94420 + Interview Questions in Chemistry in Class 12 Page 541 InterviewSolution

27001.	The number of isomers for the compound with molecular formula C_(2)BrCIFI is:
Answer» 3 4 5 6 Answer :D

Discussion

27002.	The number of isomers exhibited by [Cr(NH_(3))_(3)Cl_(3)] is :
Answer» 2 3 4 5 Answer :A

Discussion

27003.	The only cations present in a slightly acidic solution are Fe^(3+), Zn^(2+) and Cu^(2+) The reagent that when added in excess to this solution would identify and separate Fe^(3+) in one step is
Answer» `2M HCI` `6 M NH_(3)` `6 M NAOH` `H_(2) S gas` Answer :B

Discussion

27004.	The number of isomeric xylenes is:
Answer» 3 2 4 5 Answer :A

Discussion

27005.	The only cations present in slightly acidic solutions are Fe^(3+),Zn^(2+) and Cu^(2+). The reagent that when added in excess to this solution would identify and separate Feo in one step is
Answer» 2M HCl `6M NH_(3)` 6M NaOH `H_(2)S` Solution :`NH_(3)` FORMS soluble COMPLEX with `ZN^(2+)` and `Cu^(2+)`m leaving `Fe^(2+)`. Hence, (B) is the correct answer

Discussion

27006.	The number of isomeric structure for C_3H_9N would be:
Answer» 4 3 2 1 Answer :C

Discussion

27007.	The number of isomeric pentyl alcohols possible is
Answer» Two Four Six Eight Solution :Draw all possible isomers having all single bonds in them and count their total number. (i) `CH_(3)CH_(2)CH_(2)CH_(2)CH_(2)OH` (ii) `{:(CH_(3)CH_(2)CH_(2)CH_(2)CH_(3)),("\|"),(""OH):}` (iii) `{:(CH_(3)CH_(2)CH-CH_(2)CH_(3)),("\|"),(""OH):}` (IV) `{:(CH_(3)CH_(2)CH-CH_(2)OH),("\|"),(""CH_(3)):}`(V) `{:(""OH),("\|"),(CH_(3)CH_(2)C-CH_(3)),("\|"),(""CH_(3)):}` (vi) `{:(""CH_(2)OH),("\|"),(CH_(3)CH_(2)CH-CH_(3)):}`(vii) `{:(""CH_(3) ),("\|"),(CH_(3)-C-CH_(2)OH),("\|"),(""CH_(3)):}` (viii) `{:(""CH_(2)-OH),("\|"),(CH_(3)-C-CH_(3)),("\|"),(""CH_(3)):}`

Discussion

27008.	The only cations present in a slightly acidic solution are Fe^(3+),Zn^(2+) and Cu^(2+) . The reagent that when added in excess to this solution would identify and separate Fe^(3+) in one step is
Answer» 2 M HCl `6M NH_(3)` `6M NaOH` `H_(2)S` gas Answer :D

Discussion

27009.	The number of isomeric pentyl alchohols possible are:
Answer» TWO four six eight Solution :SEE ART. 9.4 PROBLEM 2

Discussion

27010.	Which of the following is a tetrabasic acid?
Answer» ORTHO phosphorus ACID Ortho phosphoric acid Meta phosphoric acid PYRO phosphoric acid Answer :D

Discussion

27011.	The number of isomeric ketones with formula C_(6)H_(12)O is
Answer» SIX TWO FIVE FOUR ANSWER :A

Discussion

27012.	The number of isomeric forms in which [Co(NH_3)_4Cl_2]^+ion can occur is :
Answer» 2 3 4 1 Answer :A

Discussion

27013.	The one which has the highest value of pH is
Answer» Distilled WATER `NH_(3)` SOLUTION in water `NH_(3)` Water saturated with `Cl_(2)` Solution :In water SOLUTIONS. `NH_(3) + H_(2)O hArr NH_(4)^(+) + OH^(-)` Concentration of `OH^(-)` is increased so that solution become more basic and the pH is increased.

Discussion

27014.	The one which is least basic is
Answer» `NH_3` `C_6H_5NH_2` `(C_6H_5)_3N` (C_6H_5)_2NH` ANSWER :C

Discussion

27015.	The number of isomeric compounds of the formula C_(7)H_(7)Br is :
Answer» Three Four Five Six Solution :

Discussion

27016.	The one which has lowest ox. No. of Hg?
Answer» `HG(NO_2)_2` `HgCl_2` `Hg(NO_3)_2` Hg_2Cl_2 Answer :D

Discussion

27017.	The number of isomeric carboxylic acids posible for C_(4)H_(9)COOHare :
Answer» Four Five Three Six. Solution :`CH_(3)CH_(2)CH_(2)CH_(2)COOH , "" (CH_(3))_(2)CHCH_(2)COOH, "" CH_(3)CH_(2)CH(CH_(3))COOH,(CH_(3))_(3)C COOH`

Discussion

27018.	The one which has least iodine value is?
Answer» GINGER OIL Ghee Groundnut oil SUNFLOWER oil ANSWER :B

Discussion

27019.	The one which has least iodine value is
Answer» ginger OIL ghee groundnut oil sunflower oil Solution :The degree of unsaturation of a fat or oil is measured by its iodine number which is defined as the number of GRAMS of iodine what would add to carbon carbon double BONDS (C=C) present in 100 grams of the far or oil. Hence, greater the number of doubel bonds in the acid residues of a trglyceride, greatger will be the iodine number. Because a satuaratedfatty acid has no double bonds, it takes up no iodine, this its iodine number is zero. Among the given options, ghee has the least iodine value as it is SATURATED whereas the other compounds conain some degree of unsaturation.

Discussion

27020.	The number of isomeric alkyl bromides of molecular formula C_(4)H_(9)Br is :
Answer» Four <BR>Five Three Six Solution :(i) `CH_(3)CH_(2)CH_(2)CH_(2)Br` (ii) `CH_(3)CH_(2)UNDERSET(Br)underset(\|)(C)HCH_(3)` (iii) `CH_(3)-underset(CH_(3))underset(\|)OVERSET(CH_(3))overset(\|)(C)-Br` (iv) `CH_(3)underset(CH_(3))underset("\|")(CHCH_(2)Br)`

Discussion

27021.	The one which decreases with dilution is
Answer» conductance(G) specific conductance( K ) EQUIVALENT conductance `wedge_(eq)` molar conductance `wedge_(m)` ANSWER :C

Discussion

27022.	The one which decreases with dilution is ………… .
Answer» CONDUCTANCE specific conductance EQUIVALENT conductance molar conductance ANSWER :B

Discussion

27023.	The one that is synthesized in skin is
Answer» VITAMIN K Vitamin C Vitamin D Vitamin E Answer :C

Discussion

27024.	The number of isomeric alcohols of formula C_4H_(10)O is:
Answer» 2 4 7 8 Answer :B

Discussion

27025.	The one that is familiar as ascorbic acid is
Answer» VITAMINE A Vitamine B Vitarnine C Vitamine E Answer :C

Discussion

27026.	The number of isomeres possible for the octahedral complex [CoCl_(2)(en)(NH_(3))_(2)]^(+) is
Answer» TWO three no ISOMER FOUR isomers Solution :

Discussion

27027.	The one that is a good conductor of electricity in the folowing list of solids is :
Answer» SODIUM chloride Graphite Diamond Sodium carbonate Answer :B

Discussion

27028.	Thenumberof isomer(includingstereoisomers) of C_(5)H_(12)O whichcan givepositivehaloformtestis
Answer» SOLUTION :NA

Discussion

27029.	The one of the rarest element of group 18 is
Answer» He Ar Ne Xe Answer :D

Discussion

27030.	The one of the product formed in the reaction is (AAK_MCP_35_NEET_CHE_E35_005_Q01)
Answer» SUBSTITUTED haloarene Aromatic hydrocarbon Organometallic compound Substituted haloalkane Answer :B

Discussion

27031.	The number of ions present in K_(3)[Fe(CN)_(6)] are:
Answer» 10 4 3 2 Answer :B

Discussion

27032.	The one letter code for the amino acid tryptophan is
Answer» G V W H Solution :One letter CODE for TRYTOPHAN is 'W'.

Discussion

27033.	The one electron species having ionisation energy of 54.4 eV is
Answer» `H` `He^(+)` `B^(4+)` `Li^(2+)` SOLUTION :Ionisation energy = `(13.6Z^(2))/(n^(2))eV=13.6Z^(2)` for ONE electron species. `therefore13.6Z^(2)=54.4` or, `Z^(2)=4` or `Z=2` i.e., `He^(+)`.

Discussion

27034.	Number of ions present in 2.0 "litre" of a solution of 0.8 M K_(4)Fe(CN)_(6) is:
Answer» `4.8xx10^(23)` `4.8xx10^(24)` `9.6xx10^(24)` `9.6xx10^(22)` Solution :Moles of `K_(4)[Fe(CN)_(6)]` present in 2 L of solution `=(2 L) xx (0.8 mol L^(-1))=1.6` mol `K_(4)[Fe(CN)_(6)]hArr4K^(+)+[Fe(CN)_(6)]^(-)` No. of ions = 5 TOTAL ions present = `1.6xx5xxN_(0)` `=1.6 mol xx 5xx 6.022 xx 10^(23) mol^(-1)` `=4.8xx10^(24)`

Discussion

27035.	The olefin which on ozonolysis gives CH_3CH_2CHO and CH_3CHO is
Answer» 1-butene 2-butene 1-pentene 2-pentene Solution :`CH_3CH_2CH=CHCH_3 UNDERSET(Zn//H_2O)OVERSET(O_3)to underset"PROPANAL"(CH_3CH_2CHO)+underset"ETHANAL"(CHOCH_3)`

Discussion

27036.	The number of ions per mole of the complex CoCl_(3).5NH_(3) in aqueous solution will be :
Answer» 3 9 2 4 Answer :A

Discussion

27037.	The olefin which on ozonalysis gives CH_3CH_2 CHO and CH_3 CHO is
Answer» 2-pentene 2-butene 1-pentene 1-butene Answer :A

Discussion

27038.	The number of ions given by[Pt(NH_3)_2Cl_4]in aqueous solution is :
Answer» Zero 1 2 4 Answer :A

Discussion

27039.	The oil used in the froth floatation method for the purification of ores is :
Answer» COCONUT OIL KEROSENE oil MUSTARD oil PINE oil Answer :D

Discussion

27040.	The number of ions given by K[Pt(NH_3)Cl_5] in aqueous solution is :
Answer» 2 3 4 1 Answer :A

Discussion

27041.	The OH^- ion concentration of a weak base is :
Answer» C .`K_b` SQRT(C . K_b) sqrt(K_b/C) sqrt(K_b) ANSWER :B

Discussion

27042.	The [OH^-] in 100.0mL of 0.016 M-HCl(aq) is :
Answer» `5xx10^12 M` `3xx10^(-10) M` `6.25xx10^(-13) M` `2.0xx10^(-9) M` Answer :C

Discussion

27043.	The number' of ions -given by K[Pt(NH_3)Cl_5] in aqueous solution is :
Answer» 2 3 4 1 Answer :A

Discussion

27044.	The -OH group of methyl alcohol cannot be replaced by chlorine by the action of
Answer» chlorine hydrogen chioride PHOSPHORUS -TRICHLORIDE phosphorus pentachloride Answer :A

Discussion

27045.	The number of ions given by K_2PtCl_6 in aqueous solution is:、
Answer» 2 3 4 Zero Answer :B

Discussion

27046.	The - Oh group of an alcohol or COOH group of a carboxylic acid can be replaced by using:
Answer» HYPOCHLOROUS acid chlorine hydrochloric acid phosphorus pentachloride. Answer :B

Discussion

27047.	The number of ions given by [Co(NH_3)_4]C1_3 in aqueous solution is:
Answer» 2 3 1 4 Answer :D

Discussion

27048.	The -OHgroup of methyl alcohol cannot be replaced by chlorine by the action of :
Answer» Chlorine HCI `PCI_3` `PCI_5` ANSWER :A

Discussion

27049.	The odd decomposition of carbon chlorine bond form
Answer» Two FREE ions two-carbonium ion Two carbanion A cation and an anion Solution :`R-CH_(2)-Cl overset("Heterolytic bond fission")tounderset("cation")(RCH_(2)^(o+))+underset("anion")(Cl^(ө))` Cl is more ELECTRONEGATIVE than `C` by which it form anion and hydrocarbon form cation.

Discussion

27050.	The number of ions given by[CO(NH_(3))_(3)Cl_(3)] in aqueous solution is
Answer» 1 2 3 zero Answer :D

Discussion

Explore topic-wise InterviewSolutions in .

The number of isomers for the compound with molecular formula C_(2)BrCIFI is:

The number of isomers exhibited by [Cr(NH_(3))_(3)Cl_(3)] is :

The only cations present in a slightly acidic solution are Fe^(3+), Zn^(2+) and Cu^(2+) The reagent that when added in excess to this solution would identify and separate Fe^(3+) in one step is

The number of isomeric xylenes is:

The only cations present in slightly acidic solutions are Fe^(3+),Zn^(2+) and Cu^(2+). The reagent that when added in excess to this solution would identify and separate Feo in one step is

The number of isomeric structure for C_3H_9N would be:

The number of isomeric pentyl alcohols possible is

The only cations present in a slightly acidic solution are Fe^(3+),Zn^(2+) and Cu^(2+) . The reagent that when added in excess to this solution would identify and separate Fe^(3+) in one step is

The number of isomeric pentyl alchohols possible are:

Which of the following is a tetrabasic acid?

The number of isomeric ketones with formula C_(6)H_(12)O is

The number of isomeric forms in which [Co(NH_3)_4Cl_2]^+ion can occur is :

The one which has the highest value of pH is

The one which is least basic is

The number of isomeric compounds of the formula C_(7)H_(7)Br is :

The one which has lowest ox. No. of Hg?

The number of isomeric carboxylic acids posible for C_(4)H_(9)COOHare :

The one which has least iodine value is?

The one which has least iodine value is

The number of isomeric alkyl bromides of molecular formula C_(4)H_(9)Br is :

The one which decreases with dilution is

The one which decreases with dilution is ………… .

The one that is synthesized in skin is

The number of isomeric alcohols of formula C_4H_(10)O is:

The one that is familiar as ascorbic acid is

The number of isomeres possible for the octahedral complex [CoCl_(2)(en)(NH_(3))_(2)]^(+) is

The one that is a good conductor of electricity in the folowing list of solids is :

Thenumberof isomer(includingstereoisomers) of C_(5)H_(12)O whichcan givepositivehaloformtestis

The one of the rarest element of group 18 is

The one of the product formed in the reaction is (AAK_MCP_35_NEET_CHE_E35_005_Q01)

The number of ions present in K_(3)[Fe(CN)_(6)] are:

The one letter code for the amino acid tryptophan is

The one electron species having ionisation energy of 54.4 eV is

Number of ions present in 2.0 "litre" of a solution of 0.8 M K_(4)Fe(CN)_(6) is:

The olefin which on ozonolysis gives CH_3CH_2CHO and CH_3CHO is

The number of ions per mole of the complex CoCl_(3).5NH_(3) in aqueous solution will be :

The olefin which on ozonalysis gives CH_3CH_2 CHO and CH_3 CHO is

The number of ions given by[Pt(NH_3)_2Cl_4]in aqueous solution is :

The oil used in the froth floatation method for the purification of ores is :

The number of ions given by K[Pt(NH_3)Cl_5] in aqueous solution is :

The OH^- ion concentration of a weak base is :

The [OH^-] in 100.0mL of 0.016 M-HCl(aq) is :

The number' of ions -given by K[Pt(NH_3)Cl_5] in aqueous solution is :

The -OH group of methyl alcohol cannot be replaced by chlorine by the action of

The number of ions given by K_2PtCl_6 in aqueous solution is:、

The - Oh group of an alcohol or COOH group of a carboxylic acid can be replaced by using:

The number of ions given by [Co(NH_3)_4]C1_3 in aqueous solution is:

The -OHgroup of methyl alcohol cannot be replaced by chlorine by the action of :

The odd decomposition of carbon chlorine bond form

The number of ions given by[CO(NH_(3))_(3)Cl_(3)] in aqueous solution is