Name the compound formed when an hydroxyl group is attached to a phenyl group.

Name the compound formed when an hydroxyl group is attached to a phenyl group.
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ANSWER: PHENOL
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The fat of a common mussel-secretes a sticky glue that can be used to make heart implants. The unique chemical compound present in the glue is: (1) Amino phenyl alanine (2) Hydroxy phenyl alanine (3) Phenyl alanine (4) Dihydroxy phenyl alanine

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The fat of a common mussel-secretes a sticky glue that can be used to make heart implants. The unique chemical compound present in the glue is: (1) Amino phenyl alanine (2) Hydroxy phenyl alanine (3) Phenyl alanine (4) Dihydroxy phenyl alanine

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Phenol is an ortho-para director because the hydroxyl group : (a) donates electrons that increase electron density at ortho and para positions favoring nucleophilic attack. (b) donates electrons that increase electron density at ortho and para positions favoring electrophilic attack. (c) donates electrons to the ortho and para positions and attracts electrons away from meta positions favoring nucleophilic attack of the ring. (d) donates electrons to the ortho and para positions and attracts electrons away from meta positions favoring electrophilic attack on the ring.

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Last Answer : donates electrons that increase electron density at ortho and para positions favoring electrophilic attack.

The greater acidity of carboxylic acids compared to alcohols arises primarily from : (a) the electron-donating effect of the hydroxyl group (b) the electron-withdrawing effect of the carboxyl oxygen (c) the acidity of α-hydrogens of carboxylic acids (d) the resonance stability associated with the carboxylate ion

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Last Answer : the resonance stability associated with the carboxylate ion

2-Butanol is optically active because it contains : (a) an asymmetric carbon (b) a plane of symmetry (c) a hydroxyl group(d) a centre of symmetry

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Which of the following is true when HCL is passed through water. (i) It does not ionize in the solution as it is a covalent compound (ii) It ionizes in the solution (iii) It gives both hydrogen and hydroxyl ions in the solution (iv) It forms hydronium ion in the solution due to the combination of hydrogen ion with water molecule. (a) (i) only (b) (iii) only (c) (ii) and (iv) only (d) (iii) and (iv)

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Last Answer : (c) (ii) and (iv) only

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Reimer-Tiemann reaction introduces an aldehyde group on to the aromatic ring of phenol, ortho to the hydroxyl group. This reacrtion involves electroph

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The amino acid containing hydroxyl group: (A) Alanine (B) Isoleucine (C) Arginine (D) Threonine

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Reducing ability of carbohydrates is due to (A) Carboxyl group (B) Hydroxyl group (C) Enediol formation (D) Ring structure

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Iodine value is used to estimate – (1) Hydroxyl groups in oil (2) Alkali, content in oil (3) Unsaturation in oil (4) Carboxylic groups in oil

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A solution of `(+)`-2-chloro-2-phenyl ethane in toluene racemises slowly in the presence of small amount of `SbCl_(5)`, due to the formation of:

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Ethyl phenyl ether on reaction with excess HI yields

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The codon for phenyl Alanine is (A) AAA (B) CCC (C) GGG (D) UUU

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This abnormal metabolite may be responsible for the neurological manifestation of pernicious anemia: (A) Taurine (B) Methyl malonic acid (C) Xantherunic acid (D) Phenyl pyruvic acid

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Side chains of all following amino acids contain aromatic rings except (A) Phenyl alanine (B) Alanine (C) Tyrosine (D) Tryptophan

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One round of Edman degradation of the peptide: H2N— Gly—Arg—Lys—Phe— Asp— COOH would result in which of the following structures or their phenyl isothiocyanate derivatives? (A) H2N—Gly—Arg—COOH + H2N—Lys— Phe— Asp—COOH (B) H2N—Gly—Arg—Lys—Phe—COOH + Asp (C) H2N—Arg—Lys—Phe—Asp—COOH + Gly (D) H2N—Gly—Arg—Lys—COOH + H2N—Phe —Asp—COOH

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Last Answer : Answer : C

The first amino acid incorporated in a polypeptide in a ribosome of a human is (A) N formyl methionine (B) Methionine (C) Phenyl alanine (D) Hydroxy lysine

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The amino acid which synthesizes many hormones: (A) Valine (B) Phenyl alanine (C) Alanine (D) Histidine

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Following events occur in the cytoplasm and not inside storage vesicles, except (a) Conversion of tyrosine to dopa (b) Conversion of dopa to dopamine (c) Conversion of dopamine to norepinephrine (d) Conversion of dopamine to 3,4 dihydroxy phenyl acetic acid

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Last Answer : Ans: C

Which of the following is a Dominant Autosomal Disorder? (1) Albinism (2) Cystic Fibrosis (3) Phenyl Ketorunia (4) Alzheimer's Disease

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Is phenyl alanine an essential amino acid?

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Last Answer : Yes.

The pineapple which under natural condition is difficult to blossom has been made to produce fruits throughout the year by application of (a) NAA, 2, 4-D (b) Phenyl acetic acid (c) Cytokinin (d) IAA, IBA.

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Phenyl mercuric acetate (PMA) results in (a) reduced photosynthesis (b) reduced transpiration (c) reduced respiration (d) killing of plants.

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A person affected with phenyl ketonuria ,lack an enzyme that converts the amino acid Phenyl alanine into

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