Description : Sodium nitroprusside `Na_(2)[Fe(CN)_(5)NO]` is used as a reagent for the detection of
Last Answer : Sodium nitroprusside `Na_(2)[Fe(CN)_(5)NO]` is used as a reagent for the detection of A. sulphur B. nitrogen C. bromine D. iodine.
Description : `Na_(2)S + Na_(2)[Fe(CN)_(5)NO]to " X"` (Violet colour) The total number of possible isomers for complex " X" is , provided the ambident behaviour of
Last Answer : `Na_(2)S + Na_(2)[Fe(CN)_(5)NO]to " X"` (Violet colour) The total number of possible ... the ambident behaviour of `CN^(-)` is not considered.
Description : Among the following complexes : `K_(3)[Fe(CN)_(6)],[Co(NH_(3))_(6)]Cl_(3)` , `Na_(3)[Co ( o x )_(3)],[Ni(H_(2)O)_(6)]Cl_(2)`, `K_(2)[Pt(CN)_(4)]` and
Last Answer : Among the following complexes : `K_(3)[Fe(CN)_(6)],[Co(NH_(3))_(6)]Cl_(3)` , `Na_(3)[Co ( o x )_(3)],[Ni(H_( ... ,M,N B. K,N,O,P C. L,M,O,P D. L,M,N,O
Description : How many are redox reaction- `{:((i),K_(4)[Fe (CN)_(6)] + "conc."H_(2)SO_(4) overset(Delta)rarr,(ii),"conc." H_(2)SO_(4) + KCl rarr),((iii),"conc." H_
Last Answer : How many are redox reaction- `{:((i),K_(4)[Fe (CN)_(6)] + "conc."H_(2)SO_(4) overset(Delta)rarr,(ii)," ... ,((ix),"conc." H_(2)SO_(4) + Cu rarr,,):}`
Description : In the coordination compound ,`Na_(2)[Pt(CN)_(4)]` the Lewis acids is
Last Answer : In the coordination compound ,`Na_(2)[Pt(CN)_(4)]` the Lewis acids is A. `[Pt(CN)_(4)]^(2-)` B. `Na^(+)` C. `Pt^(2+)` D. `CN^(-)`
Description : Statement-1: Zn displaces Ag from the complex `Na[Ag(CN)_(2)]` to give `Na_(2)[Zn(CN)_(4)]` Statement-2:Zn is more electro positive than silver
Last Answer : Statement-1: Zn displaces Ag from the complex `Na[Ag(CN)_(2)]` to give `Na_(2)[Zn(CN)_(4) ... false D. Statement-1 is false but Statement -2 is true
Description : A colouless solution of a compound gives a precipitate with `AgNO_(3)` solution but no precipitate with a solution of `Na_(2)CO_(3)`. The action of co
Last Answer : A colouless solution of a compound gives a precipitate with `AgNO_(3)` solution but no precipitate with a solution ... `CaCl_(2)` C. `Nal` D. `NaBr`
Description : Sulphide ion reacts with `[Fe(CN)_(5)NO]` to form a purple coloured compound (X). In this reaction oxidation state of iron .
Last Answer : Sulphide ion reacts with `[Fe(CN)_(5)NO]` to form a purple coloured compound (X). In this reaction ... . changes from +2 to +4 D. does not change.
Description : For the just coagultion of 250 mL of `Fe(OH)_(3)` sol, 2 mL of `1 M Na_(2)SO_(4)` electrolyte is required. What is the coagulating value of `Na_(2)SO_
Last Answer : For the just coagultion of 250 mL of `Fe(OH)_(3)` sol, 2 mL of `1 M Na_(2)SO_(4)` ... What is the coagulating value of `Na_(2)SO_(4)` electrolyte.
Description : `Na_(2)CO_(3),NaCl, NaNO_(2),Na_(2)SO_(3),NaBr,CH_(3)CO O Na` are separately treated with `AgNO_(3)` solution. In how many cases white precipitate is/
Last Answer : `Na_(2)CO_(3),NaCl, NaNO_(2),Na_(2)SO_(3),NaBr,CH_(3)CO O Na` are separately ... solution. In how many cases white precipitate is/are obtained.
Description : Calculate the EAN of central atom in the following complexes `(a) [Cr(CO)_(6)]" "(b) [Fe(CN)_(6)]^(4-)" " (c ) [Fe(CO)_(5)] " " (d) [Co(NH_(3))_(6)]^(
Last Answer : Calculate the EAN of central atom in the following complexes `(a) [Cr(CO)_(6)]" "(b) [Fe(CN)_(6)]^(4-)" " (c ... ))_(6)]^(4+)" " (h) [PtCl_(6)]^(2-)`
Description : What will be the oxidation number of Fe in `K_(3)[Fe(CN)_(6)]` :-
Last Answer : What will be the oxidation number of Fe in `K_(3)[Fe(CN)_(6)]` :- A. `+4` B. `+3` C. `+2` D. Zero
Description : The oxidation number of iron in potassium ferricyanide `[K_(3)Fe(CN)_(6)]` is :-
Last Answer : The oxidation number of iron in potassium ferricyanide `[K_(3)Fe(CN)_(6)]` is :- A. Two B. Six C. Three D. Four
Description : What would be the equivalent weight of the reductant in the reaction : `[Fe(CN)_(6)]^(-3)+H_(2)O_(2)+2OH^(-)rarr2[Fe(CN)_(6)]^(4-)+2H_(2)O+O_(2)` [Giv
Last Answer : What would be the equivalent weight of the reductant in the reaction : `[Fe(CN)_(6)]^(-3)+H_(2)O_(2)+2OH^(-) ... O=16,H=1]` A. 17 B. 212 C. 34 D. 32
Description : Hydrogen peroxide oxidises `[Fe(CN)_(6)]^(4-)` to `[Fe(CN)_(6)]^(3-)` in acidic medium but reduces `[Fe(CN)_(6)]^(3-)` to `[Fe(CN)_(6)]^(4-)` in alkal
Last Answer : Hydrogen peroxide oxidises `[Fe(CN)_(6)]^(4-)` to `[Fe(CN)_(6)]^(3-)` in acidic medium but reduces `[Fe(CN)_( ... 2) O + O_(2)) and (H_(2)O + OH^(-))`
Description : In `K_(4)[Fe(CN)_(6)],Fe` is in the form of
Last Answer : In `K_(4)[Fe(CN)_(6)],Fe` is in the form of A. An atom B. Neutral complex C. Cationic complex D. Anionic complex
Description : The correct statement about the magnetic properties of `[Fe(CN)_(6)]^(3-) and [FeF_(6)]^(3-) ` is : (Z=26)
Last Answer : The correct statement about the magnetic properties of `[Fe(CN)_(6)]^(3-) and [FeF_(6)]^(3-) ` ... ` is paramagnetic, `[FeF_(6)]^(3-)` is diamagnetic
Description : IUPAC name of `K_(3)[Fe(CN)_(6)]` is
Last Answer : IUPAC name of `K_(3)[Fe(CN)_(6)]` is A. Potassium hexacyanoferrate(II) B. ... C. Potassium hexacyanoiron(II) D. Tripotassium hexacyanoiron(II)
Description : A blue colour complex is obtained in the analysis of `Fe^(+3)` having formula `Fe_(4)[Fe(CN)_(6)]_(3)` Let a= oxidation number of Iron in the corrdina
Last Answer : A blue colour complex is obtained in the analysis of `Fe^(+3)` having formula `Fe_(4)[Fe(CN)_ ... coordination sphere. Then find the value of (c+a-2b)
Description : Cold conc. `HNO_(3)` will completely dissolve: (i) Pb (ii) `Pb_(3)O_(4)` (iii) Fe (iv) Sn (v) Mg (vi) MgO (vii) Hg (viii) Au (ix) Ag (x) Pt
Last Answer : Cold conc. `HNO_(3)` will completely dissolve: (i) Pb (ii) `Pb_(3)O_(4)` (iii) Fe (iv) Sn (v) Mg (vi) MgO (vii) Hg (viii) Au (ix) Ag (x) Pt
Description : Consider the follwing complexes ion `P,Q` and `R` `P =[FeF_(6)]^(3-), Q=[V(H_(2)O)_(6)]^(2+)` and `R=[Fe(H_(2)O)_(6)]^(2+)` The correct order of the c
Last Answer : Consider the follwing complexes ion `P,Q` and `R` `P =[FeF_(6)]^(3-), Q=[V(H_(2)O)_(6)]^(2+)` and `R=[Fe( ... lt P` C. `R lt P lt Q` D. `Q lt P lt R`
Description : The acidic aqueous solution of ferrous ion forms a brown complex in the presence of `NO_(3)^(Θ)` by the follwing two steps: `[Fe(H_(2)O)_(6)]^(2+) +NO
Last Answer : The acidic aqueous solution of ferrous ion forms a brown complex in the presence of `NO_(3)^(Θ)` ... + H_(2)O` Complete and balance the equations .
Description : Aniline reacts with mixed acid (conc. `HNO_(3)` and conc. `H_(2)SO_(4)`) at 288 K to give P (51%), Q (47%) and R(2%). The major product (s) of the fol
Last Answer : Aniline reacts with mixed acid (conc. `HNO_(3)` and conc. `H_(2)SO_(4)`) at 288 K to give P ... of the following reaction sequence is (are) B. C. D.
Description : For the complex `K_(2)[Cr(NO)(NH_(3))(CN)_(4)],mu=1.73 BM`. (i) Write IUPAC name. (ii) What will be structure ? (iii) How many unpaired electrons are
Last Answer : For the complex `K_(2)[Cr(NO)(NH_(3))(CN)_(4)],mu=1.73 BM`. (i) Write IUPAC name. ... the complex. (vi) What will be the hybridisation of the complex.
Description : On adding `AgNO_(3)` solution to a solution of `[Pt(NH_(3))_(3)Cl_(3)]Cl`, the percentage of total chloride ion precipitated is
Last Answer : On adding `AgNO_(3)` solution to a solution of `[Pt(NH_(3))_(3)Cl_(3)]Cl`, the percentage of total ... ion precipitated is A. 100 B. 75 C. 50 D. 25
Description : [Fe(H2O)6]3+ is strongly paramagnetic whereas [Fe(CN)6]3- is weakly paramagnetic. Explain. (At. no. Fe = 26) -Chemistry
Last Answer : In both the cases, Fe is in oxidation state +3. Outer electronic configuration of Fe+3 is : In the presence of CN-, the 3d electrons pair up leaving only one unpaired electron. The ... sp3d2 forming an outer orbital complex. As it contains five unpaired electrons so it is strongly paramagnetic. .
Description : Carboxylic acid reacts with halogen in presence of red P to gives__________ a) α-halogen acids b) β-halogen acid c) Acid halide d) Dicarboxylic acid
Last Answer : a) α-halogen acids
Description : `FeCr_(2)`(chromite ) is a good soure of chromium and its compounds like `Na_(2)CrO_(4),Na_(2)Cr_(2)O_(7)` ` P:FeCr_(2)O_(4)+NaOH+airto A+Fe_(2)O_(3)Q
Last Answer : `FeCr_(2)`(chromite ) is a good soure of chromium and its compounds like `Na_(2)CrO_(4),Na_(2)Cr_ ... Dissolving in `H_(2)O` D. Dissolving in dil,HCl
Last Answer : `FeCr_(2)`(chromite ) is a good soure of chromium and its compounds like `Na_(2)CrO_(4),Na_(2)Cr_(2)O_(7)` ... B. C and Al C. C in both D. Al in both
Last Answer : `FeCr_(2)`(chromite ) is a good soure of chromium and its compounds like `Na_(2)CrO_(4),Na_(2)Cr_(2)O_(7)` ` ... D. `Na_(4)[Fe(OH)_(6)],H_(2)SO_(4)`
Description : What type of isomers are the following : `(i) [Mn(CO)_(5)SCN] and [Mn(CO)_(5)NCS]` `(ii) [Co(en)_(3)[Cr(CN)_(6)] and [Cr(en)_(3)][Co(CN)_(6)]` `(iii)
Last Answer : What type of isomers are the following : `(i) [Mn(CO)_(5)SCN] and [Mn(CO)_(5)NCS]` `(ii) [Co(en)_(3)[Cr( ... ]Cl and [Co(H_(2)O)Cl_(3)(py)_(2)]H_(2)O`
Description : If P, Q and R are three points on a line and Q is between P and R,then prove that PR - QR= PQ. -Maths 9th
Last Answer : Solution :-
Description : In angle PQR angle P = 80 .If PQ =PR find angle Q and angle R -Maths 9th
Last Answer : a triangle includes 3 angles summing up as 180° so 180 =
Description : Which complex of the following pairs has the larger value of `Delta_(0)` (i) `[Co(CN)_(6)]^(3-)` and `[Co(NH_(3))_(6)]^(3+)` (ii) `[Co(NH_(3))_(6)]^(3
Last Answer : Which complex of the following pairs has the larger value of `Delta_(0)` (i) `[Co(CN)_(6)]^(3-)` and `[Co(NH_( ... (3))_(6)]^(3+) lt [CoF_(6)]^(3-)`
Description : Statement-I : In the extraction of Ag, the complex `Na[Ag(CN)_(2)]` is reacted with `Zn` Statement-II : `Zn` is transition metal according to electron
Last Answer : Statement-I : In the extraction of Ag, the complex `Na[Ag(CN)_(2)]` is reacted with `Zn` ... . Statement-1 : is false , statement-2 : is true
Description : For the octahedral complexes of `Fe^(3+)` in `SCN^(-)`(thiocyanato-S) and in `CN^(-)` ligands environment, the difference between the spin-only magnet
Last Answer : For the octahedral complexes of `Fe^(3+)` in `SCN^(-)`(thiocyanato-S) and in `CN^(-)` ligands ... the nearest integer) is : [Atomic number of Fe=26]
Description : A complex compound in which the oxidation number of a metal is zero is - (1) K4 [Fe (CN)6] (2) K3 [Fe (CN)6] (3) [Ni (CO)4] (4) [Pl (NH3)4]Cl2
Last Answer : (3) [Ni (CO)4]
Description : Out of NaCl, MgSO4 , Al2 (SO4 ) 3 , K4 [Fe(CN)6 ], which one will bring about the coagulation of a gold sol quickest and in the least of concentration ?
Last Answer : Ans. Al2 (SO4 ) 3 .
Description : What is expected value of ‘i’ for K4[Fe(CN)6] in dilute solution?
Last Answer : Ans:- Expected value of n in K4(Fe(CN)6) is 5.
Description : Statement I `[Fe(H_(2)O)_(5)NO]SO_(4)` is paramagnetic Statement II The Fe in `[Fe(H_(2)O)_(5)NO]SO_(4)` has three unpaired electrons .
Last Answer : Statement I `[Fe(H_(2)O)_(5)NO]SO_(4)` is paramagnetic Statement II The Fe in `[Fe(H_(2)O) ... is false D. Statement-1 is false, statement-2 is true.
Description : Asserton :- The formal oxidation no. of sulphur in `Na_(2)S_(4)O_(6)` is `2.5` Reason :- Two S-atoms are not directly linked with O-atoms.
Last Answer : Asserton :- The formal oxidation no. of sulphur in `Na_(2)S_(4)O_(6)` is `2.5` Reason :- ... Reason is False. D. If both Assertion & Reason are False.
Description : Why gypsum is used in crop of mustard ? (A) For supplying sulphur (s) (B) For supplying N (C) For supplying Fe (D) For supplying P
Last Answer : (A) For supplying sulphur (s)
Description : Match each of the reaction given in Column I with the corresponding product(s) given in Column II. `{:("Column I","Column II"),(A. "Cu+dil. HNO"_(3),p
Last Answer : Match each of the reaction given in Column I with the corresponding product(s) given in Column II. `{:("Column I"," ... (,t. "Zn"("NO"_(3))_(2)):}`
Description : Match the Column-I with Column-II: `{:("Column-I","Column-II"),((a) ._(1)^(2)D + ._(1)^(3)T to ._(2)^(4)He + ._(0)^(1)n + "Energy",(p) beta - "emissio
Last Answer : Match the Column-I with Column-II: `{:("Column-I","Column-II"),((a) ._(1)^(2)D + ._(1)^(3)T to ._(2)^ ... )^(1)H + ._(+1)^(0)e,(s) "Hydrogen bomb"):}`
Description : `{:("column I","column II"),("(A)"4.1gH_(2)SO_(3),"(p) 200 mL of 0.5 N base is used for complete neutralization"),("(B)" 4.9 g H_(3)PO_(4),"(q) 200 mi
Last Answer : `{:("column I","column II"),("(A)"4.1gH_(2)SO_(3),"(p) 200 mL of 0.5 N base is used for ... Na_(2)CO_(3),"(s)May react with an oxidising agent"):}`
Description : `N_(2)O_(4), (HPO_(2))_(2), H_(2)CO_(3), SO_(2), SO_(3), P_(4)O_(10) H_(2)SO_(4), N_(2)O_(3), HNO_(3), H_(3)PO_(3)`. (a) Among the above compounds, co
Last Answer : `N_(2)O_(4), (HPO_(2))_(2), H_(2)CO_(3), SO_(2), SO_(3), P_(4)O_(10) H_(2)SO_(4), N_(2)O_(3 ... `d pi - p pi` bond are y. Given the answer as `x + y`