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Replacement of a hydrogen atom in a hydrocarbon by an alkoxy or carboxyl group yields a class of compounds known as ethers. Ethers are classified as symmetrical or unsymmetrical on the basis of groups attached to the oxygen atoms. Diethyl ether, a symmetrical ether, has been widely used as an inhalation anesthetic. Ethers can be prepared by acid catalyzed intermolecular dehydration of alcohols and Williamson's synthesis. Acid catalyzed dehydration of alcohols is not generally preferred as it gives a mixture of elimination and substitution products. In Williamson's synthesis, an alkyl halide is allowed to react with sodium alkoxide. Ethers containing substituted Alkyl groups may also be prepared by this method. The C-O bond in ether is weakly polar and is cleaved under drastic conditions with excess of hydrogen halides. In electrophilic substitution, the alkoxy group deactivates the aromatic ring and directs the incoming group to ortho and para positions.
The major product in the reaction of anisole with bromine in ethanoic acid, is :

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In the formation of coordination complexes, if the inner \(d\) orbital \((n - 1)d\) is used in hybridisation, the complex, is called an inner orbital or low spin or spin paired complex. And if it uses outer \(d\) orbital \((nd)\) in hybridisation (like \(sp^3d^2\)), it is called outer orbital or high spin or spin free complex. The degeneracy of the \(d\) orbitals has been removed due to ligand electron-metal electron repulsions in the complex. This splitting of the degenerate levels due to the presence of ligands in a definite geometry is termed as crystal field splitting. For coordination complexes, the magnetic moment is determined by the number of unpaired electrons and is calculated by using the 'spin-only' formula, \(\mu = \sqrt{n(n+2)}\) where \(n\) is the number of unpaired electrons and \(\mu\) is the magnetic moment in units of Bohr magneton \((BM)\). The coordination compounds are of great importance. These compounds are widely present in the mineral, plant and animal worlds and are known to play many important functions in the area of analytical chemistry, metallurgy, biological systems, industry and medicine.
Fe(II) octahedral complexes can show different 'spin only' magnetic moments for arrangements in the presence of weak and strong ligands. The 'spin only' magnetic moments of these complexes with weak and strong ligands, respectively, are

Match List - I with List - II.

List - I	List - II
(A) Raoult's Law	(I) \(\pi=C R T\)
(B) Henry's Law	(II) \(P=x_1 p_1^0+x_2 p_2^0\)
(C) Elevation in Boiling point	(III) \(P=K_H x\)
(D) Osmotic Pressure	(IV) \(\Delta T_b=k_b m\)

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Correct IUPAC name of \([\text{Co(NH}_3\text{)}_5\text{Cl}]\text{Cl}_2\) is:

An aqueous solution of glucose is labelled as 20% w/w. If the density of the solution is 1.2 g/mL the molality of the solution.

Which of the following reagents convert an alcohol into an alkyl chloride?
(A) Conc. Hydrogen Chloride
(B) Phosphorus trichloride
(C) Phosphorus pentachloride
(D) Thionyl Chloride
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The carbohydrate used as storage molecule in plants is

Arrange the following compounds in the increasing order of their acidic strength :
(A) 3,5-dinitrophenol
(B) Propan-1-ol
(C) 2,4,6-trinitrophenol
(D) 3-nitrophenol
(E) 4-methyl phenol
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The transfer of pollen grains from one plant to the stigma of a different plant is known as:

Match List-I with List-II

List-I	List-II
(A) The standard resistance coil	(I) Nickel-chromium alloy
(B) The connecting wire	(II) tin-lead alloy
(C) The heating wire	(III) copper metal
(D) The fuse wire	(IV) copper manganese nickel alloy

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In flowering plants, zygote develops into :

Match List-I with List-II

List-I	List-II
(A) Freons	(I) Paint remover
(B) DDT	(II) Refrigeration
(C) Dichloromethane	(III) Fire extinguisher
(D) Tetrachloromethane	(IV) Insecticide

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The maximum value of \(z=5 x+7 y\) subjected to constraints \(x+y \leq 5, x \geq 0, y \geq 0\) is :