94420 + Interview Questions in Chemistry in Class 12

1.	In reaction of alcohols with alkali metal which of the following alcohols will react fastest
Answer» secondary tertiary primary all equal Answer :C

Discussion

2.	In reaction of alcohols with alkali metal, acid etc. which of the following alcohol will react fastest
Answer» Secondary Tertiary primary All equal Solution :Order of REACTIVITY with alkali METAL (e.g. -Sodium) follows the order `1^(@) gt 2^(@) gt 3^(@)`.

Discussion

3.	In reaction N_(2(g))+3H_(2(g))hArr2NH_(3(g)),DeltaH=-93.6kJ, the yield of ammonia does not increase when
Answer» PRESSURE is INCREASED TEMPERATUREE is lowered Pressure is lowered Volume of the reaction vessel is decreased ANSWER :C

Discussion

4.	In reaction of alcohols with alkali metal, acid etc. which of the following alcohol will react fastest ?
Answer» Secondary Tertiary Primary All equal Answer :C

Discussion

5.	In reaction H_2(g) + Cl_2(g) = 2HCl (g) relation between K_p and K_c is _____.
Answer» ANSWER :`K_P`=`K_c`

Discussion

6.	Name the reaction where Lewis acid is used as catalyst for aromatic alkylation.
Answer» ANSWER :FRIEDEL - CRAFT

Discussion

7.	In reaction CaF_(2)+H_(2)SO_(4)rarrCaSO_(4)+2HF 6kg of CaF_(2) are treated with an excess of H_(2)SO_(4) and yield 2.0kg of HF. Percentage yield of reaction is:
Answer» 0.5 0.39 0.65 0.79 Solution :`n_(HF)=0.1` `n_(CaF_(2))"USED"=(0.1)/(2)` `w_(CaF_(2))"used"=3.9kg` `% "yiled"=(3.9)/(6)xx100=65%`

Discussion

8.	In reaction, CO(g) +2H_2(g) hArrCH_3OH(g)DeltaH=-92kJ//mol^(-1) Concentrations of hydrogen, carbon monoxide and methanol become constantat equilibrium . What will happen if (a) volume of the reaction vessel in which reactants and products are contained is suddenly reduced to half ? (b) partial pressure of hydrogen is suddenly doubled ? (c ) an inert gas is added to the system at constant pressure ? (d) the temperature is increased ?
Answer» Solution :For the equilibrium, `CO(g) +2H_2 (g) hArr CH_3 OH(g)` `K_c=([CH_3OH])/([CO][H_2]^2)` `K_p=(P_(CH_3OH))/(P_(CO)xxP_(H_2)^2)` (a) When the volume of the vesselis suddenly reduced to half , the PARTIAL pressures of VARIOUS species gets doubled . Therefore, `Q_p=(2P_(CH_3OH))/(2P_(CO)xx(2P_(H_2))^2)=1/4K_p` SINCE `Q_P` is less than `K_p` , the equilibrium shifts in the forward direction producing more `CH_3OH`. (b) When partial pressure of hydrogen is suddenly doubled, `Q_p` changes and is no longer equal to `K_p`. `Q_p=(2P_(CH_3OH))/(2P_(CO)xx(2P_(H_2))^2)=1/4K_p` Equilibrium will shift from left to RIGHT. When and inert gas is added to the system at constant pressure, equilibrium shift from lower number of moles to higher number of moles(in backward direction). (d) By increasing the temperature, `K_p` will decrease and equilibrium will shift from right to left.

Discussion

9.	In reaction A(g) to B(g) + C(g) if initial pressure fo A(g)is 100 m.m. of Hg half-life of reaction is found to be 10 minute but if initial pressure of A is 200 mm of Hg half-life of reaction is found to be 2.5 minute then what will be order of reaction ?
Answer» ANSWER :3

Discussion

10.	In reaction 8BF_(3)+6LiH overset(Delta) to X+LIBF_(4)
Answer» `B_(4)H_(10)` `B_(2)H_(6)` `BH_(3)` `B_(3)H_(8)` Solution :`8BF_(3)+6LiH overset(DELTA) to B_(2)H_(6)+LIBF_(4)`

Discussion

11.	In reaction C_6H_5CH_3overset"oxidation"to A overset"NaOH"to B overset"sodalime"toC Then C is
Answer» `C_6H_6` `C_6H_5OH` `C_6H_5COOoverset+Na` `C_6H_5ONa` SOLUTION :`C_6H_5CH_3overset"[O]"to underset"[A]"(C_6H_5COOH)OVERSET"NAOH"to underset"[B]"(C_6H_5COONa)overset(NaOH//CaO)to underset"[C]"(C_6H_6)`

Discussion

12.	In Rast method, Camphor is used as a solvent to determine molecular weight of non-volatile solutes because
Answer» It is readily available It is volatile Its molardepression constant is high It is best SOLVENT for ORGANIC substances Answer :C

Discussion

13.	In ramsay - Raylighs second method, the mixture of N_2 and O_2 can be seperated by dissolving in NaOH in the form of
Answer» NITRATES NITRIDES OXIDES AMIDES ANSWER :A

Discussion

14.	In Raschig method, chlorobenzene is converted to phenol by ________
Answer» catalytic OXIDATION catalytic REDUCTION catalytic HYDROLYSIS ACIDIFICATION Answer :C

Discussion

15.	In Ramsay - Ray leight first method, which of the following are used to remove CO_2, O_2 and N_2 respectively
Answer» Soda lime + Potash SOLUTION, red hot Cu & HEATED MG Soda lime, heated Mg& red hot Cu Soda lime, red hot `Cu_2O` & heated Mg Soda lime + Potash soln, red hot CUO & heated Mg Answer :B

Discussion

16.	In Ramsay and Rayleigh's isolation of noble gases from air,the nitrogen of the air is finally converted into
Answer» `NaNO_(2)` only NOand `NO_(2)` `NaNO_(3)` only `NaNO_(2)` and `NaNO_(3)` SOLUTION :NITROGEN is finally converted into `NaNO_(2)` and `NaNO_(3)`,in Ramsay and Rayleigh.s method. `N_(2)O_(2)to2NO` `2NO+O_(2)to2NO_(2)` `2NO_(2)+2NaOHtoNaNO_(2)+NaNO_(3)+H_(2)O`

Discussion

17.	In R-S configuration -C-=N group can be represented as
Answer» `-C=N-C` `-OVERSET(C) overset(\|)(C)=N` ` UNDERSET(N)underset(\|)(C)=N-C` `-underset(N)underset(\|)overset(N)overset(\|)C-underset(C)underset(\|)N-C` ANSWER :D

Discussion

18.	In radioactive decay which one of the following moves the fastest
Answer» `alpha`-particle `beta-`particle `GAMMA`-RAYS Positron Solution :`gamma-`rays are ELECTROMAGNETIC WAVES

Discussion

19.	In R '-O-R, the R' is a higher alkyl group, it is come from
Answer» alkane alcohol both 'a' and 'b' not predicted Answer :A

Discussion

20.	In quick vinegar process of acetic acid, the temperature of mixture is
Answer» 300 K 427 K 500 K 350 K Solution :`2CH_(3)CH_(2)OH+O_(2) underset(300K)OVERSET("ACETOBACTER")tounderset(8-10%" acetiacid (VINEGAR)")(CH_(3)COOH+H_(2)O)`

Discussion

21.	In question no. (23) as given above, what would be the molecularity of elementary reaction [a] and [b] respectively?
Answer» 3,3 2,2 1,1 3,2 Answer :A

Discussion

22.	In Question pH of the final solution will be
Answer» 12 2 `11.7` 3 Solution :`[OVERSET(C-)(O)H]=0.01=10^(-2)` `pOH=2,pH=14-2=12`

Discussion

23.	In question 5 rate of use of H^(+) is x mol L^(-1) S^(-1) than (a) Rate of use of Br^(-1) (b)How much is the average rate of formation of Br_(2)?
Answer» Solution :`(6)/(5)X mol L^(-1) s^(-1)` (B) 2x mol `L^(-1) s^(-1)`

Discussion

24.	In question 266 step(2) can be thought of an/a:
Answer» Neutralisation Electrophilic ATTACK at the CARBONYL carbon Nucleophilic attack of N-lone pair at the carbonyl carbon leading to substitution Nucleophilic addition reaction Answer :C

Discussion

25.	In Question above, the number of ampere hours for which the battery is used containing 1L of the acid is 16.08x ampere hour. Calculate the value of x.
Answer» Solution :From QUESTION above, Decrease in amount of `H_(2)SO_(4)` as batteryyield current `=` Change in molarity `xxMw_(2)xx`VOLUME of ACID in `L` `=(3xx98xx1L)g` Overall change `:` `2F-=2 mol of H_(20SO_(4)` or `1F-=1 mol of H_(2)SO_(4)=98G` `98g H_(2)SO_(4)` requires `=1F` Ampere` //` hour `=(3Fxx96500A-s)/(3600 s h^(-1))` `=80.4 A-h` `:. 16.08x=80.4` `x=(80.4)/(16.08)=5`

Discussion

26.	When methyl amine is treated with NaNO_2 and HCl, the product obtained is―
Answer» `NO_2` `NH_3` `N_2 +H_2O` `RCH_2NO_2` ANSWER :C

Discussion

27.	Which of the mass extinctions are thought to be manmade.
Answer» Neutralisation Electrophilic ATTACK at the carbonyl CARBON Nucleophilic attack of N-lone pair at the carbonyl carbon LEADING to substitution Nucleophilic addition reaction Answer :C

Discussion

28.	Genes involved in cancer are
Answer» `R-CH_2CO_2H` `R-CH_2COONH_4` `R-CH_2CN` `R-CH_2-N=C=O` ANSWER :D

Discussion

29.	In Question 266 step (4) can be carried out with NaNO_2 + dil,HCL,The other products of the step is:
Answer» `NO_2` `NH_3` `N_2 +H_2O` `RCH_2NO_2` ANSWER :C

Discussion

30.	In Question 266 an intermediate involved in step (3) is:
Answer» `R-CH_2CO_2H` `R-CH_2COONH_4` `R-CH_2CN` `R-CH_2-N=C=O` ANSWER :D

Discussion

31.	In qualitative inorganic analysis of basic radicals ydochioric acid is preferred to nitric acid forpreparing a solution of given substance .This is because :
Answer» NITRATES are notdecomposed to selphides NITRIC ACID containnitrogen Hydrocholoric acid is not an oxidesing agent Choride areeasly of converted to sulphides Solution :`HNO_(3)` is as oxidesingugent but `HCI` is not

Discussion

32.	In qualitative inorganic amalysis phosphan , if present is to be elemenated in the apperopriate grest in order to detect the radical :
Answer» `PB^(2+)` `As^(3+)` `Ca^(2+)` `CD^(2+)` SOLUTION :Phosphate interferes in the usual inorganic analysis after group II.

Discussion

33.	In qualitative analysis when H_(2)S is passed through an aqueous solution ofsalt acidified with dil. HCL, a block precipitate is obtainned .On boiling the precipitate with dil. HNO_(3) it forms a solution of blue colour . Addition of excess ofaqueous solution of ammonia to this solution given ....... .
Answer» deep blue precipitate of Cu `(OH)_(2)` deep blue solution of `[Cu(NH_(3))_(4)]^(2+)` deep blue solution of Cu `(NO_(3))_(2)` deep blue solution of Cu `(OH)_(2)`. Cu `(ON_(3))_(2)` Solution :In qualitative analysis when `H_(2)S` is PASSED through an aqueous sloution of salt acidified with DIL . HCl a black ppt. of CuS is obtained . `CuSO_(4)+H_(2)Soverset(dil. HCl)tounderset("blackppt")( CuS +)H_(2)SO_(4)` On boiling CuS with dil. `HNO_(3)` it FORMS a blue coloured solution and the following reactions OCCUR `3CuS+8HNO_(3)to3Cu(NO_(3))_(2)+2NO+3S+4H_(2)O` `S+2HNO_(3)toH_(2)SO_(4)+NO` `2Cu^(2+)+SO_(4)^(2-)+2NH_(3)+2H_(2)OtoCu(OH)_(2)CuSO_(4)+2NH_(4)OH` `Cu(OH)_(2)CuSO_(4)+8NH_(3)tounderset("Tetraammine copper"(\|\|)("Deep blue solution"))(2[Cu(NH_(3))_(4)]SO_(4)+2OH^(-)+SO_(4)^(2-)`

Discussion

34.	In qualitative analysis, when H_2S is passed through an aqueous solution of salt acidified with dil.HCl, a black precipitate is obtained. On boiling the precipitate with dil. HNO_3, it forms a solution of blue colour. Addition of excess of aqueous solution of ammonia to this solution gives
Answer» deep BLUE PRECIPITATE of`Cu(OH)_2` deep blue solution of `[Cu(NH_3)_4]^(2+)` deep blue solution of `Cu(NO_3)_2` deep blue solution of `Cu(OH)_2.Cu(NO_3)_2` Solution :A deep blue solution is formed due to the following REACTIONS : `Cu^(2+) + H_(2)S overset(dil HCl) rarr underset("(Black ppt.)")(CuS) + 2H^(+) , "" CuS + underset("(dil)")(2NHO_3) rarr underset("(Blue solution)")(Cu(NO_3)_2) + H_2S` `Cu(NO_3)_2 + 4NH_3 rarr underset("(Deep blue solution)")([Cu(NH_3)_4]^(2+)) + 2NO_(3)^(-)`

Discussion

35.	In qualitative analysis when H_2S is passed through an aqueous solution of salt acidified with dil. HCl, a black precipitate is obtained. On boiling the precipitate with dil. HNO_3, it forms a solution of blue colour. Addition of excess of aqueous solution of ammonia to this solution gives .............
Answer» Deep blue PRECIPITATE of `CU(OH)_2` Deep blue solution of `[Cu(NH_3)_4]^(2+)` Deep blue solution of `Cu(NO_3)_2` Deep blue solution of `Cu(OH)_2 .Cu(NO_3)_2` Solution :`H_(2)S_(g) + Cu_(aq)^(2+) to CUS + 2H_(aq)^(+)` `underset("dilute")(Cus + 10HNO_(3))to underset("Blue")(Cu(NO_(3))_(2) + 8NO_(2) + 4H_(2)O + H_(2)SO_(4) to NH_(3)(aq) [Cu(NH_(3))_(4)]^(2+)` (Deep blue colour)

Discussion

36.	In qualitative analysis when H_(2)S is passed through an aqueous solution of salt acidified with dil. HCl, a black precipitate is obtained. On boiling the precipitate with dil. HNO_(3), it forms a solution of blue colour. Addition of excess of aqueous solution of ammonia to this solution gives........ .
Answer» deep blue precipitate of `Cu(OH)_(2)` deep blue solution of `[Cu(NH_(3))_(4)]^(2+)` deep blue solution of `Cu(NO_(3))_(2)` deep blue solution of `Cu(OH)_(2).Cu(NO_(3))_(2)` Solution :`underset("Salt")(CuSO_(4))+H_(2)S OVERSET("Dil.HCI")rarr underset(("Black ppt."))(CuS)+H_(2)SO_(4)" ,"" "CuS + 2HNO_(3) rarr underset(("Blue solution"))(Cu(NO_(3))_(2))+H_(2)S` `Cu(NO_(3))_(2) + 4NH_(3) rarr underset(("Deep blue solution"))([Cu(NH_(3))_(4)]^(2+)) + 2NO_(3)^(-)`

Discussion

37.	In qualitative analysis, the metals of Group I can be separated from other ion by precipitating them as chloride salts. A solution initially contains Ag^(+) and Pb^(2+) at a concentration of 0.10 M. Aqueous HCl is added to this solution until the Cl^(-) concentration is 0.10 M. What will the concentrations of Ag^(+) and Pb^(2+) be at equilibrium (K_(sp) for AgCl = 1.8 xx 10^(-10), K_(sp) fr PbCl_(2) = 1.7 xx 10^(-5))
Answer» `[AG^(+)] = 1.8 xx 10^(-9) M, [Pb^(2+)] = 1.7 xx 10^(-3)M` `[Ag^(+)] = 1.8 xx 10^(-11) M, [Pb^(2+)] = 1.7 xx 10^(-4)M` `[Ag^(+)] = 1.8 xx 10^(-7) M, [Pb^(2+)] = 1.7 xx 10^(-6)M` `[Ag^(+)] = 1.8 xx 10^(-11) M, [Pb^(2+)] = 1.7 xx 10^(-5)M` Answer :A

Discussion

38.	In qualitative analysis, in order to detect second group basic radical, HS gas is passed in the presence of dilute HCI to
Answer» increase the dissociation of `H_(2)S` decrease the dissociation of SALT solution decrease the dissociation of `H_(2)S` increase the dissociation of salt solution Solution :The original solution must be FREE from any oxidising agent otherwise`H_(2)S` gets oxidised with precipitation of free sulphur. This is done by heating the mixture with concentrated HC1 for SUFFICIENT time during PREPARATION of original solution.

Discussion

39.	In Q.No. 11, which of the following reagents can be used to convert (A) to (B)?
Answer» <P>a.Conc. `H_(2)SO_(4)` at `413 K (140^(@)C)` b.`DC C` c.`P_(2)O_(5)` d.Conc. `H_(2)SO_(4)` at `383 K (110^(@)C)` Solution :Alcohols are DEHYDRATED to ALKENE with concentrated `H_(2)SO_(4)` at `160-170^(@)C`. At `10^(@)C`, ether is formed. Both `DC C` (dicyclo hexyl and `P_(2)O_(5)` can be used for the dehydration of alcohols to alkene. So the answers are `(b)` and `(c )`.

Discussion

40.	In pyrophosphoric acid the number of hydroxy groups present are:
Answer» 4 3 5 7 Answer :A

Discussion

41.	In pyranose of glucose oxide (ether) linkage is formed between
Answer» `C_1` and `C_6` `C_2 and C_6` `C_1 and C_5` `C_2 and C_3` ANSWER :C

Discussion

42.	In purine nucleoside, C-1 of sugar from glycosidic linkage with which position of purine
Answer» 1 2 9 8 Answer :C

Discussion

43.	In Pt(C_(2)H_(4))_(2)""(C_(2)F_(4)) molecule, in which the platinum and all six carbon atoms are almost coplanar, choose the correct statement(s).
Answer» C-C distance is greater in `C_(2)F_(4)" than "C_(2)H_(4)` `Pt-C(of C_(2)H_(4))` distance is greater than `Pt-C(ofC_(2)F_(4))` If `C_(2)H_(4)` is REPLACED by `C_(2)(CN)_(4)` in the complex, then C-C distance is greater in `C_(2)(CN)_(4)` than `C_(2)F_(4)`. (double BOND length) In case of `underline(C)(CN)_(4)` in the complex, above, the UNDERLINED C-hybridisationis `underset(n to 3)lim sp^(n)`. Solution :.`C_(2)F_(4)` has greater acceptance of electron into `pi^()` than `C_(4)H_(4)`.Hence,C-C B.L. of `C_(2)H_(4)uarr`. .Due to synergic bonding M-C bond (of `C_(4)F_(4)`) becomes stronger. . `C_(2)(CN)_(4)` also has synergic bonding. Due to back donation from metal to `pi^()`orbital ,C=C approaches c-c behaviour `(sp^(3))`

Discussion

44.	In [Pt(NH_(3))_(2)Cl_(2)], pt-Cl bond length is 2 Å and Cl-Cl distance is 2.88 Å then the compound is:
Answer» tetrahedral square pyramidal cis-square planar trans-square planar Answer :C

Discussion

45.	In public urinals, we observe some pungent smell. This smell is due to :
Answer» HYDROLYSIS of urea of urine by urease of atmosphere into `NH_3` and `CO_2` Formation of sulphamic ACID by urea of urine. Reaction of `CO_2` of atmosphere with urea MONONITRATE in urine Hydrogen present in air reacts with NITROGEN forming `NH_3` Answer :A

Discussion

46.	In proteins , the alpha - amino acids are linked by …………...........
Answer» Amide LINKAGE Phosphodiester linkage Glycosidic linkage CARBOXYL linkage SOLUTION :Amide linkage

Discussion

47.	In proteins, the amino acids are linked covalently by ……….. .
Answer» SOLUTION :PEPTIDE BONDS

Discussion

48.	In pseudo - order reactions
Answer» The actual order of reaction is different from that expected using rate law expression The CONCENTRATION at LEAST one reactant is taken in large excess. The concentration of reactant taken in excess MAY be taken as CONSTANT All of these Answer :D

Discussion

49.	In problem 8 as mentioned above the wavelength of light emitted in the visibleregion by He^(+)ions after collisions with H atoms is
Answer» `6.5 xx10^(-7)` m `5.6 xx10^(-7)` m `4.8 xx10^(-7)` m `4.0 XX 10^(-7)` m ANSWER :C

Discussion

50.	In previous problem calculate DeltaS_("gas") if process is carried out at constant volume:
Answer» `5R In 2` `(3)/(2) R In 2` `3R In 2` `-3R In 2` SOLUTION :N//A

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

In reaction of alcohols with alkali metal which of the following alcohols will react fastest

In reaction of alcohols with alkali metal, acid etc. which of the following alcohol will react fastest

In reaction N_(2(g))+3H_(2(g))hArr2NH_(3(g)),DeltaH=-93.6kJ, the yield of ammonia does not increase when

In reaction of alcohols with alkali metal, acid etc. which of the following alcohol will react fastest ?

In reaction H_2(g) + Cl_2(g) = 2HCl (g) relation between K_p and K_c is _____.

Name the reaction where Lewis acid is used as catalyst for aromatic alkylation.

In reaction CaF_(2)+H_(2)SO_(4)rarrCaSO_(4)+2HF 6kg of CaF_(2) are treated with an excess of H_(2)SO_(4) and yield 2.0kg of HF. Percentage yield of reaction is:

In reaction A(g) to B(g) + C(g) if initial pressure fo A(g)is 100 m.m. of Hg half-life of reaction is found to be 10 minute but if initial pressure of A is 200 mm of Hg half-life of reaction is found to be 2.5 minute then what will be order of reaction ?

In reaction 8BF_(3)+6LiH overset(Delta) to X+LIBF_(4)

In reaction C_6H_5CH_3overset"oxidation"to A overset"NaOH"to B overset"sodalime"toC Then C is

In Rast method, Camphor is used as a solvent to determine molecular weight of non-volatile solutes because

In ramsay - Raylighs second method, the mixture of N_2 and O_2 can be seperated by dissolving in NaOH in the form of

In Raschig method, chlorobenzene is converted to phenol by ________

In Ramsay - Ray leight first method, which of the following are used to remove CO_2, O_2 and N_2 respectively

In Ramsay and Rayleigh's isolation of noble gases from air,the nitrogen of the air is finally converted into

In R-S configuration -C-=N group can be represented as

In radioactive decay which one of the following moves the fastest

In R '-O-R, the R' is a higher alkyl group, it is come from

In quick vinegar process of acetic acid, the temperature of mixture is

In question no. (23) as given above, what would be the molecularity of elementary reaction [a] and [b] respectively?

In Question pH of the final solution will be

In question 5 rate of use of H^(+) is x mol L^(-1) S^(-1) than (a) Rate of use of Br^(-1) (b)How much is the average rate of formation of Br_(2)?

In question 266 step(2) can be thought of an/a:

In Question above, the number of ampere hours for which the battery is used containing 1L of the acid is 16.08x ampere hour. Calculate the value of x.

When methyl amine is treated with NaNO_2 and HCl, the product obtained is―

Which of the mass extinctions are thought to be manmade.

Genes involved in cancer are

In Question 266 step (4) can be carried out with NaNO_2 + dil,HCL,The other products of the step is:

In Question 266 an intermediate involved in step (3) is:

In qualitative inorganic analysis of basic radicals ydochioric acid is preferred to nitric acid forpreparing a solution of given substance .This is because :

In qualitative inorganic amalysis phosphan , if present is to be elemenated in the apperopriate grest in order to detect the radical :

In qualitative analysis, when H_2S is passed through an aqueous solution of salt acidified with dil.HCl, a black precipitate is obtained. On boiling the precipitate with dil. HNO_3, it forms a solution of blue colour. Addition of excess of aqueous solution of ammonia to this solution gives

In qualitative analysis, in order to detect second group basic radical, HS gas is passed in the presence of dilute HCI to

In Q.No. 11, which of the following reagents can be used to convert (A) to (B)?

In pyrophosphoric acid the number of hydroxy groups present are:

In pyranose of glucose oxide (ether) linkage is formed between

In purine nucleoside, C-1 of sugar from glycosidic linkage with which position of purine

In Pt(C_(2)H_(4))_(2)""(C_(2)F_(4)) molecule, in which the platinum and all six carbon atoms are almost coplanar, choose the correct statement(s).

In [Pt(NH_(3))_(2)Cl_(2)], pt-Cl bond length is 2 Å and Cl-Cl distance is 2.88 Å then the compound is:

In public urinals, we observe some pungent smell. This smell is due to :

In proteins , the alpha - amino acids are linked by …………...........

In proteins, the amino acids are linked covalently by ……….. .

In pseudo - order reactions

In problem 8 as mentioned above the wavelength of light emitted in the visibleregion by He^(+)ions after collisions with H atoms is

In previous problem calculate DeltaS_("gas") if process is carried out at constant volume: