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Dueto the evolution of nascent oxygen, it acts as an oxidising and ableachingagent.

bleaching action of bleaching powder is due to cl2

It is due to evolution of nacent Oxygen. Which acts as a oxidising and bleaching agent.

:(b)

d is the right answer

Ahalonium ionin organic chemistry is any onium compound (ion) containing a halogen atom carrying a positive charge. This cation has the general structure R––R where X is any halogen and R any organic residue and this structure can becyclicor an open chain molecular structure

1)Metals have one to three electrons in their outer shell, whereas non-metals have four to eight electrons.

2). Metals are malleable, which means they can be beaten to thin sheets. On the other hand, non-metals are very brittle

3)Metals have a high to moderate density, whereas non-metals have low to moderate density.

4)Metals are opaque and non-metals are transparent.

5. Metals are present in solid form at room temperature, and non-metals are present in solid and liquid forms at room temperature.

6. Unlike non-metals, metals are ductile, which means they can be stretched into wires.

7. Metals have a metallic luster, while non-metals do not.

8. Metals tend to lose their valence electrons, but non-metals share or gain valence electrons.

9. Metals are good conductors of electricity and heat, but non-metals are poor conductors.

Sorry for the wrong pictures. Here comes the right one.

scandium3+ ion is the right answer.

scandium have configuration of (Argon)3d1,4S2 therefore removing 3 outer electron will result in the given configuration Scandium 3+ is the right answer

Water is capable of dissolving a variety of different substances, which is why it issucha good solvent. And, water is called the "universal solvent" because it dissolves more substances than any other liquid. This is important to every living thing on earth.

no

Fora stationary wave, thephase difference betweenitstwo particlesor nodes on theconsecutiveloops stays zero andforthe antinodes, itisequivalent to 180

Ionic compound ...........

1. Ionic Compounds have high boiling and melting points as they’re very strong and require a lot of energy to break.

2. Theelectrostaticforces of attraction between oppositely charged ions lead to the formation of ions.

3. Ionic compounds form crystals.

4. These compounds are brittle and break into small pieces easily.

5. Electrovalent compounds usually dissolve in water and are insoluble in solvents like oil, petrol, kerosene, etc.

6. Ionic compounds do not conduct electricity in a solid state but they do conduct electricity in the molten state.

7. In comparison to molecular compounds, ionic compounds have higher enthalpies of fusion and vaporization.

1. Covalent compounds usually have low melting points. An exception to this include molecules of silica and diamonds that have a high melting point.

2. These compounds have low boiling points. This can be attributed to their weak force of attraction between the various bonded atoms. Van Der Waals forces bind these atoms.

3. These compounds are usually gases and liquids with low boiling and melting points.

4. The solid covalent compounds have soft structures like graphite. This is because of the presence of a cloud of electrons in between each layer of carbons atoms.

5. These compounds are non-conductors of electrical charge. The absence of charged ions is the main reason behind this. An exception to this is graphite, where we see a cloud of electrons. These make graphite a good conductor.

6. They are bad conductors of heat also. Their molecules lack free electrons and that obstructs the flow of heat energy.

An atom or an ion or a molecule that has free valence electron that is unpaired is termed as a 'Radical'. These unpaired electron has tendency to readily pair with other free electrons. So, radicals are highly reactive in nature.

Few names of composite radicals are listed below:-Acetylamino-Acetylimino-Acetylhydrazino-Methaneazoxy-Methaneazo-Methylazo-Methylamino-Methylbenzyl

H2 Is a first known element , to be stable it is always shares it electron with other Hydrogen this is known as covalent bond between Hydrogen element

H - H ==> H2 since each hydrogen have 1 electron in its outermost shell to complete its deplete these hydrogen will share there electron and will be stable

That is a tetrahedral arrangement, with an angle of109.5°. Nothing changes in terms of the shape when the hydrogen atoms combine with the carbon, and so the methane molecule is also tetrahedral with109.5°bond angles.

We take v ml of each gases..H2 o2 CH4

H2=V/2, 02=V/32,CH4=V/16

Now limiting one is V/32

V/2/V/32=16 for H2

V/32/V/32=1 for O2

V/16/V/32=2 for CH4

Now th ratio is 16:1:2 (answer)

u r just in 8 nd u did ds amazing

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The bonds in a methane (CH4) molecule are formed by four separate but equivalent orbitals; a single 2s and three 2p orbitals of the carbon hybridize into four sp3 orbitals.

The ion formed after removal of Hydrogen ion (H⁺ ion) from an acid is called acid radical.

Ex: When HCl loses H⁺ ion, it forms Cl⁻ which is an acid radical.

The bonds in amethane(CH4)moleculeareformedby four separate but equivalent orbitals; a single 2s and three 2p orbitals of the carbon hybridize into four sp3orbitals. In the ammoniamolecule(NH3), 2s and 2p orbitals create four sp3hybrid orbitals, one of which is occupied by a lone pair of electrons.

1. Reduced to half its initial value

option 1) is the right answer.

plz like my answer

1 is the right answer

option 1 is the correct answer

option ( 1 ) is the right answer

( 1 ) is the right answer

option 1 is the right answer

option 1 is the right answer

At wt of C = 12Rel Number for C = 40/12 = 3.22Ratio for C = 3.66/3.33 = 1At wt of H = 1Rel Number for H = 6.66/1 = 6.66Ratio for H = 6.66/3.33 = 2At wt of O = 16% of O = 100 – (40+6.66) = 53.34%Rel Number for O = 53.34/16 = 3.33Ratio for O = 3.33/3.33 = 1Hence empirical formula is CH₂O

This is the similar example for your question

A is the normal H B is H2OC is C3H4 after hydrogenation with H it forms into C3H6

First of all 1st reaction is a grignard reaction, so grignard will be formed and further by hydrolysing it cyclohexane will be formed along with hydroxyl ions .

A : heavy water. Deuterium dioxide.Deuterium 2 D2 + O2 ==> 2 D2O

B: Ethane with 2 D atoms.D2 + C2H4 ==> C2H4D2

Your answer is:

(a) edible oil

Carbon dioxide (c) is the carbon compound that we use in daily life while exhaling . Plants use carbon dioxide during photosynthesis. Carbon dioxide trap the terrestrial radiation and keep the earth warm.

hey mate,

your answer is-

a) - edible oil

thnx...

correct answer is -c) carbon dioxide

The compound used in daily life is carbon dioxide.

The baking soda used in the preparation of cake, biscuit, dhokla because it makes the batter or dough softer.

Baking soda increases the size of cake, biscuits and makes soft and spongy dhokla.

Fermantation takes place here.

The process of purifying the crude metals is called refining.

Distillation: -

This is very useful forlow boiling metalslike zinc and mercury. The impure metals are evaporated to obtain the pure metals as distillate.

Liquation: -

In this method alow melting metallike tin can be made to flow on a sloping surface, in this way it is separated from higher melting impurities.

Electrolytic refining: -In this method the impure metal is made to act asanode a strip of some metal in pure form is used ascathode. They are put in a suitable electrolytic bath containing soluble salt of the some metals the more basic metal remains in the solution and the less basic ones go to the anode mud.

Anode :M→Mn+ + ne-

Cathode :Mn+ + ne−→M

Zone refining: -

It is based on the principle that impurities are more soluble in the melt than in thesolidstate of the metal.

The impure metal is heated with the help of circular heaters atone endof the rod of impure metal. The molten zone moves forward along with the heater with impurities and reaches the other end and is discarded.

Pure metal crystallizes out of the melt. The process is repeated several times and heater is moved in thesamedirection.

It is used for purifying semiconductors like B, Ge, Si, Ga

Vapour phase refining:-

The crude metals are free fromimpurities by first converting it into a suitablevolatile compoundby heating it with specific reagent at a lower temperature and then decomposing the volatile compound at somehigher temperature to give the pure metal.

In most of cases Methyl alcohol (CH3OH) is added to ethyl alcohol for the denaturation purpose

In most of cases Methyl alcohol (CH3OH) is added to ethyl alcohol for the denaturation purpose.

thank u

Thanks

a) 1 mole of sulphur has mass = 32gmb) 3*10²³ atoms = 1/2 moles of carbon has mass = 6gmc) 2gm atoms = 2 mol of nitrogen = 2*14 = 28gmd) 7g of Ag

so the least is 6gm.. of carbon.

option B.

Awet khus khus screen hung at the door keeps the room cool. ... I have written answer as " Awet khus khus keeps the room coolifhung at the doorbecause the water particles inkhus khusgains energy from the surrounding to evoporate and thus leaves the surroundingcool."

A khus khus has a ability to pass air from itself, and when air passes from wet khus khus, this creates a cooling effect.

This wet khus khus also show evaporation, and evaporation is an endothermic process means it absorbs energy from surrounding and gives cooling effect.

Ans :- Unit cellis the smallest portion of a crystal lattice. A unit cellis characterized by: Thus, a unit cellis characterised by six parameters, a, b, c, α, β and γ.

A) The oxidation state of Oxygen is reduced, from 0 to -1. So Ammonia is reducing agent. Nitrogen and hydrogen are oxidized to a state of +2 and +1 respectively.

b) Flourine is reduced to floride ion.. oxidation state of -1.Water is the reducing agent.. c) Iron is reduced from an oxidation state of +3 to 0.. Carbon is oxidized from +2 state to +4. so carbon monoxide is reducing agent.

Cp(specific heat at constant pressure)Cv(specific heat at constant volume)When a gas is heated at constant volume,no external work is done and so the heat supplied is consumed only in increasing the internal energy of a gas.But if the gas is heated at constant pressure , the gas expands against the external pressure so does some external work.In this case the supplied heat is used up in increasing the internal energy of the gas and in doing some external work .Since the internal energy is depends only on temperature,for the same rise of temperature the internal energy of a mass of a gas will increase by the same amount whether the pressure or volume remains constant.But since external work is additionally done for constant pressure than at constant volume to produce the same rise in temperature of the gas.

Let us consider one mole of an ideal gas enclosed in a cylinder provided with a frictionless piston of area A. Let P, V and T be the pressure, volume and absolute temperature of gas respectively as shown in below figure.

A quantity of heatdQis supplied to the gas. To keep the volume of the gas constant, a small weight is placed over the piston. The pressure and the temperature of the gas increase toP + dP and T + dTrespectively. This heat energydQis used to increase the internal energydUof the gas. But the gas does not do any work(dW = 0).

∴dQ = dU = 1 × Cv× dT …... (1)

The additional weight is now removed from the piston. The piston now moves upwards through a distance dx, such that the pressure ofthe enclosed gas is equal to the atmospheric pressureP. The temperature of the gas decreases due to the expansion of the gas.

Now a quantity of heatdQ’is supplied to the gas till its temperature becomesT + dT. This heat energy is not only used to increase the internal energydUof the gas but also to do external workdWin moving the piston upwards.

∴ dQ’ = dU + dW

Since the expansion takes place at constant pressure,

dQ ′ = CpdT

∴ CpdT = CvdT + dW …... (2)

Work done, dW = force × distance == P × A × dx

dW = P dV (since A × dx = dV, change in volume)

∴ CpdT = CvdT + P dV …... (3)

The equation of state of an ideal gas is

PV = RT

Differentiating both the sides

PdV = RdT …... (4)

Substituting equation (4) in (3),

CpdT = CvdT + RdT

Cp= Cv+ R

for 22.4 L , no of moles = 1

i)so, for 1.12l, no of moles will be = 1.12/22.4 = 1/20 moles

ii) 3.01 × 10²³ molecules = 3.01×10²³/6.02×10²³ = 1/2 moles.

Parboiling involves partial boiling of the paddy before milling in order to increase its nutritional value, to change the texture of cooked rice, and reduce the breakage in milling. Parboiling is done in three steps: Soaking, steaming and drying.