Ester having Smell of Orange?

Ester having Smell of Orange?
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1 Answer

Answer :

Oetyl Acetate
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Description : Whichis the ester that gives pineapple its  pleasant smell?

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Which one of the following organic compounds has fruity smell? (1) Alcohol (2) Aldehyde (3) Ester (4) Ether

Description : Which one of the following organic compounds has fruity smell? (1) Alcohol (2) Aldehyde (3) Ester (4) Ether

Last Answer : (3) Ester Explanation: Esters are common in organic chemistry and biological materials, and often have a characteristic pleasant, fruity odour. This leads to their extensive use in the fragrance and ... ester as the reaction product. Esters are widespread in nature and are widely used in industry.

Which one of the following organic compounds has fruity smell? (1) Alcohol (2) Aldehyde (3) Ester (4) Ether

Description : Which one of the following organic compounds has fruity smell? (1) Alcohol (2) Aldehyde (3) Ester (4) Ether

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Which of the following odors does the ester, methyl salicylate, produce? Is the odor that of: w) cinnamon x) avocado y) orange z) oil of wintergreen

Description : Which of the following odors does the ester, methyl salicylate, produce? Is the odor that of: w) cinnamon x) avocado y) orange z) oil of wintergreen

Last Answer : ANSWER: D -- OIL OF WINTERGREEN

The local anaesthetics having amide linkage differ from those having ester linkage in that the amidelinked local anaesthetics: A. Are not surface anaesthetics B. Have a shorter duration of action C. Are degraded in the plasma D. Do not show cross-sensitivity with esterlinked local anaesthetic

Description : The local anaesthetics having amide linkage differ from those having ester linkage in that the amidelinked local anaesthetics: A. Are not surface anaesthetics B. Have a shorter duration of action C. Are degraded in the plasma D. Do not show cross-sensitivity with esterlinked local anaesthetic

Last Answer : D. Do not show cross-sensitivity with esterlinked local anaesth

Why can I still smell orange in a bottle that I have washed 10x?

Description : Why can I still smell orange in a bottle that I have washed 10x?

Last Answer : Citrus is stubborn. But really, glass can’t be impervious, things are bumpy when you get real close, and I imagine scents are real small. You get really bumpy and really small together and they get to be really good friends. There is no real science in my answer.

If I am coloured, I smell, if I am burned, I smell, orange and yellow will melt me. What am I? -Riddles

Description : If I am coloured, I smell, if I am burned, I smell, orange and yellow will melt me. What am I? -Riddles

Last Answer : A Candle.

Acid and alcohol react to form (a) Aldehyde and water (b) Ketone and water (c) Acid anhydride and water (d) Ester and water

Description : Acid and alcohol react to form (a) Aldehyde and water (b) Ketone and water (c) Acid anhydride and water (d) Ester and water

Last Answer : Ans:(d)

Hydrolysis of ester in catalysed by acid. Rate of hydrolysis of ester were obtained initially and after some ester has been hydrolysed as `R_(0)` and

Description : Hydrolysis of ester in catalysed by acid. Rate of hydrolysis of ester were obtained initially and after some ester has been hydrolysed as `R_(0)` and

Last Answer : Hydrolysis of ester in catalysed by acid. Rate of hydrolysis of ester were obtained initially and after some ... 0) gt R_(t)` D. Cannot be determined

Molecular formula of smallest ester which contain one chiral carbon is :

Description : Molecular formula of smallest ester which contain one chiral carbon is :

Last Answer : Molecular formula of smallest ester which contain one chiral carbon is : A. `C_(4)H_(8)O_(2)` B. `C_(5)H_(12)O ... )H_(12)O_(2)` D. `C_(5)H_(10)O_(2)`

Molecular formula of smallest ester which contain one chiral carbon is :

Description : Molecular formula of smallest ester which contain one chiral carbon is :

Last Answer : Molecular formula of smallest ester which contain one chiral carbon is : A. `C_(4)H_(8)O_(2)` B. `C_(5)H_(12)O ... )H_(12)O_(2)` D. `C_(5)H_(10)O_(2)`

The major product (ester) of the following reaction is

Description : The major product (ester) of the following reaction is

Last Answer : The major product (ester) of the following reaction is A. A single stereoisomer (optically ... mixture of four stereoisomers (two racemic mixtures)

What is the Formula for ethyl ester?

Description : What is the Formula for ethyl ester?

Last Answer : what is the formula of the ester formed from a reaction ofsodium hydroxide and ethanol

Benefits of creatine ethyl ester?

Description : Benefits of creatine ethyl ester?

Last Answer : The chemical creatine ethyl ester is marketed as a great way to increase muscle mass. Sadly though there has been no proven side effects, or even clinical proof that this will work.

In nucleotides, phosphate is attached to sugar by (A) Salt bond (B) Hydrogen bond (C) Ester bond (D) Glycosidic bond

Description : In nucleotides, phosphate is attached to sugar by (A) Salt bond (B) Hydrogen bond (C) Ester bond (D) Glycosidic bond

Last Answer : Answer : C

The carbon of the pentose in ester linkage with the phosphate in a nucleotide structure is (A) C1 (B) C3 (C) C4 (D) C5

Description : The carbon of the pentose in ester linkage with the phosphate in a nucleotide structure is (A) C1 (B) C3 (C) C4 (D) C5

Last Answer : Answer : D

Wolman’s disease is due to deficiency of (A) Cholesteryl ester hydrolase (B) Hexosaminidase A (C) α-Fucosidase (D) Arylsulphatase A

Description : Wolman’s disease is due to deficiency of (A) Cholesteryl ester hydrolase (B) Hexosaminidase A (C) α-Fucosidase (D) Arylsulphatase A

Last Answer : Answer : A

Phospholipase C attacks the ester bond liberating 1, 2-diacylglycerol and a phosphoryl base at position (A) 1 (B) 2 (C) Both (A) and (B) (D) 3

Description : Phospholipase C attacks the ester bond liberating 1, 2-diacylglycerol and a phosphoryl base at position (A) 1 (B) 2 (C) Both (A) and (B) (D) 3

Last Answer : Answer : D

Retinal exists as an ester with higher fatty acids in the (A) Liver (B) Kidney (C) Lung (D) All of these

Description : Retinal exists as an ester with higher fatty acids in the (A) Liver (B) Kidney (C) Lung (D) All of these

Last Answer : Answer : D

Cholesterol circulates in blood stream chiefly as (A) Free cholesterol (B) Ester cholesterol (C) Low density lipoproteins (D) Low density lipoproteins and high density lipoproteins

Description : Cholesterol circulates in blood stream chiefly as (A) Free cholesterol (B) Ester cholesterol (C) Low density lipoproteins (D) Low density lipoproteins and high density lipoproteins

Last Answer : Answer : D

Most animal tissues contain appreciable amounts of lipid, when in the form of depot fat it consists largely of (A) Cholesterol ester (B) Phosphatides (C) Chylomicrons (D) Triacylglycerol

Description : Most animal tissues contain appreciable amounts of lipid, when in the form of depot fat it consists largely of (A) Cholesterol ester (B) Phosphatides (C) Chylomicrons (D) Triacylglycerol

Last Answer : Answer : D

Instead of ester link plasmalogens possess an other link in position: (A) α (B) β (C) γ (D) None of these FATS AND FATTY ACID METABOLISM 93

Description : Instead of ester link plasmalogens possess an other link in position: (A) α (B) β (C) γ (D) None of these FATS AND FATTY ACID METABOLISM 93

Last Answer : Answer : B

Salivary lipase hydrolyses the ester bond at (A) Position 1 of triglycerides (B) Position 2 of triglycerides (C) Position 3 of triglycerides (D) All of these

Description : Salivary lipase hydrolyses the ester bond at (A) Position 1 of triglycerides (B) Position 2 of triglycerides (C) Position 3 of triglycerides (D) All of these

Last Answer : Answer : C

Palmitic, oleic or stearic acid ester of cholesterol used in manufacture of cosmetic creams is (A) Elaidic oil (B) Lanoline (C) Spermaceti (D) Chaulmoogric oil FATS AND FATTY ACID METABOLISM 75

Description : Palmitic, oleic or stearic acid ester of cholesterol used in manufacture of cosmetic creams is (A) Elaidic oil (B) Lanoline (C) Spermaceti (D) Chaulmoogric oil FATS AND FATTY ACID METABOLISM 75

Last Answer : Answer : B

Which bond is present in the primary structure of protein? (A) Ester (B) Hydrogen (C) Ionic bond (D) Peptide

Description : Which bond is present in the primary structure of protein? (A) Ester (B) Hydrogen (C) Ionic bond (D) Peptide

Last Answer : Answer : D

In abetalipoproteinemia, the biochemical defect is in (A) Apo-B synthesis (B) Lipprotein lipase activity (C) Cholesterol ester hydrolase (D) LCAT activity

Description : In abetalipoproteinemia, the biochemical defect is in (A) Apo-B synthesis (B) Lipprotein lipase activity (C) Cholesterol ester hydrolase (D) LCAT activity

Last Answer : Answer : A

At the lowest energy level α-helix of polypeptide chain is stabilised (A) By hydrogen bonds formed between the H of peptide N and the carbonyl O of the residue (B) Disulphide bonds (C) Non polar bonds (D) Ester bonds

Description : At the lowest energy level α-helix of polypeptide chain is stabilised (A) By hydrogen bonds formed between the H of peptide N and the carbonyl O of the residue (B) Disulphide bonds (C) Non polar bonds (D) Ester bonds

Last Answer : Answer : A

Which of the following statement is correct about membrane cholesterol? (A) The hydroxyl group is located near the centre of the lipid layer (B) Most of the cholesterol is in the form of a cholesterol ester (C) The steroid nucleus form forms a rigid, planar structure (D) The hydrocarbon chain of cholesterol projects into the extracellular fluid

Description : Which of the following statement is correct about membrane cholesterol? (A) The hydroxyl group is located near the centre of the lipid layer (B) Most of the cholesterol is in the form ... forms a rigid, planar structure (D) The hydrocarbon chain of cholesterol projects into the extracellular fluid

Last Answer : C

Decomposition of the acetyl salicylic acid at room temperature most likely would occur by (a) Oxidation of the ester (b) Reduction of the carboxylic acid (c) Hydrolysis of the ester

Description : Decomposition of the acetyl salicylic acid at room temperature most likely would occur by (a) Oxidation of the ester (b) Reduction of the carboxylic acid (c) Hydrolysis of the ester

Last Answer : Ans: C

What are soaps? (1) Salts of silicates (2) Ester of heavy fatty acids (3) Sodium or potassium salts of heavier fatty acids (4) Mixture of glycerol and alcohol

Description : What are soaps? (1) Salts of silicates (2) Ester of heavy fatty acids (3) Sodium or potassium salts of heavier fatty acids (4) Mixture of glycerol and alcohol

Last Answer : (3) Sodium or potassium salts of heavier fatty acids

This substance is sweet-smelling and is used in making perfumes and flavouring agents. It is called- (1) Sodium ethanoate (2) Lime water (3) Hydrogencarbonates (4) Ester

Description : This substance is sweet-smelling and is used in making perfumes and flavouring agents. It is called- (1) Sodium ethanoate (2) Lime water (3) Hydrogencarbonates (4) Ester

Last Answer : (4) Ester Explanation: The correct answer is Ester. An ester is a sweet-smelling substance, used in making perfumes and flavouring agents.

During preparation of esters from a carboxylic acid and an alcohol in the presence of an acid catalyst, water or the ester formed should be removed as soon as it is formed.

Description : During preparation of esters from a carboxylic acid and an alcohol in the presence of an acid catalyst, water or the ester formed should be removed as soon as it is formed.

Last Answer : Ans. The formation of esters from a carboxylic acid and an alcohol in the presence of acid catalyst in a reversible reaction. To shift the equilibrium in the forward direction, the water or ester formed should be removed as fast as it is formed.

Which of the following is the least likely to be involved in stabilising the three-dimensional folding of most proteins(a) Hydrogen bonds (b) Electrostatic interaction (c) Hydrophobic interaction (d) Ester bonds

Description : Which of the following is the least likely to be involved in stabilising the three-dimensional folding of most proteins (a) Hydrogen bonds (b) Electrostatic interaction (c) Hydrophobic interaction (d) Ester bonds

Last Answer : (d) Ester bonds

Pick out the wrong statemen(A) Autocatalytic reactions are exemplified by microbial fermentation reactions (B) The slowest step has the greatest influence on the overall reaction rate in case of an irreversible series reaction (C) The fractional conversion at any time is same for both the constant as well as the variable volume system in case of an irreversible unimolecular type first order reaction (D) Hydrolysis of ester in presence of alkali or acid is a zero order reaction

Description : Pick out the wrong statemen (A) Autocatalytic reactions are exemplified by microbial fermentation reactions (B) The slowest step has the greatest influence on the overall reaction rate in case of an ... reaction (D) Hydrolysis of ester in presence of alkali or acid is a zero order reaction

Last Answer : (D) Hydrolysis of ester in presence of alkali or acid is a zero order reaction

Which of the following is the main structural feature of proteins? (a) Peptide linkage (b) Ester linkage (c) Ether linkage (d) α,β-Linkage

Description : Which of the following is the main structural feature of proteins? (a) Peptide linkage (b) Ester linkage (c) Ether linkage (d) α,β-Linkage

Last Answer : Peptide linkage

The ethyl derivative of acetoacetic ester on basic-hydrolysis gives (a) Acetic acid (b) Acetic acid and propionic acid (c) Propionic acid (d) Acetic acid and n-butyric acid

Description : The ethyl derivative of acetoacetic ester on basic-hydrolysis gives (a) Acetic acid (b) Acetic acid and propionic acid (c) Propionic acid (d) Acetic acid and n-butyric acid

Last Answer : Acetic acid

Base-catalyzed condensation of two ester molecules to form an alcohol and β-keto ester is called (a) Claisen condensation (b) Corey-House reaction (c) Aldol condensation (d) Transesterification

Description : Base-catalyzed condensation of two ester molecules to form an alcohol and β-keto ester is called (a) Claisen condensation (b) Corey-House reaction (c) Aldol condensation (d) Transesterification

Last Answer : Claisen condensation

Hydrolysis of an ester can be accomplished by(a) base-promoted hydrolysis(b) acid-catalyzed hydrolysis(c) both of the above(d) neither of the above

Description : Hydrolysis of an ester can be accomplished by (a) base-promoted hydrolysis (b) acid-catalyzed hydrolysis (c) both of the above (d) neither of the above

Last Answer : both of the above

Consider a small aliphatic 1° amine, 1° alcohol, ester, carboxylic acid, and amide, all of similar molecular weight. Which one is most likely to have thehighest boiling point?(a) The amide(b) The alcohol(c) The ester(d) The carboxylic acid

Description : Consider a small aliphatic 1° amine, 1° alcohol, ester, carboxylic acid, and amide, all of similar molecular weight. Which one is most likely to have the highest boiling point? (a) The amide (b) The alcohol (c) The ester (d) The carboxylic acid

Last Answer : The amide

A compound undergoes reduction with LiAlH4. It also dissolves in aqueous NaOH from which it can be recovered by addition of HCl. The compound is (a) a carboxylic acid (b) an ester (c) an acid anhydride (d) an alcohol

Description : A compound undergoes reduction with LiAlH4. It also dissolves in aqueous NaOH from which it can be recovered by addition of HCl. The compound is (a) a carboxylic acid (b) an ester (c) an acid anhydride (d) an alcohol

Last Answer : a carboxylic acid

Which reaction does not yield an ester as one of the products?(a) A carboxylic acid is heated with an alcohol (b) A Grignard reagent is added to a carboxylic acid (c) An acid halide is treated with an alcohol (d) An alkyl halide is heated with the salt of a carboxylic acid

Description : Which reaction does not yield an ester as one of the products? (a) A carboxylic acid is heated with an alcohol (b) A Grignard reagent is added to a carboxylic acid (c) An acid halide is treated with an alcohol (d) An alkyl halide is heated with the salt of a carboxylic acid

Last Answer : A Grignard reagent is added to a carboxylic acid

Which of the following conditions will drive the equilibrium of the Fischer esterification towards ester formation? (a) addition of water (b) removal of water as it is formed (c) addition of alcohol (d) both (b) and (c)

Description : Which of the following conditions will drive the equilibrium of the Fischer esterification towards ester formation? (a) addition of water (b) removal of water as it is formed (c) addition of alcohol (d) both (b) and (c)

Last Answer : both (b) and (c)