Description : Assertion :- Oxidation number of Cr in `Cr(CO)_(6)` is zero. Reason :- Cr is a metal.
Last Answer : Assertion :- Oxidation number of Cr in `Cr(CO)_(6)` is zero. Reason :- Cr is a metal. A. ... Reason is False. D. If both Assertion & Reason are False.
Description : Assertion :- Oxidation number of `Cr` in `CrO_(3)` is `+6`. Reason :- In `CrO_(5)`, four oxygen atoms are involved in peroxide linkage.
Last Answer : Assertion :- Oxidation number of `Cr` in `CrO_(3)` is `+6`. Reason :- In `CrO_(5)`, four ... Reason is False. D. If both Assertion & Reason are False.
Description : The oxidation state of Cr in `[Cr(H_(2)O)_(6)]Cl_(3), [Cr(C_(6)H_(6))_(2)], and K_(2)[Cr(CN)_(2)(O)_(2)(O_(2))(NH_(3))]` respectively are :
Last Answer : The oxidation state of Cr in `[Cr(H_(2)O)_(6)]Cl_(3), [Cr(C_(6)H_(6))_(2)], and K_(2)[Cr(CN)_(2)(O)_(2 ... and +4` C. `+3,+4 and +6` D. `+3,+2 and +4`
Description : The oxidation number and co-ordination number of chromium in complex ion `[Cr(C_(2)O_(4))_(2)(H_(2)O)_(2)]^(-)` are
Last Answer : The oxidation number and co-ordination number of chromium in complex ion `[Cr(C_(2)O_(4))_(2)(H_(2)O)_(2)]^(-)` are A. 3,6 B. 2,6 C. 2,8 D. 3,8
Description : `K_(2)Cr_(2)O_(7)` react with hydrazins to form product. The oxidation state of Cr in the product will be :-
Last Answer : `K_(2)Cr_(2)O_(7)` react with hydrazins to form product. The oxidation state of Cr in the product will be :- A. `+4` B. `+3` C. `+5` D. `+2`
Description : The oxidation state of `Cr` in `Cr_(2)O_(7)^(2-)` is
Last Answer : The oxidation state of `Cr` in `Cr_(2)O_(7)^(2-)` is A. `+2` B. `+6` C. `-6` D. `-4`
Description : The oxidation state of `Cr` in `[Cr(NH_(3))_(4)Cl_(2)]^(+)` is:
Last Answer : The oxidation state of `Cr` in `[Cr(NH_(3))_(4)Cl_(2)]^(+)` is:
Description : What is the highest oxidation state shown by Cr. (24) , Mn(25) ?
Last Answer : Ans: Cr. Shows (+6) and Mn Shows (+7) Oxidation state .
Description : Catalyst used in the oxidation of benzene to produce Maleic anhydride is (A) V2O5 (B) Pt (C) Ni (D) Cr
Last Answer : (A) V2O5
Description : Arrange the following compounds in order of increasing molar conductivity . `(i) K[Co(NH_(3))_(2)(NO_(2))_(4)]" " (ii) [Cr(NH_(3))_(3)(NO_(2))_(3)]` `
Last Answer : Arrange the following compounds in order of increasing molar conductivity . `(i) K[Co(NH_(3))_(2)(NO_(2))_(4)]" ... )" " (iv) [Cr(NH_(3))_(6)]Cl_(3)`
Description : Nitrogen forms a variety of compounds in all oxidation states ranging from - (1) -3 to + 5 (2) -3 to +3 (3) -3 to + 4 (4) -3 to +6
Last Answer : (1) -3 to + 5 Explanation: Nitrogen compounds are chemical compounds containing nitrogen ions. Nitrogen forms compounds with a wide range of oxidation states that range from -3 for the ... oxidation state compounds are strong oxidizing agents. -3 oxidation state compounds are weak reducing agents.
Description : Nitrogen forms a variety of compounds in all oxidation states ranging from (1) –3 to + 5 (2) –3 to + 3 (3) –3 to + 4 (4) –3 to + 6
Last Answer : –3 to + 5
Description : The number of coordination isomers possible for `[Fe(NH_(3))_(6)]^(3+)[Cr(C_(2)O_(4))_(3)]^(3-)` is __________
Last Answer : The number of coordination isomers possible for `[Fe(NH_(3))_(6)]^(3+)[Cr(C_(2)O_(4))_(3)]^(3-)` is __________
Description : Total number of paramagnetic complexes which are inner orbital complexes : `(i) [Cr(NH_(3))_(6)]Cl_(3) " " (ii)[Co(NH_(3))_(6)](NO_(3))_(2)" " (iii)[N
Last Answer : Total number of paramagnetic complexes which are inner orbital complexes : `(i) [Cr(NH_(3))_(6)]Cl_(3) " " (ii)[ ... (4)]" " Na_(4)[Fe(CN)_(5)(NOS)]`
Description : Assertion :- Oxidation number of `S` in `HSO_(3)^(-)` is `+4`. Reason :- Sulphur is in different oxidation state in different compounds.
Last Answer : Assertion :- Oxidation number of `S` in `HSO_(3)^(-)` is `+4`. Reason :- Sulphur is in ... Reason is False. D. If both Assertion & Reason are False.
Description : Which of the following compounds are arranged in increasing oxidation number of S :-
Last Answer : Which of the following compounds are arranged in increasing oxidation number of S :- A. `H_(2)SO_(3),H_(2)S,H_(2 ... (2)O_(3),H_(2)SO_(3),H_(2)SO_(4)`
Description : In which of the following compounds, the oxidation number of the started transition metal is zero.
Last Answer : In which of the following compounds, the oxidation number of the started transition metal is zero. A. `[Ni(CO)_(4)]` ... . `[Fe(H_(2)O)_(3)](OH)_(2)`
Description : In which one of the following compounds does sulphur have the least oxidation number
Last Answer : In which one of the following compounds does sulphur have the least oxidation number A. `SO_(2)` B. `H_(2)SO_(4)` ... (2)O_(3)` D. `Na_(2)S_(4)O_(6)`
Description : What are the minimum and maximum Oxidation Number of Cl in its compounds?
Last Answer : Ans. Minimum -0, maximum- +7.
Description : Compare the following complexes with respect to structural shapes of units, magnetic behaviour and hybrid orbitals involved in units : [Co(NH3)6]+3, [Cr(NH3)6]3+, Ni(CO)4 (At. nos. : Co = 27, Cr = 24, Ni = 28) -Chemistry
Last Answer : (i) [Co(NH3)6]+3 → Octahedral shape, d2sp3 hybridisation, diamagnetic Formation of [Co(NH2)6]+3 → oxidation state of Co is +3.
Description : Which isomerism is exhibited by `[Co(NH_(3))_(6)][Cr(CN)_(6)] and [Cr(NH_(3))_(6)][Co(CN)_(6)]`?
Last Answer : Which isomerism is exhibited by `[Co(NH_(3))_(6)][Cr(CN)_(6)] and [Cr(NH_(3))_(6) ... )]`? A. Ionization B. Linkage C. Coordination D. Polymerization.
Description : The IUPAC name of `[Co(NH_(3))_(6)][Cr(C_(2)O_(4))_(3)]` is :
Last Answer : The IUPAC name of `[Co(NH_(3))_(6)][Cr(C_(2)O_(4))_(3)]` is : A. ... (II) tris(oxalato)chromium(III) D. Hexaamminecobalt(III)trioxalatechromium(III)
Description : Which of the following facts about the complex `[Cr(NH_(3))_(6)]Cl_(3)` is wrong ?
Last Answer : Which of the following facts about the complex `[Cr(NH_(3))_(6)]Cl_(3)` is wrong ... The complex gives white precipitate with siver nitrate solution.
Description : The spin only magnetic moment value ( in Bohr magneton units ) of `Cr(CO)_(6)` is :
Last Answer : The spin only magnetic moment value ( in Bohr magneton units ) of `Cr(CO)_(6)` is :
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 : 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 : A `C_(6)H_(12)O` compound does not react with `Br_(2)` in `C Cl_(4)`, produces a flammable gas on treatment with `LiAlH_(4)`, and reacts with `H_(2)Cr
Last Answer : A `C_(6)H_(12)O` compound does not react with `Br_(2)` in `C Cl_(4)`, ... B. methoxycyclopentane C. 2-cyclopropyl-2-propanol D. 2-cyclobutylethanol
Description : Is Cr(NH3)6(NO3)3 is an element or compound?
Last Answer : Compound????
Description : Which species of chromium is toxic in water: (A) Cr+2 (B) Cr+3 (C) Cr + 6 (D) Cr is non-toxic element
Last Answer : (C) Cr + 6
Description : Which is an element which never exhibits positive oxidation state in any of its compounds? -Do You Know?
Last Answer : answer:
Description : In which of the following compounds, nitrogen exhibits highest oxidation state ?
Last Answer : In which of the following compounds, nitrogen exhibits highest oxidation state ? A. `N_(3)H` B. `NH_(2)OH` C. `N_(2)H_(4)` D. `NH_(3)`
Description : In which of the following compounds iron has lowest oxidation state?
Last Answer : In which of the following compounds iron has lowest oxidation state? A. `FeSO_(4)(NH_(4))_(2)SO_(4).6H_(2)O` B. ... ` C. `Fe(CO)_(5)` D. `Fe_(0.94)O`
Description : Which ordering of compounds is according to the decreasing order of the oxidation state of nitrogen ?
Last Answer : Which ordering of compounds is according to the decreasing order of the oxidation state of nitrogen ? A. `HNO_(3), ... `NO, HNO_(3), NH_(4)Cl, N_(2)`
Description : Which of the following elements react with metals to form their binary compounds exhibiting `-3` oxidation state ?
Last Answer : Which of the following elements react with metals to form their binary compounds exhibiting `-3` oxidation state ? A. N B. P C. As D. Bi
Description : The breakdown of the C-C bonds of complex compounds through oxidation within the cells, leading to release of considerable amount of energy is called.
Last Answer : The breakdown of the C-C bonds of complex compounds through oxidation within the cells, leading to release of considerable amount of energy is called.
Description : In which of the following compounds oxygen exhibits an Oxidation state of `+2`
Last Answer : In which of the following compounds oxygen exhibits an Oxidation state of `+2` A. `H_(2)O` B. `H_(2)O_(2)` C. `OF_(2)` D. `H_(2)SO_(4)`
Description : During each cycle of on going fatty acid oxidation, all the following compounds are generated except (A) H2O (B) Acetyl CoA (C) Fatty acyl CoA (D) NADH FATS AND FATTY ACID METABOLISM 103
Last Answer : Answer : A
Description : During each cycle of β-oxidation of fatty acid, all the following compounds are generated except (A) NADH (B) H2O (C) FAD (D) Acyl CoA
Last Answer : Answer : B
Description : Which is an element which never exhibits positive oxidation state in any of its compounds?
Last Answer : Fluorine
Description : Which two distinct microbial processes are responsible for the release of fixed nitrogen as dinitrogen gas (N2) to the atmosphere? (a) Aerobic nitrate oxidation and nitrite reduction (b) ... fixation by Rhizobium in root nodules of legumes (d) Anaerobic ammonium oxidation and denitrification
Last Answer : (d) Anaerobic ammonium oxidation and denitrification
Description : Organisms which obtain energy by the oxidation of reduced inorganic compounds are called (a) photoautotrophs (b) chemoautotrophs (c) saprozoic (d) coproheterotrophs.
Last Answer : (b) chemoautotrophs
Description : Oils are partially hydrogenated (not fully) to manufacture Vanaspati, because fully saturated solidified oils (A) Cause cholesterol build up and blood clotting (B) Are prone to rancid oxidation (C ... (as their complete removal is very difficult) (D) Have affinity to retain harmful sulphur compounds
Last Answer : (A) Cause cholesterol build up and blood clotting
Description : Nitrogen oxidation (nitrification)refers to the A- conversion of ammonium ions into nitrates through the activities of certain bacteria B- changing of atmospheric nitrogen (N2) to nitrogen compounds C- sulfur is oxidized to the sulfate form through Thiobacillusbacteria D- none of the above
Last Answer : conversion of ammonium ions into nitrates through the activities of certain bacteria
Description : The catalytic activity of transition metals and their compounds is ascribed mainly to (1) their chemical reactivity (2) their magnetic behaviour (3) their unfilled d-orbitals (4) their ability to adopt variable oxidation states
Last Answer : (4) their ability to adopt variable oxidation states