Description : The strongest base in aqueous solution among the following amines is :
Last Answer : The strongest base in aqueous solution among the following amines is : A. N,N- ... N-ethylethanamine C. M-methylmethanamine D. ethanamine
Description : The diazonium salts are the reaction products of the reaction of nitrous acid with (a) primary aliphatic amines (b) primary aromatic amines (c) secondary aliphatic amines (d) secondary aromatic amines
Last Answer : primary aromatic amines
Description : Aliphatic primary amines react with cold nitrous acid to form (a) Alcohols (b) Diazonium salts (c) Nitriles (d) Nitroalkanes
Last Answer : Alcohols
Description : Pick out the wrong statement regarding the solubility characteristics of high polymers. (A) Greater the degree of cross-linking in the polymer, lesser is its solubility (B) Polymers having more ... of the solvent (D) High molecular weight polymers on dissolving gives solution of very low viscosity
Last Answer : (D) High molecular weight polymers on dissolving gives solution of very low viscosity
Description : Two aliphatic aldehydes P and Q react in th presence of aqueous `k_(2)CO_(3)` to give compound R, which upon treatment with HCN provides compound S. O
Last Answer : Two aliphatic aldehydes P and Q react in th presence of aqueous `k_(2)CO_(3)` to give compound R, which ... shown below: The compound S is B. C. D.
Description : Two aliphatic aldehydes (P) and (Q) react in the presence of aqueous `K_(2)CO_(3)` to give compound (R ) which upon treatment with HCN gives compound(
Last Answer : Two aliphatic aldehydes (P) and (Q) react in the presence of aqueous `K_(2)CO_(3)` to give compound (R ) ... (P) and (Q), respectively, are: B. C. D.
Description : .Which of the following statements is correct about an aqueous solution of an acid and of a base? (i) Higher the pH, stronger the acid (ii) Higher the pH, weaker the acid (iii) Lower the pH, stronger the base (iv) Lower the pH, ... (i) and (iii) (b) (ii) and (iii (c) (i) and (iv) (d) (ii) and (iv)
Last Answer : (d) (ii) and (iv)
Description : When ammonia is added to an alkyl halide, in the presence of base : (a) primary amines form (b) amides form (c) nitrated alkyl halides form (d) quaternary ammonium salts form
Last Answer : primary amines form
Description : Alkyl halides react with ammonia in the presence of base to form : (a) primary amines (b) nitrated alkyl halides (c) amides (d) quaternary ammonium salts
Last Answer : primary amines
Description : The volume of `0.1 N` dibasic acid sufficient to neutralize 1g of a base that furnishes `0.04` mole of `OH^-` in aqueous solution is :
Last Answer : The volume of `0.1 N` dibasic acid sufficient to neutralize 1g of a base that furnishes `0.04` mole of `OH^-` ... 400 mL B. 600 mL C. 200 mL D. 80 mL
Description : Which of the following is the strongest base in aqueous solution? (1) Diethylamine (2) Triethylamine (3) Ammonia (4) Ethylamine
Last Answer : (1) Diethylamine Explanation: Amines are organic derivatives of ammonia, in which one, two, or all three of the hydrogens of ammonia are replaced by organic groups. All aliphatic primary amines are stronger bases than ammonia.
Description : Which of the following is the strongest base in aqueous solution ? (1) Diethylamine (2) Triethylamine (3) Ammonia (4) Ethylamine
Last Answer : Diethylamine
Description : Which of the following statements is NOT correct : (a) Tollens' test is given by both aliphatic and aromatic aldehydes. (b) Fehling's test is given by aliphatic aldehydes. It is not given ... given by methyl ketones and acetaldehydes. (d) Lucas test is given by both aliphatic and aromatic aldehydes
Last Answer : Lucas test is given by both aliphatic and aromatic aldehydes
Description : Methylene blue, from its aqueous solution, is adsorbed on activated charcoal at `25^(@) C`. For this process, the correct statement is
Last Answer : Methylene blue, from its aqueous solution, is adsorbed on activated charcoal at `25^(@) C` ... of temperature. D. The adsorption is irreversible.
Description : The pH value of 12 may be of an aqueous solution of 1. Sodium hydroxide 2. Lithium hydroxide 3. Sodium chloride 4. Hydrogen chloride The correct statements are: (a) 1 and 2 (b) 2 and 4 (c) 3 and 4 (d) 1 and 4
Last Answer : Ans:(a)
Description : Which of the following is correct sequence regarding evolution of reptile :-
Last Answer : Which of the following is correct sequence regarding evolution of reptile :- A. Lizard `to` Crocodile ` ... `to` Tuatara `to` Snake `to` Crocodile
Description : Which of the following statements regarding cash flow patterns (for time periods 0, 1, 2, 3, and 4) is correct? A. The sequence of -Rs.100, Rs.50, Rs.40, Rs.60, and Rs.50 is a non-conventional cash ... -Rs.50, Rs.50, Rs.70, Rs.60, and -Rs.150 potentially has at most two internal rates of return.
Last Answer : B. The sequence of -Rs.100, Rs.600, -Rs.1,100, Rs.600, and Rs.20 potentially has a maximum of two internal rates of return.
Description : Acetyl salicylic acid is soluble in (a) An aqueous base (b) Water (c) An aqueous acid
Last Answer : Ans: A
Description : What is Aliphatic Amin ?
Last Answer : The amine produced when ammonia ( NH 3) to hydrogen ( H) atoms are replaced by aliphatic hydrocarbon radicals such as alkyl radicals is called aliphatic amines .
Description : What is the difference between aliphatic compounds and aromatic compounds ?
Last Answer : aliphatic compounds 1. Aliphatic compounds are mainly free-chain. 2. Aliphatic compounds can be saturated or unsaturated. 3. Aliphatic compounds have low carbon content. 4. Replacement reactions ... compounds. 5. Aromatic halides are relatively less active. . Aromatic hydroxy compounds are acidic.
Description : What is aliphatic hydrocarbon ?
Last Answer : Hydrocarbons without aromatic properties (without circular structure) are called aliphatic hydrocarbons. Such as methane , ethane.
Description : What is aliphatic compound ?
Last Answer : Organic compounds that have free chains of carbon atoms in their molecules are called aliphatic compounds. Such as: CH4, CH3-CH3, CH3-CH2-OH
Description : Assertion : Phenols are more acidic than aliphatic alcohols. Reason : Phenoxides are stabilized by resonance.
Last Answer : Assertion : Phenols are more acidic than aliphatic alcohols. Reason : Phenoxides are stabilized by resonance. ... D. A is incorrect but R is correct
Description : What are aliphatic hydrocarbons?
Last Answer : Aliphatic hydrocarbons are not aromatic compounds.
Description : Xanthoproteic test is positive in proteins containing (A) Sulphur amino acids (B) α-Amino acids (C) Aromatic amino acids (D) Aliphatic amino acids
Last Answer : Answer : C
Description : Secretion of gastrin is evoked by (A) Entry of food into stomach (B) Vagal stimulation (C) Lower aliphatic alcohols (D) All of these
Last Answer : Answer : D
Description : Wax used for making candle is chemically a mixture of – (1) aliphatic hydrocarbons (2) aromatic hydrocarbons (3) cyclic hydrocarbons (4) aliphatic and aromatic hydrocarbons
Last Answer : (1) aliphatic hydrocarbons Explanation: An aliphatic compound is a hydrocarbon compound containing carbon and hydrogen joined together in straight chains, branched trains or non-aromatic rings ... naturally occurring. Waxes are organic compounds that characteristically consist of long alkyl chains.
Description : Aliphatic hydrocarbons are mainly obtained from
Last Answer : petroleum.
Description : Name the homologous series of aliphatic hydrocarbons.
Last Answer : Aliphatic hydrocarbons have three homologous series – Alkanes, Alkenes and Alkynes
Description : How are aliphatic hydrocarbons classified?
Last Answer : Aliphatic hydrocarbons are classified into saturated and unsaturated hydrocarbons.
Description : What are aliphatic or acyclic or open chain hydrocarbons?
Last Answer : The hydrocarbons which consist of straight or branched chains of carbon atoms are called aliphatic or acyclic hydrocarbons.
Description : In low temperature carbonisation (as compared to high temperature carbonisation) of coal (A) Ammonia yield is more (B) Aliphatic tar is produced (C) Free carbon in tar is more (D) All (A), (B) and (C
Last Answer : (B) Aliphatic tar is produced
Description : Coal tar (produced by high temperature carbonisation) is the main source of (A) Aromatic compounds (B) Aliphatic compounds (C) Paraffins (D) Olefins
Last Answer : (A) Aromatic compounds
Description : Which statement about the structure of benzene is not true? (a) The two Kekule structures of benzene are in equilibrium. (b) The carbon-carbon bond lengths in benzene are greater than the carbon- ... (d) The stability of benzene ring is much greater than the stability of 1,3,5- cycloheptatriene
Last Answer : The two Kekule structures of benzene are in equilibrium
Description : Coal-tar is the main source of : (a) Aromatic compounds (b) Aliphatic compounds (c) Heterocyclic compounds (d) None of these
Last Answer : Aromatic compounds
Description : Which of the following amino acids has an aliphatic R group? (a) Serine (b) Cysteine (c) Asparagine (d) Leucine
Last Answer : Leucine
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
Description : Pyrrole is ...... a. nonaromatic b. Aromitic c. Antiaromatic d. Aliphatic
Last Answer : b. Aromitic
Description : Which of the following are saturated aliphatic hydrocarbons? w) alkanes x) alkenes y) alkynes z) nixanes
Last Answer : ANSWER: W -- ALKANES
Description : Which of the following is NOT an aliphatic hydrocarbon? w) n-octane x) propylene y) n-tridecane z) benzene
Last Answer : ANSWER: Z -- BENZENE
Description : Wax used for making candle is chemically a mixture of (1) aliphatic hydrocarbons (2) aromatic hydrocarbons (3) cyclic hydrocarbons (4) aliphatic and aromatic hydrocarbons
Last Answer : aliphatic hydrocarbons
Description : Which of the following sequences regarding acid-strength is correct? (a) HC≡CH > CH3CH2OH > CH3COOH (b) HC≡CH > CH3COOH > CH3CH2OH (c) CH3COOH > HC≡CH > CH3CH2OH (d) CH3COOH > CH3CH2OH > HC≡CH
Last Answer : CH3COOH > CH3CH2OH > HC≡CH
Description : Pick up the correct statement regarding low heat cement from the following: (A) It possesses less compressive strength (B) Its initial setting time is about one hour (C) Its final setting time is about 10 hours (D) All the above
Last Answer : Answer: Option D
Description : Which of the statements give below is correct with respect to frameshift mutation a) a single nucleotide base change, insertion, or deletion of the genetic material b) Glutamine is replaced by valine c) ... or deletions of a number of nucleotides in a DNA sequence that is not divisible by three.
Last Answer : d) insertions or deletions of a number of nucleotides in a DNA sequence that is not divisible by three.
Description : How many amines are possible with the molecular formula `C_(4)H_(11)N` (structural isomers only) :-
Last Answer : How many amines are possible with the molecular formula `C_(4)H_(11)N` (structural isomers only) :- A. 6 B. 7 C. 8 D. 9
Description : n-propylamine containing no secondary and tertiary amines as impurities is prepared by
Last Answer : n-propylamine containing no secondary and tertiary amines as impurities is prepared by A. Hoffmann ... n-propylchloride with ammonia D. none of these
Description : Best method for preparing primary amines from alkyl halides without changing the number of carbon atoms in the chain is
Last Answer : Best method for preparing primary amines from alkyl halides without changing the number of carbon atoms in ... reaction D. Reaction with `NH_(3)`
Description : Of the following reactions, how many reaction, are used for the preparation of amines? (a) `R-C-=N overset(LiAIh_(4))rarr` (b) `R-overset(O)overset(||
Last Answer : Of the following reactions, how many reaction, are used for the preparation of amines? (a) `R-C-=N overset( ... R-CH_(2)-NO_(2) overset(H_(2),Ni)rarr`
Description : Of the following amines how many can give carbyl amine reaction?
Last Answer : Of the following amines how many can give carbyl amine reaction?
Description : Which of the following amines cannot be prepared by path-I?
Last Answer : Which of the following amines cannot be prepared by path-I? A. B. C. D.