94420 + Interview Questions in Chemistry in Class 12 Page 597 InterviewSolution

29801.	The IIUPAC name of C_(17)H_(35)COOH is :
Answer» Heptadecanoic ACID Octadecanoic acid STEARIC acid 2-Methyl hexadecanoic acid. ANSWER :B

Discussion

29802.	The I.E_(1). And the I.E_(2) in kJ mol^(-1) of a few elements designated by P,Q,R,S are shown below: Based on the above information, answer the following questions. Q. Which of the above elements forms a stable binary halide of the formula MX_(2)?
Answer» P Q R S Answer :C

Discussion

29803.	The I.E_(1). And the I.E_(2) in kJ mol^(-1) of a few elements designated by P,Q,R,S are shown below: Based on the above information, answer the following questions. Q. Which represents a noble gas?
Answer» P Q R S Answer :A

Discussion

29804.	The I.E_(1). And the I.E_(2) in kJ mol^(-1) of a few elements designated by P,Q,R,S are shown below: Based on the above information, answer the following questions. Q. Which of the elements is likely to be reactive non-metal?
Answer» P Q R S Answer :D

Discussion

29805.	The I.E_(1). And the I.E_(2) in kJ mol^(-1) of a few elements designated by P,Q,R,S are shown below: Based on the above information, answer the following questions. Q. Which of the element is likely to be reactive metal?
Answer» P Q R S Answer :B

Discussion

29806.	The I.E_(1) among group 13 members follows as
Answer» `BgtAlltGaltTl` `BgtAlgtGAgtTl` `BgtGagtAlgtTl` `BgtGaltAlltTl` Solution :The `IE_(1)` of Ga is more than that of AL because of the SMALL atomic size and greater effective NUCLEAR CHARGE of Ga.

Discussion

29807.	The idea which prompted bartlett to prepare first ever compound of noble gas was:
Answer» High BOND energy of Xe-F Low bond energy of F-F in `F_2` IONISATION engies of `O_2` and xenon were almost similar None of thses Answer :C

Discussion

29808.	The O-O bond length in ozone is:
Answer» Resonance Presence of CARBONYL group Presence of ALKYL group None Answer :A

Discussion

29809.	The value of C-O-C angle in ether molecule is :
Answer» Resonance Presence of CARBONYL group Presence of ALKYL group None Answer :A

Discussion

29810.	The -I effect is shown by:
Answer» -COOH `-CH_3` `-CH_2CH_3` `-CHR_2` ANSWER :A

Discussion

29811.	The +I effect is shown by:
Answer» `-CH_3` -OH -F `-C_6H_5` ANSWER :A

Discussion

29812.	The hypothetical complex triamminediaquachloridocobalt(III) chloride can be represented as:
Answer» `[CoCl(NH_(3))_(3)(H_(2)O_(2))]` `[Co(NH_(3))_(3)(H_(2)O)Cl_(3)]` `[Co(NH_(3))_(3)(H_(2)O)_(2)Cl]Cl_(2)` `[Co(NH_(3))_(3)(H_(2)O)_(3)Cl_(3)]` SOLUTION :N//A

Discussion

29813.	The hypothetical complex chloro-diaquatriamminecobalt (III) chloride can be represented as
Answer» `[COCL(NH_(3))_(3)(H_(2)O)_(2)]Cl_(2)` `[CO(NH_(3))_(3)(H_(2)O)Cl_(3)]` `[Co(NH_(3))_(3)(H_(2)O)_(2)Cl]` `[Co(NH_(3))_(3)(H_(2)O)_(3)]Cl_(3)` Solution :The complexchlorodiaquatriamminecobalt (III) chloride can have the structure `[COCl(NH_(3))_(3)(H_(2)O)_(2)]Cl_(2)`

Discussion

29814.	The hypothetical complex chlorodiaquatriam minecobalt (III) chloride can be presented as
Answer» `[CO(NH_3)_3(H_2O)_2Cl]Cl_2` `[Co(NH_3)_3(H_2O)Cl_3]` `[Co(NH_3)_3(H_2O)_2Cl]` `[Co(NH_3)_3(H_2O)_3]Cl_3` ANSWER :A

Discussion

29815.	The hydroxyl compound that gives a precipitate immediately when treated with concentrated HCl and anhydrous ZnCl_(2) is :
Answer» 3-methyl-2-butanol 3-methyl-1-butanol 1-butanol 2-methyl-2-butanol Solution :`underset(2-"methyl-2-butanol")(Ch_(3)-CH_(2)-underset(OH)underset(\|)OVERSET(CH_(3))overset(\|)C-CH+HCl) overset("ANHYD." ZnCl_(2))to CH_(3)-CH_(2)-underset(Cl)underset(\|)overset(CH_(3))overset(\|)C-CH_(3)` Mechanism of this reaction involves the formation of CARBOCATION and the `3^(@)` carbocation is most stable. In the above reaction `3^(@)` carbocationis formed.Hence, when hydrozyl compound is treated with conc. HCl, the precipitate of 2-chloro-2-methylbutane is formed IMMEDIATELY.

Discussion

29816.	The hydroxide with least ksp value at room temperature is:
Answer» `MG(OH)_2` `CA(OH)_2` `BA(OH)_2` `Be(OH)_2` Answer :D

Discussion

29817.	The hydroxide which is max. soluble in water is ?
Answer» `BA(OH)_2` `Mg(OH)_2` `Sr(OH)_2` `CA(OH)_2` ANSWER :A

Discussion

29818.	The hydroxide of which metal is soluble in excess of ammonia:
Answer» Cr Cu Fe Al Answer :B

Discussion

29819.	The hydrophobic end of lauryl sulphate is
Answer» `C_(17)H_(35)` `C_(17)H_(33)` `C_(12)H_(25)` `-OSO_(3)--` Answer :C

Discussion

29820.	The hydronium ion concentration in 5xx10^(-4) M aqueous solution of NaOH at 25^@C, is :
Answer» zero `5XX10^(-4) M` `2XX10^(-11) M` `2xx10^(3) M` ANSWER :c

Discussion

29821.	The hydrolysisof whichof the followinglakesthe longest time ?
Answer» `CH_(3) COCl` `(CH_(3)CO)_(2)O` `CH_(3)COOC_(2)H_(5)` `CH_(3)CONH_(2)` Answer :D

Discussion

29822.	The hydrolysis of which compound is an example of disproportionating reaction?
Answer» `SCl_(4)` `OF_(2)` `S_(2)Cl_(2)` `S_(2)Cl_(2) and OF_(2)` Answer :C

Discussion

29823.	The hydrolysis of XeF_6is not a redox reaction(R) XeF_6on complete hydrolysis will give XeO_3
Answer» Both (A) and (R) are TRUE and (R) is the correct EXPLANATION of (A) Both (A) and (R) are true and (R) is not the correct explanation of (A) (A) is true but (R) is false Both (A) and (R) are false Answer :B

Discussion

29824.	The hydrolysis of TiCl_(4) in the presenceof HCl gives :
Answer» `TiCl_(2)` `TiO_(2)` `TiOCl_(2)` Ti ANSWER :C

Discussion

29825.	The hydrolysis of the salt of weak acid and strong base is known as:
Answer» ANIONIC hydrolysis Cationic hydrolysis Neutral hydrolysis Acid hydrolysis Answer :A

Discussion

29826.	The hydrolysis of the salt of strong acid and weak base is called:
Answer» INCREASES with concentration decreases with concentration Amphoteric hydrolysis None of these Answer :B

Discussion

29827.	The hydrolysis of sucrose produce a mixture which is
Answer» Laevorotatory Dextrorotatory Equally both (+) and (-)ROTATORY OPTICALLY INACTIVE ANSWER :A

Discussion

29828.	The hydrolysis of the salt of strong acid and weak base is called
Answer» AMPHOTERIC hydrolysis Cationic hydrolysis Anonic hydrolysis None Answer :B

Discussion

29829.	The hydrolysis of starchy foods begins in the mouth by enzymes present in saliva . The enzymes are
Answer» Amylase Protease Ptyalin Maltase Answer :C

Discussion

29830.	The hydrolysis of sodium carbonate involves the reaction betweem:
Answer» `Na^+` and water `Na^+` and `OH^-` `CO_3^(2-)` and water `CO_3^(2-)` and `H^+` Answer :C

Discussion

29831.	The hydrolysis of PCl_3 produces
Answer» `H_(3)PO_(3)+HCLO` `H_(3)PO_(3)+HCl` `H_(3)PO_(4)+HCl` `PH_(3)+HClO` Answer :B

Discussion

29832.	The hydrolysis of PCl_3 produces:
Answer» `H_3PO_3 + HCLO` `H_3PO_3 + HCL` `H_3PO_4 + HCl` `PH_3 + HClO` ANSWER :B

Discussion

29833.	The hydrolysis of optically active 2- bromobutane with aqueous NaOH result in the formation of
Answer» `(pm)` butan - 2- ol `(pm)` butan - 1- ol (-) butan - 2- ol (+) butan - 2- ol Solution :Usually `1^@` carbocation followes second order kinetics and `2^@and 3^@` carbocation follows first order kinetics. The reaction between 2- tromobutonewith equal NaOH follows first order kinetic, i.e.,the rate of reaction depends upon the concentration of 2-brombutane (`S_N 1` MECHANISM). Since, the 2-bromobutane is OPTICALLY active than the produt is a receive mixture. This is because carbocations are as intermadiate in `S_N1` REACTIONS. Since, carbonation being `Sp^2`-HYBRIDIZED is planar species, the attack of the nucleotide on it can occur from both the face with almost case giving a 50 : 50 mixture of two enantiomes.

Discussion

29834.	The hydrolysis of optically active 2-bromobutane with aqueous NaOH results in the formation of:
Answer» (-)butane-2-ol `(+-)`butane-2-ol (+)butane-2-ol `(+-)`butane-1-ol Solution : RACEMIC `(+-)` butan-2-ol is FORMED.

Discussion

29835.	The hydrolysis of NCl_3 by water produces :
Answer» `NH_3 and HOCL` `NH_2NH_2 and HCL` `NH_4 OH and HOCl` `NH_2Cl and HOCl` ANSWER :C

Discussion

29836.	The hydrolysis of NCl_(3) by H_(2)O produces
Answer» `NH_(2)OH and HOCl` `NH_(2)NH_(2) and HCl` `NH_(4)OH + HOCl` `NH_(2)Cl and HOCl` Solution :`NH_(3)` THUS produced combines with `H_(2)O` to FORM `NH_(4)OH`. Thus, the products of hydrolysis are `NH_(4)OH` and HOCl

Discussion

29837.	The hydrolysis of methyl formate in acid solution has rate expression, rete =k [HCOOCH_3][H]^+ the balanced equation being, HCOOCH_3+H_2O to HCOOH +CH_3OH. The rate law contains [H^+] though the balanced equation does not ontain [H^+] because
Answer» of convenience to express the rate law `H^+` ION is a CATALYST `H^+` is an important constituent of any reaction all acids contains `H^+` ions all acids contains `H^+` ions Solution :`H^+` ions acts catalyst in the ester HYDROLYSIS.

Discussion

29838.	The hydrolysis of methyl formate in acid solution has rate expression : rate =k[HCOOCH_3][H^+], the balanced equation being HCOOCH_3 +H_2O to HCOOH +CH_3OH The rate law contains [H^+]though the balanced equation does not contain [H^+] though the balanced equation does not contain [H^+] because
Answer» more for convenience to express the rate law `H^+` ion is a catalyst `H^+` is an important constituent of any reaction all acids contains `H^+` ions Solution :`H^(+)` ions ACT as catalyst for THEGIVEN reaction

Discussion

29839.	The hydrolysis of methyl cyanide in presence of acid gives :
Answer» Methanoic ACID ETHANOIC acid Methylamine Methyl alcohol Answer :B

Discussion

29840.	The hydrolysis of ethyle acetate in dilute aqueous solution in the presence of a mineral acid is represented by the equation : CH_(3) COOC_(2) H_(5)+H_(2)O overset(H^(+))(rarr) CH_(3) COOH+C_(2)H_(5)OH The reaction is :
Answer» trimolecular SECOND order PSEUDO first order ZERO order ANSWER :C

Discussion

29841.	The hydrolysis of ethyl acetate,CH_3COOC_2H_5+H_2Ooverset(H^+)rarrCH_3COOH+C_2H_5OH is:
Answer» FIRST order Second order Third order Zero order Answer :A

Discussion

29842.	The hydrolysis of ethyl acetate, R-COOR^1 + H_2O overset(H^+)to RCOOH+R^1-OH is
Answer» first ORDER second order third order ZERO order Solution :A pseudo UNIMOLECULAR reaction , `R prop [ R COOR'] "" because [H_(2)O]` = constant `THEREFORE ` It is first order reaction

Discussion

29843.	The hydrolysis of ethyl acetat CH_3COOC_2H_5+H_2O overset(H^(+))to CH_3COOH + C_2H_5OH is a reaction of
Answer» FIRST order second order third order ZERO order SOLUTION :The GIVEN reaction is of 1st order .

Discussion

29844.	The hydrolysis of ester to carboxylic acid and alcohol takes place easily in presence of enzyme …………………..
Answer» Esterase Carboxylase LIPASE ALCOHOL dehydrogenase SOLUTION :Lipase

Discussion

29845.	The hydrolysis of ester was carried out separately with 0.05 N HCl and 0.05 N H_2SO_4. Which of the following will be true:
Answer» `K_(HCI)gtK_(H_2SO_4)` `K_(H_2SO_4)gtK_(HCL)` `K_(H_2SO_4)=2K_(HCL)` `K_(H_2SO_4)=K_(HCL)` ANSWER :B

Discussion

29846.	The hydrolysis of ester in the presence of alklai solution is a ………………………………………order reaction
Answer» 1 2 0 3 Answer :B

Discussion

29847.	The hydrolysis of an underline ("alkyl cyanide ")always yields formic acid.
Answer» SOLUTION :The HYDROLYSIS of an alkyl isocyanide alwaysyields FORMIC acid

Discussion

29848.	The hydrolysis of an ester in acid medium is first order reaction. Half life period of a first order reaction is 20 seconds. How much time will it take to complete 90% of the reaction?
Answer» Solution :`k=(0.693)/t_(1/2)=0.693/20=0.3465s^(-1)` If INITIAL CONCENTRATION`[R]_0`=100,[R]=100-90=10 `thereforet=2.303/k LOG ([R]_0)/([R])2.303/0.03465 log 100/10=(2.303xx1)/0.03465=66.46`SECONDS

Discussion

29849.	The hydrolysis of an ester in acid medium is first order reaction. What do you mean by a first order reaction ?
Answer» SOLUTION :If the RATE ofa reaction is proportional to the first power of the concentration of only one rectant,it is CALLED a first order reaction `r=K[A]^1`

Discussion

29850.	Write the relation between half lifet_(1/2)and rate constant (k)of a first order reaction .
Answer» SOLUTION :For a first ORDER reaction,`t_(1/2)=0.693/k`where k is the RATE constant.

Discussion

Explore topic-wise InterviewSolutions in .

The IIUPAC name of C_(17)H_(35)COOH is :

The I.E_(1). And the I.E_(2) in kJ mol^(-1) of a few elements designated by P,Q,R,S are shown below: Based on the above information, answer the following questions. Q. Which of the above elements forms a stable binary halide of the formula MX_(2)?

The I.E_(1). And the I.E_(2) in kJ mol^(-1) of a few elements designated by P,Q,R,S are shown below: Based on the above information, answer the following questions. Q. Which represents a noble gas?

The I.E_(1). And the I.E_(2) in kJ mol^(-1) of a few elements designated by P,Q,R,S are shown below: Based on the above information, answer the following questions. Q. Which of the elements is likely to be reactive non-metal?

The I.E_(1). And the I.E_(2) in kJ mol^(-1) of a few elements designated by P,Q,R,S are shown below: Based on the above information, answer the following questions. Q. Which of the element is likely to be reactive metal?

The I.E_(1) among group 13 members follows as

The idea which prompted bartlett to prepare first ever compound of noble gas was:

The O-O bond length in ozone is:

The value of C-O-C angle in ether molecule is :

The -I effect is shown by:

The +I effect is shown by:

The hypothetical complex triamminediaquachloridocobalt(III) chloride can be represented as:

The hypothetical complex chloro-diaquatriamminecobalt (III) chloride can be represented as

The hypothetical complex chlorodiaquatriam minecobalt (III) chloride can be presented as

The hydroxyl compound that gives a precipitate immediately when treated with concentrated HCl and anhydrous ZnCl_(2) is :

The hydroxide with least ksp value at room temperature is:

The hydroxide which is max. soluble in water is ?

The hydroxide of which metal is soluble in excess of ammonia:

The hydrophobic end of lauryl sulphate is

The hydronium ion concentration in 5xx10^(-4) M aqueous solution of NaOH at 25^@C, is :

The hydrolysisof whichof the followinglakesthe longest time ?

The hydrolysis of which compound is an example of disproportionating reaction?

The hydrolysis of XeF_6is not a redox reaction(R) XeF_6on complete hydrolysis will give XeO_3

The hydrolysis of TiCl_(4) in the presenceof HCl gives :

The hydrolysis of the salt of weak acid and strong base is known as:

The hydrolysis of the salt of strong acid and weak base is called:

The hydrolysis of sucrose produce a mixture which is

The hydrolysis of the salt of strong acid and weak base is called

The hydrolysis of starchy foods begins in the mouth by enzymes present in saliva . The enzymes are

The hydrolysis of sodium carbonate involves the reaction betweem:

The hydrolysis of PCl_3 produces

The hydrolysis of PCl_3 produces:

The hydrolysis of optically active 2- bromobutane with aqueous NaOH result in the formation of

The hydrolysis of optically active 2-bromobutane with aqueous NaOH results in the formation of:

The hydrolysis of NCl_3 by water produces :

The hydrolysis of NCl_(3) by H_(2)O produces

The hydrolysis of methyl formate in acid solution has rate expression, rete =k [HCOOCH_3][H]^+ the balanced equation being, HCOOCH_3+H_2O to HCOOH +CH_3OH. The rate law contains [H^+] though the balanced equation does not ontain [H^+] because

The hydrolysis of methyl formate in acid solution has rate expression : rate =k[HCOOCH_3][H^+], the balanced equation being HCOOCH_3 +H_2O to HCOOH +CH_3OH The rate law contains [H^+]though the balanced equation does not contain [H^+] though the balanced equation does not contain [H^+] because

The hydrolysis of methyl cyanide in presence of acid gives :

The hydrolysis of ethyle acetate in dilute aqueous solution in the presence of a mineral acid is represented by the equation : CH_(3) COOC_(2) H_(5)+H_(2)O overset(H^(+))(rarr) CH_(3) COOH+C_(2)H_(5)OH The reaction is :

The hydrolysis of ethyl acetate,CH_3COOC_2H_5+H_2Ooverset(H^+)rarrCH_3COOH+C_2H_5OH is:

The hydrolysis of ethyl acetate, R-COOR^1 + H_2O overset(H^+)to RCOOH+R^1-OH is

The hydrolysis of ethyl acetat CH_3COOC_2H_5+H_2O overset(H^(+))to CH_3COOH + C_2H_5OH is a reaction of

The hydrolysis of ester to carboxylic acid and alcohol takes place easily in presence of enzyme …………………..

The hydrolysis of ester was carried out separately with 0.05 N HCl and 0.05 N H_2SO_4. Which of the following will be true:

The hydrolysis of ester in the presence of alklai solution is a ………………………………………order reaction

The hydrolysis of an underline ("alkyl cyanide ")always yields formic acid.

The hydrolysis of an ester in acid medium is first order reaction. Half life period of a first order reaction is 20 seconds. How much time will it take to complete 90% of the reaction?

The hydrolysis of an ester in acid medium is first order reaction. What do you mean by a first order reaction ?

Write the relation between half lifet_(1/2)and rate constant (k)of a first order reaction .