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Correct answer is (C) CH₂=CH – Cl 

Correct answer is (B) Guanine, Adenine, Cytosine

Correct answer is (B) Vitamin

 Ligands: The ions or molecules bound to the central atom/ion in the coordination entity are called ligands. These may be simple ions such as Cl^-, small molecules such as H₂O or NH₃, larger molecules such as H₂N CH₂CH₂ NH₂ or N(CH₂CH₂NH₃)₃ or even macromolecules such as unidentate proteins.

When a ligand is bound to a metal through a single donor atoms such as Cl^-, H₂O or NH₃,  the ligand is said to be unidentate Eg.- Cl, H₂O

Bidentate: When a ligand is bound through two donor atoms, the ligand is called bidentate ligands.

Eg.- H₂N, CH₂CH₂NH₂ or C₂O₄^2-

Polydentate: N(CH₂CH₂NH₂) Hexadentate ligand - (EDTA⁴⁺)

In the Mendeleev periodic table, the vertical columns are called groups and the horizontal rows are called periods.

Magnesium is the element with the electronic configuration of 2,8,2 as its atomic number is 12, since the atomic number is the sum of all the electrons present in the electronic configuration.

I. KBr + Cl₂ → HCl(aq.) + Cl Br↑

II. I₂ + H₂O + Cl₂ → 2ICl + H₂O

III. 6NaOH + 3Cl₂ → 5NaCl + NaClO₃ + 3H₂O

Magnesium is the element with the electronic configuration of 2,8,2 as its atomic number is 12, since the atomic number is the sum of all the electrons present in the electronic configuration.

The answer is Magnesium

According to the Newlands law of octaves, every eighth element had properties similar to that of the first element.

(1) It is not applicable for strong electrolyte. 

(2) It is not applicable for saturated solution.

Correct option: (B) α₂ > α₁

Explanation: 

∴ µ(CCl₄) = 0 and µ(C₆H₆) = 2.5

So, α₂ > α₁

Answer:Proteins

In primary dehydration intracellular fluid volume is reduced

Answer: 1800–2500 ml

The membrane which permits the passage of pure solvent molecules to pass through it and not the solute particles is called semipermeable membrane while the membrane which allows some substances to pass through it more readily than others is known as selectively permeable membrane .
 Moreover, a selectively permeable membrane requires constant energy for its maintenance, whereas a semipermeable membrane does not require constant energy for its maintenance.

Dietary fiber consists of non-starch polysaccharides and other plant components such as cellulose, resistant starch, resistant dextrins, inulin, lignins, chitins (in fungi), pectins, beta-glucans, and oligosaccharides.

Refraction is the bending of light as it passes from one substance to another. Here the light ray passes from air to glass and back to air. The bending is caused by the differences in density between the two substance. 

D-Galactose is an epimer of D-glucose because the two sugars differ only in the configuration at C-4 . D-Mannose is an epimer of D-glucose because the two sugars differ only in the configuration at C-2 . When a molecule such as glucose converts to a cyclic form, it generates a new chiral centre at C-1

Glycogen is as an important energy reservoir; when energy is required by the body, glycogen in broken down to glucose, which then enters the glycolytic or pentose phosphate pathway or is released into the bloodstream. Glycogen is also an important form of glucose storage in fungi and bacteria.

Methene do not exist in nature. This is because the alkene family have the general formula C _n H _2n where n is a natural number(which starts from 1). If we substitute 1 in place of n, then we get the formula CH₂. CH₂ has no independent existence, as the tetravalent nature of carbon is being violated.To have a double bond you need at least two atoms, so ethene is the smallest possible alkene.

Methyne do not exist in nature because the alkyne family have the general formula C _n H _2n-2 where n is a natural number(which starts from 1). If we substitute 1 in place of n, then we get the formula CH₀ which cannot exist. So, the first member of this series is ethyne. 

Hence, the structure of methyne is not possible to find out.

Answer: Lactose

Lactose is a disaccharide whose repeating unit is made up of glucose and galactose.

Maltose is a disaccharide whose repeating unit is made up of two units of glucose. Lactose is a disaccharide whose repeating unit is made up of glucose and galactose. Sucrose is a disaccharide whose repeating unit is made up of glucose and fructose. Galactose is a monosaccharide simple sugar. 

The average urine sample tests at about 6.0.

pH is a measure of the amount of Hydrogen ions (H+) in a solution. Ions are just atoms that have an electric charge on them, so H+ is a hydrogen atom with charge of 1. Even in pure water ions tend to form due to random processes (producing some H+ and OH- ions). The amount of H+ that is made in pure water is about equal to a pH of 7. That's why 7 is neutral.

Calculate moles of bicarbonate and carbonate:
HCO₃¯: (0.384 mol/L)(0.2250 L) = 0.0864 mol
CO₃²¯: (0.239 mol/L)(0.2250 L) = 0.053775 mol

The hydroxide reacts with the acid (the bicarbonate):
HCO₃¯ decreases: 0.0864 - 0.0464 = 0.0400 mol
CO₃²¯ increases: 0.053775 + 0.0464 = 0.100175 mol

Need pKa of bicarbonate:
K_a of HCO₃¯ is the same as the K_a2 of H₂CO₃.
K_a of HCO₃¯ = 4.7 x 10¯¹¹
pK_a = 10.252

Use Henderson-Hasselbalch Equation:
pH = 10.328 + log (0.100 / 0.04)
pH = 10.328 + 0.398 = 10.726

Acetylene poses unique hazards based on its high flammability, instability and unique storage and transportation requirements. Acetylene is highly unstable. High pressure or temperatures can result in decomposition that can result in fire or explosion.

The name of two ores of copper:–

(a) Copper Pyrites – CuFeS₂ 

(b) Azurite – 2CuCO₃.Cu(OH)₂

Lucas test is used to  Alcohols

Fehling test is positive for Acetaldehyde 

No. of Y (ccp) = 4

 No. of X (octahedral void) = 4

 X : Y = 4 : 4

 XY

Benzaldehyde is not  aldol condensation.

The genral formula of carbohydrate is C_x(H₂O)y

The carbonyl compound formed when ethanol gets oxidised using this copper-based catalyst can also be obtained by ozonolysis of But-2-ene.

C₂H₅OH +Cu ->(at573k) = CH₃CHO

But-2-ene + ozonolysis = CH₃CHO

Used in photovoltanic cell

The number of chiral C- atom in cyclic structure of glucose is  4.

An emulsion can be defined as a colloid consisting of two or more non-homogenous type of liquids wherein one of the liquid contains the dispersion of the different form of liquids.

Properties Of Emulsions:

• Emulsions contain both a continuous and the dispersed with the boundary coming between the phases that are called “interface”.

• Emulsions have a cloudy appearance due to many phase interfaces scattering light passing through the emulsions.

• Emulsions appear in white colour when the light is dispersed in equal proportions.

• If the emulsion is dilute, then higher-frequency and the low-wavelength type of light will be scattered in more fractions, and this kind of emulsion will appear in blue in colour. This is also referred to as the Tyndall effect.

Types of Emulsion:

Emulsions can be classified on the basis of the properties of the dispersed phase and the dispersion medium.

1) Oil in water (O/W):

In this type of emulsion, the oil will be the dispersed phase and water will be the dispersion medium. The best example for o/w emulsion is milk. In milk, the fat globules (which act as the dispersed phase) are suspended in water (which acts as the dispersion medium).

2) Water in oil (w/o):

In this type, water will be the dispersed phase and oil will be the dispersion medium. Margarine (a spread used for flavouring, baking and working) is an example of water in oil emulsion.

d-block block of elements are known as transition elements .