Description : Denticity of Ethylene diamine ligand is? a) Six b) Two c) Three d) Four
Last Answer : a) Six
Description : For the complex [Fe(en)2Cl2], Cl, (en = ethylene diamine), identify (i) the oxidation number of iron, (ii) the hybrid orbitals and the shape of the complex, (iii) the magnetic behaviour of the complex, (iv) ... an optical isomer also, and (vi) name of the complex. (At. no. of Fe = 26) \ -Chemistry
Last Answer : i) [Fe(en)2Cl2] Cl or x + 0 + 2 (-1) + (-1) = 0 x + (- 3) = 0 or x = + 3 ∴ Oxidation number of iron, x = + 3 (ii) The complex has two bidentate ligands and two ... )2Cl2] Cl, only cis-isomer shows optical isomerism. (vi) Name of complex: Dichloridobis (ethane-1, 2- diamine) Iron (III) chloride
Description : How many isomers are possible for the complex `[Co(en)_(2)Cl_(2)]`(en=ethylene diamine )
Last Answer : How many isomers are possible for the complex `[Co(en)_(2)Cl_(2)]`(en=ethylene diamine ) A. 4 B. 2 C. 6 D. 3
Description : Which among the following will be named as dibromidobis (ethylene diamine ) chromium (III) bromide ?
Last Answer : Which among the following will be named as dibromidobis (ethylene diamine ) chromium (III) bromide ? A. `[Cr(en)_(3) ... )]^(-)` D. `[Cr(en)Br_(2)]Br`
Description : Nylon-66 is manufactured from (A) Adipic acid and Hexamethylene diamine (B) Caprolactam (C) Maleic anhydride and Hexamethylene diamine (D) Dimethyl terephthalate (DMT) and ethylene glycol
Last Answer : (A) Adipic acid and Hexamethylene diamine
Description : Dacron is a (A) Condensation polymerisation product of Hexamethylene diamine and adipic acid (B) Condensation polymerisation product of dimethyl terephthalate (DMT) and ethylene glycol (C) Thermosetting material (D) None of these
Last Answer : (D) None of these
Description : Bakelite is obtained from : (a) Phenol and formaldehyde (b) Adipic acid and hexamethylene diamine (c) Dimethyl terephthalate and ethylene glycol (d) Neoprene
Last Answer : Phenol and formaldehyde
Description : Nylon-66 is manufactured from (A) Hexamethylene diamine and adipic acid (B) Hexamethylene diamine and Maleic anhydride (C) Caprolactam (D) Dimethyl terephthalate and ethylene glycol
Last Answer : (A) Hexamethylene diamine and adipic acid
Description : Dacron is a (A) Condensation product of Hexamethylene diamine and adipic acid (B) Thermosetting material (C) Condensation product of dimethyl terephthalate and ethylene glycol (D) None of these
Description : Which one of the following tests employs Ethylene Diamine Tetra Acetic Acid as a titrating agent? (a) Chlorides (b) Dissolved oxygen (c) Hardness (d) Residual chlorine
Last Answer : (c) Hardness
Description : Ethylene diamine tetraacetoacetate (pron: te-tra-a-see-tow-AS-e-tate) (EDTW) is often used for which of the following: w) Determine hardness of water x) Measure the amount of zinc in a solution. y) A preservative in foods z) All of the above
Last Answer : ANSWER: Z -- ALL OF THE ABOVE
Description : Giving a suitable example for each, explain the following : (i) Crystal field splitting (ii) Linkage isomerism (iii) Ambidentate ligand -Chemistry
Last Answer : i) Crystal field splitting: It is the splitting of the degenerate energy levels due to the presence of ligands. When ligand approaches a transition metal ion, the degenerate d-orbitals split into two ... the nitrogen atom or one of the oxygen atoms. Example : - SCN thiocyanate, - NCS isothiocyanate
Description : Explain the following : (i) Low spin octahedral complexes of nickel are not known. (ii) The π-complexes are known for transition elements only. (iii) CO is a stronger ligand than NTL, for many metals. -Chemistry
Last Answer : (i) The electronic configuration of Ni is [Ar] 3d8 4s2 which shows that it can only form two types of complexes i.e. square planar (dsp2) in presence of strong ligand and tetrahedral (sp3) in ... more splitting of d-orbitals and moreover it is also able to form π bond due to back bonding.
Description : Assertion :- Oxidation number of `Ni` in `[Ni(CO)_(4)]` is zero. ltbr. Reason :- Nickel is bonded to neutral ligand, carbonyl.
Last Answer : Assertion :- Oxidation number of `Ni` in `[Ni(CO)_(4)]` is zero. ltbr. Reason :- Nickel is ... is False. D. If both Assertion & Reason are False.
Description : The strong field ligand is "
Last Answer : The strong field ligand is " A. `SCN^(-)` B. `NO_(2)^(-)` C. `I^(-)` D. `S^(2-)`
Description : Which molecule/ion among the following cannot act as a ligand in complex compounds ?
Last Answer : Which molecule/ion among the following cannot act as a ligand in complex compounds ? A. `CH_(4)` B. `CN^(-)` C. `Br^(-)` D. `CO`
Description : Nickel `(Z=28)` combines with a uninegative monodentate ligand `X^(-)` to form a paramagnetic complex `[NiX_4]^(2-)`. The number of unpaired electron(
Last Answer : Nickel `(Z=28)` combines with a uninegative monodentate ligand `X^(-)` to form a paramagnetic complex ... C. one, square planar D. two, square planar
Description : (a) `[Ti(H_(2)O)_(6)]^(3+)` absorbs light of wavelength 5000Å. Name one ligand which would form a titanium (III) complex absorbing light to lower wave
Last Answer : (a) `[Ti(H_(2)O)_(6)]^(3+)` absorbs light of wavelength 5000Å. Name one ligand which would form a titanium (III) ... ^(3+)" " (iv) [Pd(en)_(2)]^(2+)`
Description : Which one is ambidentate ligand?
Last Answer : Which one is ambidentate ligand? A. `SO_(3)^(2-)` B. `CN^(-)` C. `NH_(3)` D. `H_(2)O`
Description : The lone pair of electrons at one of the ring nitrogens in the given amino acid makes a potential ligand, which is important in binding the iron atoms in hemoglobin: (A) Tryptophan (B) Threonine (C) Histidine (D) Serine
Last Answer : Answer : C
Description : Apolipoprotien B-100 acts as (A) Enzyme activator (B) Ligand for receptor (C) Both (A) and (B) (D) None of these
Last Answer : Answer : B
Description : Apolipoprotein A-I acts as (A) Enzyme activator (B) Ligand for receptor (C) Both (A) and (B) (D) None of these
Description : The apolipoprotein which acts as ligand for LDL receptor is (A) B-48 (B) B-100 (C) A (D) C
Description : What is an analyte or ligand ?
Last Answer : The substance whose concentration is to be determined is called as an analyte or ligand.
Description : The bond formed between the transition metal ion and ligand is ?
Last Answer : Co-ordination covalent bond Transitional metal Ions can form complex compounds by. By accepting the lone pair of electrons from ligand
Description : The following are true about the synaptic potential: a. the Na+ and K+ currents occurs simultaneously b. is a graded potential c. the channel is ligand-gated d. the post-synaptic potential is inhibitory when depolarizing
Last Answer : the Na+ and K+ currents occurs simultaneously
Description : G-proteins: a. are activated by the binding of an extracellular ligand to a membrane receptor b. can be mutated in tumour cells c. mediate the action of glucocorticoid hormone d. they are inactivated by cholera toxins
Last Answer : are activated by the binding of an extracellular ligand to a membrane receptor
Description : Receptors perform the following function/functions: A. Ligand recognition B. Signal transduction C. Both ligand recognition and signal transduction D. Disposal of agonists and antagonists
Last Answer : C. Both ligand recognition and signal transduction
Description : Using IUPAC norms write the formulae for the following: (a) Potassium trioxalatoaluminate (III) (b) Dichloridobis(ethane-l, 2-diamine) cobalt (III) -Chemistry
Last Answer : (a) K3[Al(C2O4)3] (b) [Co(Cl)2(en)2]+
Description : Using IUPAC norms write the formulae for the following: (a) Tris(ethane-1,2-diamine) chromium (III) chloride (b) Potassium tetrahydroxozincate(II) -Chemistry
Last Answer : a) [Cr(en)3] Cl3 (b) K2[Zn(OH)4]
Description : Name the following coordination compounds according to IUPAC system of nomenclature :(i) [Co(NH3)4 (H2O)Cl]Cl2 (ii) [CrCl2(en)2]Cl, (en = ethane – 1, 2 – diamine) -Chemistry
Last Answer : (i) [CO(NH3)4 (H2O)Cl]Cl2 Tetraammine aquachlorido cobalt (III) chloride (ii) [CrCl2(en)2]Cl Dichlorobis (ethane-1, 2-diamine) chromium (III) chloride
Description : A person having osteoporosis is suffering from lead poisoning. Ethlene diamine tetra acetic acid (EDTA) is administered for this condition. The best f
Last Answer : A person having osteoporosis is suffering from lead poisoning. Ethlene diamine tetra acetic acid (EDTA ... C. disodium salt D. calcium dihydrogen salt
Description : Formation of melanin from tyrosine requires the action of (A) Dopa decarboxylation (B) Diamine oxidase (C) Peroxidase (D) Tyrosinase
Last Answer : Answer : D
Description : The polymer obtained by the condensation of hexamethylene diamine and adipic acid is – (1) Nylon 66 (2) Terylene (3) Tollen's (4) Bakelite
Last Answer : (1) Nylon 66 Explanation: Polymers are very high molecular mass substances each molecule of which consists of very large number of simple structural units joined together though covalent bonds ... the repeating structural unit is derived from two monomer units - hexamethylenediamine and adipic acid.
Description : Nylon-66 is a polyamide of (A) Hexamethylene diamine and adipic acid (B) Adipic acid and methyl amine (C) Vinyl chloride and formaldehyde (D) None of these
Description : Which of the following is a polymer of Hexamethylene diamine and adipic acid? (A) Nylon-6 (B) Nylon-66 (C) Nylon-6, 10 (D) Epoxy resin
Last Answer : (B) Nylon-66
Description : In nylon-66, the first and second numbers (i.e., 6) respectively designate the number of carbon atoms present in the (A) Hexamethylene diamine and the ring (B) Hexamethylene diamine and the adipic acid (C) Adipic acid and the ring (D) None of these
Last Answer : (B) Hexamethylene diamine and the adipic acid
Description : Adipic acid reacts with hexamethylene diamine to form (a) Bakelite (b) Nylon-6,6 (c) Terylene (d) Nylon-6,8
Last Answer : Nylon-6,6
Description : Nylon-6,6 is obtained from : (a) Adipic acid and hexamethylene diamine (b) Tetrafluoroethylene (c) Vinyl cyanide (d) Vinylbenzene
Last Answer : Adipic acid and hexamethylene diamine
Description : In nylon-66, the first and second numbers (i.e., 6) respectively designate the number of carbon atoms present in the (A) Diamine and the ring (B) Dibasic acid and the ring (C) Diamine and the dibasic acid (D) None of these
Last Answer : (C) Diamine and the dibasic acid
Description : Nylon-6 is manufactured from (A) Caprolactam (B) Hexamethylene diamine and adipic acid (C) Hexamethylene diamine and Maleic anhydride (D) Hexamethylene diamine and Sebacic acid
Last Answer : (A) Caprolactam
Description : The polymer obtained by the condensation of hexamethylene diamine and adipic acid is : (1) Nylon 66 (2) Terylene (3) Tollen’s (4) Bakelite
Last Answer : Nylon 66
Description : The reaction between ethylene and bromine is an example of:
Last Answer : The reaction between ethylene and bromine is an example of: A. electrophilic additon B ... C. nucleophilic addition D. nucleophilic substitution
Description : A typical example of an exothermic reversible reaction conducted at high pressure in industry is (A) Dehydration of ethanol (B) Methanol synthesis (C) Reformation of methane (D) Polymerisation of ethylene
Last Answer : (A) Dehydration of ethanol
Description : An example of autothermal reactor operation is (A) Sulphur dioxide oxidation (B) Ethylene oxidation (C) Benzene oxidation (D) Ammonia synthesis
Last Answer : (B) Ethylene oxidation