94420 + Interview Questions in Chemistry in Class 12

1.	How many grams of NaOH must be present in one litre of the solution of give it a pH = 12?
Answer» 0.20 g/lit 0.4 g/lit 4 g/lit 0,10 g/lit Answer :B

Discussion

2.	How many grams of NaOH are equivalent to 100 ml of 0.1 N oxalic acid
Answer» 0.2 2 0.4 4 Solution :`N=(W_(B)xx1000)/("EQ. WT."xxV),W_(B)=(Nxx"Eq. wt"xxV)/(1000)` `=(0.1xx40xx100)/(1000)=0.4`

Discussion

3.	How many grams of NaBr must be added to 270g of water to lower the vapour pressure by 3.125mm Hg at which vapour pressure of water is 50mm Hg (Na=23,Br=80) ? Assume 100% ionisation of NaBr.
Answer» <P> SOLUTION :`NaBrhArrNa^(+)+Br^(-)` van'tHoff FACTOR `i=2` let moles of `NaBr=2n_(1)` mole of `H_(2)O(mn_(2))=(270)/(18)=15` `(DeltaP)/(P_("solvent")=X_("solute")=(n_(1)i)/(n_(1)i+n_(2))` `(3.125)/(50)=(2n_(1))/(2n_(1)+15)` `(2n_(1)+15)/(2n_(1))=(50)/(3.125)=16` `1+(15)/(2n_(1))=16` `(15)/(2n_(1))=15` `n_(1)=0.5` `therefore NaBr` taken `=0.5` mol `=0.5xx103=51.5g`.

Discussion

4.	How many grams of NaCl can be added to 785 mL of 0.0015 M AgNO_3before a precipitate forms? K_(sp) (AgCl) = 1.8 xx 10^(-10) .
Answer» SOLUTION :`5.5 XX 10^(-6) G`

Discussion

5.	How many grams of Na_(2)CO_(3) should be dissolved in 250 g of water to prepare 0.1 m solution?
Answer» Solution :`"0.1 m solution MEANS 0.1 mole of "Na_(2)CO_(3)" is present in 1000 g of WATER"` `therefore " 250 g of water should contain "Na_(2)CO_(3)=(0.1)/(4)"Mole = 0.025 mole "=0.025xx106 g = 2.65 g`

Discussion

6.	How many grams of methyl alcohol should be added to I 0 litre tank of water to prevent its freezing at 268 K ? (K _(f) for water is 1.86 K k g mol ^(-1))
Answer» `880.07g` `899.04g` `886.02g` `868.06g` Solution :`DELTA T _(f ) = K _(f ) m` where m = molality `273 -268 =1.86 xx(W)/( M X v)` ` 5=1 .86 xx(w)/( 32xx10)` `w= ( 5xx32xx10)/(1.86)` `= 560.2 ~~ 868 .06g`

Discussion

7.	How many grams of KCI should be added to 1.0 kg of water to lower its freezing point to -8^(@)C. Calculate the degree of molality of BaCI_(2) in this solution. (K_(b) "for water "=0.52 K m^(-1))
Answer» Solution :In solution, KCI dissociates as : `KCIoverset(("AQ"))toK^(+)CI^(-)("aq")therefore" Van't Hoff factpr"(i)=2` `DeltaT_(f)=0^(@)C-(-08^(@)C)=8^(@)C=8C=8K, *K, K_(f)=1.86" K KG mole"^(-1)` `DeltaT_(f)=ixxK_(f)xxm or m=(DeltaT_(f))/(ixxK_(f))` `m=((8K))/(2xx(1.86"K kg mol"^(-1)))=2.15" mol kg"^(-1)=2.15m` `therefore"Mass of KCI in grams = (2.15 mol)XX(74.5" g mole "^(-1))=162.2 g.`

Discussion

8.	How many grams of ice at 0^(@)C can be melted by the addition of 500 J of heat (The molar heat of fusion for ice is 6.02 kJmol^(-1))
Answer» 0.0831 G 1.50 g 3.01 g 12.0 g Answer :B

Discussion

9.	Solubility product of silver bromide is 5.0xx10^(-13). The quantity of potassium bromide (molar mass taken as 120 g mol^(-1)) to be added to 1 litre of 0.05 M solution of silver nitrate to start the precipitation of AgBr is :
Answer» `2.5xx10^(-14)g` `1.2xx10^(-9)g` `1.2xx10^(-11)g` `2.5xx10^(-9)g` ANSWER :B

Discussion

10.	How many grams of I_2 are present in a solution which require 40 ml of 0.11 N Na_2 S_2 O_3 to react with it ? S_2 O_3^(2-) + I_2 to S_4 O_6^(2-) + 2I^(-)
Answer» 12.7 G 25.4 g 0.558 g 4.25 g Answer :C

Discussion

11.	How many grams of H_2SO_4 are present in o.25 mole of H_2SO_4.
Answer» 2.45 24.5 0.245 0.25 Answer :B

Discussion

12.	How many grams of gas would be adsorbed per gram of a substance at 8 atm by assuming Freundlich adsorption isotherm. (x)/(m) = kp^(1//m)"" and "" k = 10^(-2)atm^(-1//3)"" & "" n = 3.
Answer» SOLUTION :`0.02 G`

Discussion

13.	How many grams of H_(2) and O_(2) are produced during the electrolysis of water under a 1.30 amp of current for 5 hours ? What volumes of dry gases are produced at NTP ?
Answer» SOLUTION :`{{:(H_(2)-0.245 G, O_(2)-1.94 g),(H_(2)-2.72 L, O_(2) - 1.36 L):}}`

Discussion

14.	How many grams of copper will be replaced in 2L of a 1.50 M CuSO_(4) solution if the latter is made to react with 27.0 of aluminium (Cu=63.5, AI= 27.0)
Answer» `190.50g` `95.25g` `31.75g` `10.65g` SOLUTION :2 L of 1.5 M `CuSO_(4)=3` MOL of `CuSO_(4)` `underset("2 mol")(2Al)+underset("3 mol")(3CuSO_(4))to Al_(2)(SO_(4))_(3)+underset("3 mol")(3 CU)` 2 mol of Al = 3 mol of Cu (27g = 1 mol of Al) `=(3)/(2)xx6.3g` of Cu = 95.25 g

Discussion

15.	How many grams of concentrated nitric acid solution should be used to prepare250 mL of 2.0M HNO_(3) ? The concentrated acid is 70% HNO_(3)
Answer» `90.0` G conc. `HNO_(3)` `70.0` g conc. `HNO_(3)` `54.0` g conc. `HNO_(3)` `45.0` g conc. `HNO_(3)` SOLUTION :Molarity `(M) =(wt xx 1000)/( " mol . Wt x col (ml))` `2= (wt)/(63) GM` wt. of `70%` acid `=(100)/( 70) xx 31.5 =45` gm

Discussion

16.	How many grams of concentrated nitric acid solution should be used to prepare 250 mL of "2.0 M HNO"_(3) ? The concentrated nitric acid is 70%HNO_(3)
Answer» `"45.0 G conc HNO"_(3)` `"90.0 g conc HNO"_(3)` `"70.0 g conc HNO"_(3)` `"54.0 g conc HNO"_(3)` SOLUTION :250 ML of 2.0 M `HNO_(3)` will contain `HNO_(3)` `=(2)/(1000)xx250=?0.5 MOL "=0.5xx63 g = 31.5g` As concentrated `HNO_(3)` is `70%` , therefore, concentrated `HNO_(3)` required `=(100)/(70)xx31.5g=45g`

Discussion

17.	How many grams of concentrated nitric acid solution should be used to prepare 250 mL of 2.0 M HNO_(3) ? The concentrated acid is 70% HNO_(3) .
Answer» 90.0 g conc. `HNO_(3)` 70.0 g conc. `HNO_(3)` 54.0 g conc. `NHO_(3)` 45.0 g conc. `HNO_(3)` SOLUTION :MOLARITY `=("MOLES of" HNO_(3))/("Vol. of solution")xx1000` `2=("mass"//63)/(100)xx63=31.5` Mass of `HNO_(3)` required for 70% solution `=(31.5xx100)/(70)=45.0g`

Discussion

18.	How many grams of chlorine can be produced by the electrolysis of molten NaCl with a current of 1.00 A for 15 min? Also calculate the number of chlorine molecules liberated.
Answer» SOLUTION :`Q=900C` `2CL^(-)toCl_(2)+2E^(-),""2xx96500" C liberate "Cl_(2)=1`mole `therefore900C` will liberate `Cl_(2)=(1)/(2xx96500)xx900=4.66xx10^(-3)"mole"=(4.66xx10^(-3))xx71g=0.331g` `=(4.66xx10^(-3))xx6.02xx10^(23)` molecules `=2.80xx10^(21)` molecules.

Discussion

19.	how many grams of cobalt metal will be deposited when solution of cabalt (II) chloride is electrolyzed with a current of 10 amperes for 109 minutes (1Faraday=96,500 C, Atomic mass of Co=59u)
Answer» 4 20 40 0.66 Solution :`w=Zit` `thereforew=(E_(B)xxIt)/(96500) ""(thereforeE_(B)=(M_(B))/(Z)=(59)/(2))` `w=(59)/(2)xx(10xx109xx60)/(96500)` w=19.9

Discussion

20.	How many grams of CH_(3)OH should be added to water to prepare 150 ml solution of 2.0 M CH_(3)OH ?
Answer» 9.6 2.4 `9.6xx10^(3)` `2.4xx10^(3)` Solution :MOLARITY `=("Wt. of " CH_(3)OH xx 1000)/("Mol. Wt." xx "VOLUME")` `2.0=("Wt. of " CH_(3)OH xx 1000)/(32xx150)` `:.` Wt. of `CH_(3)OH=(2.0xx32xx150)/(1000)=9.6 G`

Discussion

21.	How many grams of calcium oxalate should be dissolved in water to make one litre of saturated solution? K_sp of CaC_2O_4 is 2.5 x 10^-9 and its molecular weight is 128 u
Answer» `6.410^-3 G` `8.010^-3 g` `1.2810^-3 g` `6.43.2^-3 g` ANSWER :A

Discussion

22.	How many grams of CaO are required to neutralise 852g of P_(4)O_(10)?
Answer» Solution :The REACTION will be: `6CaO+P_(4)O_(10)rarr2Ca_(3)(PO_(4))_(2)` `852g P_(4)O_(10) m3 "mol" P_(4)O_(10)` 1 MOLE of `P_(4)O_(10)` neutralises 6 MOLES of `CAO` `therefore 3 "moles of" P_(4)O_(10)` will neutralise 18 moles of CaO. `therefore "mass of" CaO=18xx56=1008g`

Discussion

23.	How many grams of CaF_2must be dissolved in 100 mL of water at 25^@Cto make the solution saturated? K_(sp)(CaF_2) = 3.9 xx 10^(-11)
Answer» SOLUTION :`1.66 XX 10^(-3)G `

Discussion

24.	How many grams of CaC_(2)O_(4) (molecular weight = 128) on dissolving water will give a saturated solution [K_(sp)(CaC_(2)O_(4)) = 2.5 xx 10^(-9) mol^(2) I^(-2)]
Answer» `0.0064 G` `0.1280g` `0.0128 g` `1.2800 g` Solution :Solubility of `CaC_(2)O_(4) = sqrt(K_(sp)) = sqrt(2.5 XX 10^(-9))` `= 5 xx 10^(-5) mol L^(-1)` `= 5 xx 10^(-5) xx 128 = 640 xx 10^(-5) = 0.0064 g`.

Discussion

25.	How many grams of CaC_(2)O_(4) will be dissolved in 1L of distilled water to make its saturated solution ? (K_(sp)" of " CaC_(2)O_(4)=2.5xx10^(-9)and mol. wt. of CaC_(2)O_(4)=128) :
Answer» 0.0064 G 0.0128 g 0.0032 g 0.0640 g ANSWER :A

Discussion

26.	How many gramsof CaC_2O_4 saturation will dissolve in one litre of saturated solution ? ( K_sp of CaC_2O_4 is 2.5 xx 10^_9 mol^-2 and its molecular weight is 128).
Answer» 0.0064g 0.0128g 0.0032 g 0.0640 g Answer :A

Discussion

27.	How many grams of barium chloride (BaCl_(2)) are needed to prepare 100cm^(3) of 0.250 mL of a 0.50 M BaCl_(2) solution?
Answer» SOLUTION :Molecular mass of `BaCl_(2)=137+71=208u`. For 1000 `CM^(3)` of 1 M `BaCl_(2)` so. Mass of `BaCl_(2)` needed `=(208)/(1000)x100xx0.25g=5.20g`

Discussion

28.	How many grams of a non volatile solute having a molecular mass of 90 g/mole are to be dissolved in 97.5 g water in order to obtain relative lowering in the vapour pressure of 2.5 percent:
Answer» 25 18 12.5 9 Answer :C

Discussion

29.	How many grams of a dibasic acid (Mol. Wt.=200) should be present in 100mL of its aqueous solution to give decinormal strength?
Answer» ANSWER :1

Discussion

30.	How many grams atoms of S are present in 0.25 g of S
Answer» 2.5 32 4 6 Answer :A

Discussion

31.	How many gram of KMnO_(4) are contained in 4 litres of 0.05N solution? The KMnO_(4) is to be used as an oxidant in acid medium. ( Mol. wt. of KMnO_(4) = 158)
Answer» 1.58g 15.8 g 6.32g 31.6g Answer :C

Discussion

32.	How many gram of KMnO_(4)are contained in 4 litre of 0.05 N solution . The KMmO_(4) is to be used as an oxidant in acidic medium ?
Answer» 1.58 g 15.8 g 6.32 g 31 .6 g Answer :3

Discussion

33.	How many gram of HCl will be present in 150 ml of its 0.52 M solution
Answer» 2.84 GM 5.70 gm 8.50 gm 3.65 gm Solution :`M = (W)/(mxx V(L)), 0.52 = (w)/(36.5xx0.15), w = 2.84 gm`

Discussion

34.	How many gram atoms of oxygen are present in 11.2 litres of CO_2at NTP ?
Answer» ANSWER :1 GRAM ATOM

Discussion

35.	How many gm of the oxidising agent gets reduced in the reaction of 65.4 gm of Zn with concentrated nitric acid ?
Answer» 126 252 130.8 65.4 Solution :`Zn + 4HNO_(3) to Zn(NO_(3))_(2) + 2H_(2)O + 2NO_(2)`

Discussion

36.	How many gm of H_(2)SO_(4) is present in 0.25 gm mole of H_(2)SO_(4)
Answer» `24.5` `2.45` `0.25` `0.245` SOLUTION :`N=(W)/(m) , w=n XX m =0.25xx98 =24.5 GM`

Discussion

37.	How many gm. of ethanol is required in the reaction with Na metal in order to give 560 ml. dihydrogen gas at STP ? [mole. mass of ethanol = 46 gm mol^(-1)]
Answer» 1.15 2.3 4.6 11.5 Solution :`underset("(?)")(underset(46 "gram")(C_(2)H_(5)OH))+Na to C_(2)H_(5)ONA + underset(560)(underset(11200 "mili")((1)/(2)H_(2)))` `(560 XX 46)/(11200)= 2.3` gram Na is NEEDED.

Discussion

38.	How many gm of bromine will react with 21 gm C_3H_6
Answer» 80 160 240 320 Solution :`undersetundersetunderset"42 GMS""1 MOLE""PROPENE"(CH_3-CH)=CH_2+undersetunderset"160 gms""1 mole"(Br_2)to CH_3-underset"1,2-Dibromo propane"(undersetunderset(Br)(\|)CH_2-undersetunderset(Br)(\|)CH_2)` `because` 24 gms of propene reacts with 160 gms of bromine `because` 21 gms of propene `160/42xx21=80` gms

Discussion

39.	How many germs of K_(2)C_(7)O_(7) are required to oxidise 20.0g of Fe^(+) ion in FeSO_(4) "to" Fe^(3+) ions if the reaction is carried out in the acidic medium? Molar mass of K_(2)Cr_(2)O_(7) and FeSO_(4) are 294 and 152 respectively.
Answer» 6.45g 7.45g 8.45g 9.45g Solution :Number of moles of `FeSO_(4)=((20g))/(152g mol^(-1))` =0.132mol Ionic equation for the OXIDATION reaction carried in the acidic medium may be WRITTEN as: `Cr_(2)O_(7)^(2-)+6Fe^(2+)+14H^(+) to 2Cr^(3+)+6fe^(3+)+7H_(2)O` 6 mol. of `Fe^(2+) -= ` 1 mol of `K_(2)Cr_(2)O_(7)` 0.132 mol of `Fe^(2+)-=((1 mol))/((6 mol))xx(0.132 mol^(-1)` = 0.022 mol . of `K_(2)Cr_(2)O_(7)` MASS of `K_(2)Cr_(2)O_(7) = (0.022 mol) xx(294 g mol ^(-1))` = 6.468 g.

Discussion

40.	How many geometrical isomers of 2-Methyl-7-chloronobonmane are possible ?
Answer» ANSWER :4

Discussion

41.	How many geometrical isomers of this compound are possible:
Answer» 0 2 3 4 Answer :B

Discussion

42.	How many geometrical isomers of this compound are possible ?
Answer» 0 2 3 4 Answer :B

Discussion

43.	How many geometrical isomers are there for(a) [CO(NH_(3))_(2)Cl_(4)], octahedral (b) [AuCl_(2)Br_(2)] square planar (c) (CoCl_(2)Br_(2)]tetrahedral
Answer» SOLUTION :TWO, CIS- and trans (b) Two, cis- and trans (c) No isomerism is exhibited.

Discussion

44.	How many geometrical isomers arepossible for [Pt(NO_(2))(NH_(2)OH)(Py)]^(+)?
Answer» SOLUTION :Mabcd, SQUARE PLANAR, TWO ISOMERS.

Discussion

45.	How many geometrical isomers are possible in the following coordination entities ? (i) [Cr(C_(2)O_(4))_(3)]^(3-) (ii) [CoCl_(3)(NH_(3))_(3)]
Answer» Solution :(i) NIL (ii) Two (fac and MER)

Discussion

46.	how many geometrical isomers are posssible in the following coordination entitles ? (a) [Cr(C_(2)O_(4))_(3)]^(3-)(b) [Co(NH_(3))_(3)CL_(3)]
Answer» SOLUTION :(a)`[Cr(C_(2)O_(4))_(3)]^(3-)`: No GEOMETRICAL isomerism is possible . (b) `[Co(NH_(3))_(3)CL_(3)]`: Two geometrical ISOMERS : fac and mer For details, consult section 7 .

Discussion

47.	How many geometrical isomers are possible for [Pt(Py)(NH_(3))(Br)(Cl)] ?
Answer» 3 4 0 15 Answer :A

Discussion

48.	How many geometrical isomers are possible in the following coordination entities ? [Cr(C_(2)O_(4))_(3)]^(3-)
Answer» SOLUTION :There is no POSSIBILITY of GEOMETRICAL ISOMERISM.

Discussion

49.	How many geometrical isomers are possible in the following coordination entities ? [Co(NH_(3))_(3)Cl_(3)]
Answer» Solution :TWO GEOMETRICAL isomers are possible as GIVEN below :

Discussion

50.	How many geometrical isomers are possible for the square planar complex [Pt(NO_(2))(py)(NH_(3))(NH_(2)OH)]NO_(2) (a) Four (b) Five (c ) Eight (d) Three .
Answer» 4 5 8 3 Answer :D

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

How many grams of NaOH must be present in one litre of the solution of give it a pH = 12?

How many grams of NaOH are equivalent to 100 ml of 0.1 N oxalic acid

How many grams of NaBr must be added to 270g of water to lower the vapour pressure by 3.125mm Hg at which vapour pressure of water is 50mm Hg (Na=23,Br=80) ? Assume 100% ionisation of NaBr.

How many grams of NaCl can be added to 785 mL of 0.0015 M AgNO_3before a precipitate forms? K_(sp) (AgCl) = 1.8 xx 10^(-10) .

How many grams of Na_(2)CO_(3) should be dissolved in 250 g of water to prepare 0.1 m solution?

How many grams of methyl alcohol should be added to I 0 litre tank of water to prevent its freezing at 268 K ? (K _(f) for water is 1.86 K k g mol ^(-1))

How many grams of KCI should be added to 1.0 kg of water to lower its freezing point to -8^(@)C. Calculate the degree of molality of BaCI_(2) in this solution. (K_(b) "for water "=0.52 K m^(-1))

How many grams of ice at 0^(@)C can be melted by the addition of 500 J of heat (The molar heat of fusion for ice is 6.02 kJmol^(-1))

Solubility product of silver bromide is 5.0xx10^(-13). The quantity of potassium bromide (molar mass taken as 120 g mol^(-1)) to be added to 1 litre of 0.05 M solution of silver nitrate to start the precipitation of AgBr is :

How many grams of I_2 are present in a solution which require 40 ml of 0.11 N Na_2 S_2 O_3 to react with it ? S_2 O_3^(2-) + I_2 to S_4 O_6^(2-) + 2I^(-)

How many grams of H_2SO_4 are present in o.25 mole of H_2SO_4.

How many grams of gas would be adsorbed per gram of a substance at 8 atm by assuming Freundlich adsorption isotherm. (x)/(m) = kp^(1//m)"" and "" k = 10^(-2)atm^(-1//3)"" & "" n = 3.

How many grams of H_(2) and O_(2) are produced during the electrolysis of water under a 1.30 amp of current for 5 hours ? What volumes of dry gases are produced at NTP ?

How many grams of copper will be replaced in 2L of a 1.50 M CuSO_(4) solution if the latter is made to react with 27.0 of aluminium (Cu=63.5, AI= 27.0)

How many grams of concentrated nitric acid solution should be used to prepare250 mL of 2.0M HNO_(3) ? The concentrated acid is 70% HNO_(3)

How many grams of concentrated nitric acid solution should be used to prepare 250 mL of "2.0 M HNO"_(3) ? The concentrated nitric acid is 70%HNO_(3)

How many grams of concentrated nitric acid solution should be used to prepare 250 mL of 2.0 M HNO_(3) ? The concentrated acid is 70% HNO_(3) .

How many grams of chlorine can be produced by the electrolysis of molten NaCl with a current of 1.00 A for 15 min? Also calculate the number of chlorine molecules liberated.

how many grams of cobalt metal will be deposited when solution of cabalt (II) chloride is electrolyzed with a current of 10 amperes for 109 minutes (1Faraday=96,500 C, Atomic mass of Co=59u)

How many grams of CH_(3)OH should be added to water to prepare 150 ml solution of 2.0 M CH_(3)OH ?

How many grams of calcium oxalate should be dissolved in water to make one litre of saturated solution? K_sp of CaC_2O_4 is 2.5 x 10^-9 and its molecular weight is 128 u

How many grams of CaO are required to neutralise 852g of P_(4)O_(10)?

How many grams of CaF_2must be dissolved in 100 mL of water at 25^@Cto make the solution saturated? K_(sp)(CaF_2) = 3.9 xx 10^(-11)

How many grams of CaC_(2)O_(4) (molecular weight = 128) on dissolving water will give a saturated solution [K_(sp)(CaC_(2)O_(4)) = 2.5 xx 10^(-9) mol^(2) I^(-2)]

How many grams of CaC_(2)O_(4) will be dissolved in 1L of distilled water to make its saturated solution ? (K_(sp)" of " CaC_(2)O_(4)=2.5xx10^(-9)and mol. wt. of CaC_(2)O_(4)=128) :

How many gramsof CaC_2O_4 saturation will dissolve in one litre of saturated solution ? ( K_sp of CaC_2O_4 is 2.5 xx 10^_9 mol^-2 and its molecular weight is 128).

How many grams of barium chloride (BaCl_(2)) are needed to prepare 100cm^(3) of 0.250 mL of a 0.50 M BaCl_(2) solution?

How many grams of a non volatile solute having a molecular mass of 90 g/mole are to be dissolved in 97.5 g water in order to obtain relative lowering in the vapour pressure of 2.5 percent:

How many grams of a dibasic acid (Mol. Wt.=200) should be present in 100mL of its aqueous solution to give decinormal strength?

How many grams atoms of S are present in 0.25 g of S

How many gram of KMnO_(4) are contained in 4 litres of 0.05N solution? The KMnO_(4) is to be used as an oxidant in acid medium. ( Mol. wt. of KMnO_(4) = 158)

How many gram of KMnO_(4)are contained in 4 litre of 0.05 N solution . The KMmO_(4) is to be used as an oxidant in acidic medium ?

How many gram of HCl will be present in 150 ml of its 0.52 M solution

How many gram atoms of oxygen are present in 11.2 litres of CO_2at NTP ?

How many gm of the oxidising agent gets reduced in the reaction of 65.4 gm of Zn with concentrated nitric acid ?

How many gm of H_(2)SO_(4) is present in 0.25 gm mole of H_(2)SO_(4)

How many gm. of ethanol is required in the reaction with Na metal in order to give 560 ml. dihydrogen gas at STP ? [mole. mass of ethanol = 46 gm mol^(-1)]

How many gm of bromine will react with 21 gm C_3H_6

How many germs of K_(2)C_(7)O_(7) are required to oxidise 20.0g of Fe^(+) ion in FeSO_(4) "to" Fe^(3+) ions if the reaction is carried out in the acidic medium? Molar mass of K_(2)Cr_(2)O_(7) and FeSO_(4) are 294 and 152 respectively.

How many geometrical isomers of 2-Methyl-7-chloronobonmane are possible ?

How many geometrical isomers of this compound are possible:

How many geometrical isomers of this compound are possible ?

How many geometrical isomers are there for(a) [CO(NH_(3))_(2)Cl_(4)], octahedral (b) [AuCl_(2)Br_(2)] square planar (c) (CoCl_(2)Br_(2)]tetrahedral

How many geometrical isomers arepossible for [Pt(NO_(2))(NH_(2)OH)(Py)]^(+)?

How many geometrical isomers are possible in the following coordination entities ? (i) [Cr(C_(2)O_(4))_(3)]^(3-) (ii) [CoCl_(3)(NH_(3))_(3)]

how many geometrical isomers are posssible in the following coordination entitles ? (a) [Cr(C_(2)O_(4))_(3)]^(3-)(b) [Co(NH_(3))_(3)CL_(3)]

How many geometrical isomers are possible for [Pt(Py)(NH_(3))(Br)(Cl)] ?

How many geometrical isomers are possible in the following coordination entities ? [Cr(C_(2)O_(4))_(3)]^(3-)

How many geometrical isomers are possible in the following coordination entities ? [Co(NH_(3))_(3)Cl_(3)]

How many geometrical isomers are possible for the square planar complex [Pt(NO_(2))(py)(NH_(3))(NH_(2)OH)]NO_(2) (a) Four (b) Five (c ) Eight (d) Three .