Description : Hydrogen and chlorine react vigorously in the presence of light (explosively) due to the formation of (a) Hydrogen-free radicals (b) Chlorine-free radicals (c) Hydrogen chloride molecule (d) Both hydrogen- and chlorine-free radicals
Last Answer : Ans:(b)
Description : Chlorine free radicals react with methane by : (a) donating their free-radical electron to methane to form chloromethane. (b) abstracting a hydrogen atom from methane, and producing ... produce chloromethane. (d) forming a carbonium ion intermediate that rapidly dissociates to form chloromethane
Last Answer : abstracting a hydrogen atom from methane, and producing HCl and a methyl radical
Description : When radiation breaks an electron pair bond in a molecule and each fragment of the molecule gets one of the bond electrons, the molecular fragments that are formed are called: w) ions x) free radicals y) stable molecules z) gases
Last Answer : ANSWER: X -- FREE RADICALS
Description : What is an incompatible electron ? What is an unpaired electron ?
Last Answer : The electrons in the outermost energy of the element that participate in bonding are called twin or bonding electrons , and the rest are called unpaired electrons or free-pair electrons.
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 : Find the number of unpaired electron in the fully excited xenon atom.
Last Answer : Find the number of unpaired electron in the fully excited xenon atom.
Description : Which of the following statements is correct regarding nucleophiles? (a) They have an overall positive charge (b) They have a lone-pair of electrons (c) They have an unpaired electron (d) They have empty orbitals
Last Answer : (b) They have a lone-pair of electrons
Description : Are "mines" a fitting metaphor for "free radicals"?
Last Answer : I would think of free radicals as a rusting of the body.
Description : Arrange the following free radicals in increasing order of stability:
Last Answer : Arrange the following free radicals in increasing order of stability:
Description : (A) Carbenes act as free radicals. (R) Only triplet carbenes act as biradical (divalent free radical).
Last Answer : (A) Carbenes act as free radicals. (R) Only triplet carbenes act as biradical (divalent free radical). A. ... IF (A) is incorrect but (R) is correct.
Description : Arrange the following free radicals in order of decreasing stability: Methyl(I), Vinly(II), Allyl(III), Benzyl(IV)
Last Answer : Arrange the following free radicals in order of decreasing stability: Methyl(I), Vinly(II), Allyl(III), Benzyl(IV) ... gt III D. IV gt III gt I gt II
Description : The increasing order of stability of the following free radicals is :
Last Answer : The increasing order of stability of the following free radicals is : A. `(CH_(3))_(2)overset(.)CHlt(CH_(3)) ... (.)Clt(C_(6)H_(5))_(2)overset(.)CH`
Description : Which of the following orders regarding relative stability of free radicals is correct?
Last Answer : Which of the following orders regarding relative stability of free radicals is correct? A. `3^(@)lt2^(@)lt1^(@)` B. ... (@)` D. `3^(@)gt2^(@)lt1^(@)`
Description : Which of the following statement(s) is/are true concerning ischemia reperfusion injury? a. During ischemia, ATP degradation results in increased plasma and intracellular levels of ... immunization with antibodies to neutrophil adhesive complex lessen the ischemic/reperfusion microvascular injury
Last Answer : Answer: a, b, c, d During the ischemia and hypoperfusion phase, degradation of ATP stores essential to maintain cell integrity and significant loss of diffusible ... either the neutrophil adhesive complex or the endothelial selectins dramatically lessens ischemia/reperfusion microvascular injury
Description : Answer: a, b, c, d Free oxygen radicals are chemical species that are intermediates in the normal process of cellular respiration. Oxidants that are free radicals have been implicated as initiators of ... a. C-reactive protein b. Serum amyloid c. a -Proteinase inhibitor d. Fibrinogen e. Albumin
Last Answer : Answer: a, b, c, d The acute-phase response is a series of homeostatic responses of the organism to tissue injury in infection and inflammation. After an inflammatory stimulus occurs, a number ... 30% to 50% of the level before injury. The reason for the decrease in production is poorly understood
Description : Antioxidants help a person maintain good health because they (a) prevent the vitamins deficiency. (b) prevent excessive oxidation of glucose and other carbohydrates. (c) neutralise the free radicals ... metabolism. (d) activate certain genes in the body cells which help delay the ageing process.
Last Answer : Ans:(c)
Description : Fermentation is a process of decomposition of an organic compound by (1) catalysts (2) enzymes (3) carbanions (4) free radicals
Last Answer : (2) enzymes Explanation: Fermentation in food processing typically is the conversion of carbohydrates to alcohols and carbon dioxide or organic acids using yeasts, bacteria, or a combination there ... to lactic acid. Alcoholic fermentation follows the same enzymatic pathway for the first 10 steps.
Description : Addition polymerisation takes place either by a free radical mechanism or ionic mechanism depending on the reagents used. Free radical polymerisation is catalyzed by __________, which decompose to give free radicals. (A) Organic peroxides (B) Sulphuric acid (C) Hydrofluoric acid (D) None of these
Last Answer : (A) Organic peroxides
Description : H2O2 is precursor of A A. free radicals B. Enzyme C. Both D. None of these
Last Answer : free radicals
Description : Cell membrane damage can occur by C A. free radicals B. Phopholipase C. all of above D. None of these
Last Answer : all of above
Description : Characteristic reactions of aromatic hydrocarbons are initiated by (a) Electrophiles (b) Nucleophiles (c) Free radicals (d) Uncharged molecules
Last Answer : Electrophiles
Description : An aqueous solution of glycine is neutral because of the formation of : (a) Carbanion (b) Zwitterion (c) Carbonium ions (d) Free radicals
Last Answer : Zwitterion
Description : The mechanism of dehydration of an alcohol to give an ether involves formation of : (a) Carbonium ions (b) Carbanions (c) Free radicals (d) Carbenes
Last Answer : Carbonium ions
Description : The mechanism of dehydration of an alcohol to give an alkene involves formation of : (a) Carbonium ions (b) Carbanions (c) Free radicals (d) Carbenes
Description : In the chlorination of alkanes, the first step in which chlorine free radicals are produced is called : (a) initiation (b) activation (c) propagation (d) deactivation
Last Answer : initiation
Description : Homolytic fission of covalent bond between carbon atoms will produce : (a) Two carbonium ions (b) Two molecules (c) Free radicals (d) Carbonium ion and carbanion
Last Answer : Free radicals
Description : Homolytic fission of C–C bond leads to the formation of : (a) Free radicals (b) Carbonium ions (c) Carbanions (d) None of these
Description : Fermentation is a process of decomposition of an organic compound by : (1) catalysts (2) enzymes (3) carbanions (4) free radicals
Last Answer : enzymes
Description : What is the number of unpaired electrons in carbon atom? -General Knowledge
Last Answer : The answer is '2'
Last Answer : answer:
Description : In human the unpaired male reproductive structure is
Last Answer : In human the unpaired male reproductive structure is A. Testis B. Seminal vesicle C. Bulbourethral gland D. Prostate
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 : s-1: `[MnCl_(6)]^(3),[FeF_(6)]^(3-)` and `[CoF_(6)]^(-3)` are paramagnetic having four, five and four unpaired electrons respectively. S-2: Valence bo
Last Answer : s-1: `[MnCl_(6)]^(3),[FeF_(6)]^(3-)` and `[CoF_(6)]^(-3)` are paramagnetic having four, five and ... onn the metal ion. A. TTT B. TFT C. FTF D. TFF
Description : The number of unpaired electrons present in complex ion `[FeF_(6)]^(3-)` is:
Last Answer : The number of unpaired electrons present in complex ion `[FeF_(6)]^(3-)` is: A. 5 B. 4 C. 6 D. 0
Description : The number of unpaired electrons in `d^(6)`, low spin, octahedral complex is :
Last Answer : The number of unpaired electrons in `d^(6)`, low spin, octahedral complex is : A. 4 B. 2 C. 1 D. 0
Description : The hybridisation and unpaired electrons in `[Fe(H_(2)O)_(6)^(2+)]` ion are :
Last Answer : The hybridisation and unpaired electrons in `[Fe(H_(2)O)_(6)^(2+)]` ion are : A. `sp^(3)d^(2)`,4 B. `d^(2)sp^ ... . `d^(2)sp^(3)`,4 D. `sp^(3)d^(2),2`
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 : Number of unpaired electrons in inert gas is
Last Answer : Number of unpaired electrons in inert gas is A. Zero B. 8 C. 4 D. 18
Description : In `S_(2)` molecule the two unpaired electrons are present in
Last Answer : In `S_(2)` molecule the two unpaired electrons are present in A. `pi` B. `pi^(**)` C. `sigma` D. `sigma^(**)`
Description : In the Lewis symbol for a fluorine atom there are paired and unpaired electrons.?
Last Answer : Yes. That is true. There are 3 pairs of electrons, and 1 loneunpaired electron.
Description : How many unpaired electrons in indium?
Last Answer : One (1)
Description : How many unpaired electrons are present in iron?
Last Answer : Feel Free to Answer
Description : How many unpaired electrons does barium have?
Last Answer : What is the answer ?
Description : How many unpaired electrons are present in each atom of phosphorus?
Last Answer : Three unpaired electrons are present in each atom ofphosphorus.
Description : Which of the following is not characteristic of resonance? (a) The canonical structures have the constituent atoms in the same relative positions (b) They have nearly the same energy (c) ... of unpaired electrons (d) The actual structure can be represented on paper using the conventional symbols
Last Answer : Ans:(d)
Description : How is paramagnetic character of a compound is related to the no. of unpaired electrons?
Last Answer : Ans. Greater the number of unpaired electrons greater will be the paramagnetic character
Description : Anticodon is an unpaired triplet of bases in an exposed position of (a) tRNA (b) mRNA (c) rRNA (d) both (b) and (c).
Last Answer : (b) mRNA
Last Answer : tRNA
Description : What is the name given to a substance with one or more unpaired electrons?
Last Answer : ANSWER: FREE RADICAL