. It was first SYNTHESIZED in 1874.

58500 RS take 25 percent of 1500 and then 40 percent and GET the seats they acquire total them and minus it with 1500 and you will get the remaining seats multiply TH seats with their COST and add it

DDT means Dichloro diphenyl TRICHLORO ethene. it is formed by the reaction of CHLORAL with chlorobenzene in the presence of sulfuric ACID

Mercury or COPPER both at META L and mercurcury cannot stick with GLASS 'as it is LIQUID in nature

ANSWER:-
Applications of Electrolysis

Electrolysis has wide applications in industries. Some of the important applications are, as follows, 
(i) Production of hydrogen by electrolysis of water.
(II) Manufacture of heavy water 
(iii) The metals like K, Mg, Al, etc., are obtained by electrolysis of fused electrolytes.
(iv) Non-metals like hydrogen, fluorine, chlorine are obtained by electrolysis.
(v) In this method pure metal is deposited at cathode from a solution CONTAINING the metal ionsetc.
(vi) Compounds like NaOH, KOH, WHITE lead, etc. are synthesised by electrosynthesis method.

(vii) Electroplating: The process of coating an inferior metal with a superior metal by electrolysis is known as electroplating.

The AIM of electroplating is, to prevent the inferior metal from corrosion and to make it more attractive in appearance. The object to be plated is made the cathode of an electrolytic cell that contains a solution of ions of the metal to be deposited.

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This CONVERSION can be FACILITATED by GRIGNARD's reagent.

CH3-CHO+CH3MgBr→(CH3)2-CH(OH)

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Free RADIC Biol MED. ... Nitroxyl anion (NO-), the one-electron REDUCTION product of nitric oxide (NO*), has ... the REACTIONS were also inhibited by the presence of hydroxyl radical ...

Here is how you crack it up;

WRITE a balanced CHEMICAL equation for the reaction

N + H ⇄ NH3

since these elements exist as diatomic gases,

∴N2 + H2 ⇄ NH3

now to balance it, make sure the number of atoms on both SIDES of the equation are equal, thus;

N2 + 3H2 ⇄ 2NH3. Now to compare the MOLE ratios

there is 1mol of N2 which reacted with 3mol of H2 to produce 2mol of NH3

we say, 1mol(N2) : 2mol(NH3)

              Xmol     :  8.2mol ,                  and to do the calculation,

2X = 8.2,

     = 4.1mol of N2

Hence, 4.1mol of N2 were needed to produce 8.2moles of NH3