Description : (xiv) Following equation represents a method of purification of nickel by `underset ("Impure")(Ni) + 4CO overset (320 K)rarr Ni(CO)_(4) overset(420 K)
Last Answer : (xiv) Following equation represents a method of purification of nickel by `underset ("Impure")(Ni) + ... Arkel B. Zone refining C. Mond D. Cupellation
Description : In the reaction sequence `underset(350^(@))overset(NaOH)rarr A overset(CH_(3)I)rarr B overset(HI)rarr C+D` ltbr. A, B, C, and D are given by the set :
Last Answer : In the reaction sequence `underset(350^(@))overset(NaOH)rarr A overset(CH_(3)I)rarr B overset(HI)rarr C+D` ltbr ... , `C_(6)H_(5)l, C_(2)H_(5)OH`
Description : A radioactive element `X`, decays by the sequence and with half-lives, given below, `X underset(30"min")overset(alpha)(rarr) Y underset(2"days")overse
Last Answer : A radioactive element `X`, decays by the sequence and with half-lives, given below, `X underset(30"min" ... D. The mass number of Y is greater than X
Description : In the given reaction `CH_(3)-CH_(2)-NH-CH_(2)-CH_(2)-CI overset((i)CH_(3)I ("excess"))underset((ii)AgOH//Delta)rarr[X]` is the major product, [X] wil
Last Answer : In the given reaction `CH_(3)-CH_(2)-NH-CH_(2)-CH_(2)-CI overset((i)CH_(3)I ("excess"))underset((ii)AgOH// ... of (a) and (b) D. `CH_(3) -CH_(2)-CI`
Description : In the given reaction sequence `C_(6)H_(5)-CH_(2)-NH_(2) overset(CHCl_(3)//Alc.KOH)underset(Delta)rarr [X] overset(H_(2)O //NaOH)rarr [Y],[Y]` will be
Last Answer : In the given reaction sequence `C_(6)H_(5)-CH_(2)-NH_(2) overset(CHCl_(3)//Alc.KOH)underset(Delta)rarr [X] ... -NH_(2)` D. `C_(6)H_(5)-CH_(2)OH`
Description : `CaOCl_(2)overset(Delta)underset(CoCl_(2))rarr`product, The product are
Last Answer : `CaOCl_(2)overset(Delta)underset(CoCl_(2))rarr`product, The product are A. `CaCl_(2)` B. `O_(2)` C. `Ca(ClO_(3))_(2)` D. All of these
Description : `underset(OH^(Ɵ))overset("Conc.")rarr` Incorrect statement (s) reagarding the reaction is/are:
Last Answer : `underset(OH^(Ɵ))overset("Conc.")rarr` Incorrect statement (s) reagarding the reaction is/are: ... . D. Reaction is an example of redox reaction
Description : `CH_(3) equiv C CH_(3) overset(Na, NH_(3) (i))(rarr) Q overset("dil. Cold")underset(KMnO_(4))(rarr) R` If Q is an unsaturated hydrocarbon then product
Last Answer : `CH_(3) equiv C CH_(3) overset(Na, NH_(3) (i))(rarr) Q overset("dil. Cold")underset(KMnO_(4))(rarr) R` If ... ii & iii B. i & ii C. only v D. only iv
Description : `X underset("ether")overset(Mg)rarrY underset(H^(+))overset("Dry " CO_(2))rarr X overset("hot " KMnO_(4))rarrP` The two isomeric compounds which will
Last Answer : `X underset("ether")overset(Mg)rarrY underset(H^(+))overset("Dry " CO_(2))rarr X overset("hot " KMnO_(4)) ... B. III and IV C. I and IV D. II and III
Description : `Ph-NO_(2) overset(Sn//HCl)rarr underset("HCl, " 0^(@)C-5^(@)C)overset(NaNO_(2))rarr underset(Ph-OH)overset("Basic medium")rarr "Product Y"` Find the
Last Answer : `Ph-NO_(2) overset(Sn//HCl)rarr underset("HCl, " 0^(@)C-5^(@)C)overset(NaNO_(2) ... report your answer as `underset(2)overset("Molecular weight")rarr`
Description : In the reaction, `C_(6)H_(5)NH_(2)underset(0-5^(@)C)overset(NaNO_(2)+HCl)rarr(A)underset(KCN)overset(CuCN)rarr(B)overset(H^(+)//H_(2)O)rarr(C)` the pr
Last Answer : In the reaction, `C_(6)H_(5)NH_(2)underset(0-5^(@)C)overset(NaNO_(2)+HCl)rarr(A)underset(KCN)overset(CuCN ... COOH` C. `C_(6)H_(5)OH` D. none of these
Description : `C_(6)H_(5)-CH_(2)-I overset(NaN_(3))underset(Delta)rarr` Products Reaction is assumed to involve nitrene as intermediate, then various possible produ
Last Answer : `C_(6)H_(5)-CH_(2)-I overset(NaN_(3))underset(Delta)rarr` Products Reaction is assumed to involve nitrene as ... (2)` C. `C_(6)H_(5)CN=NH` D.
Description : `overset(1.Br_(2)^(-)+KOH, Delta)underset(2.H_(3)O^(o+))rarr` The product of above reaction is:
Last Answer : `overset(1.Br_(2)^(-)+KOH, Delta)underset(2.H_(3)O^(o+))rarr` The product of above reaction is: A. B. C. D.
Description : The major end product (B) of the reaction: `overset(HCI)underset(ZnCl_(2))rarr A overset(1.NaCN("excess"))underset(2.H_(2),Ni)rarr B`
Last Answer : The major end product (B) of the reaction: `overset(HCI)underset(ZnCl_(2))rarr A overset(1.NaCN("excess"))underset(2.H_(2),Ni)rarr B` A. B. C. D.
Description : The product formed in the reaction is: `overset(1.LiAlH_(4))underset(2.H_(2)O)rarr`
Last Answer : The product formed in the reaction is: `overset(1.LiAlH_(4))underset(2.H_(2)O)rarr` A. B. C. `H_(3)C- ... )underset(|)(N)-(CH_(2))_(3) -CH_(2)OH`
Description : The major product (X) of the reaction is: `overset(H_(2),Ni)underset(Delta)rarr X`
Last Answer : The major product (X) of the reaction is: `overset(H_(2),Ni)underset(Delta)rarr X` A. B. C. D.
Description : `overset(1.Br_(2)(1"mole"), C CI_(4))underset(2.(CH_(3))_(2)NH("excess"))rarr A overset(1.CH_(3)I("excess"))underset(2.AgOH,Delta)rarr B` (Major produ
Last Answer : `overset(1.Br_(2)(1"mole"), C CI_(4))underset(2.(CH_(3))_(2)NH("excess"))rarr A overset(1.CH_(3) ... product) The major product (B) is: A. B. C. D.
Description : Consider the following sequence of reactions: `overset(C CI_(4))underset(Delta)rarr A overset(1.CH_(2)=CH-CH_(2)Br)underset(2.H_(3)O^(o+),Delta)rarrB`
Last Answer : Consider the following sequence of reactions: `overset(C CI_(4))underset(Delta)rarr A overset(1.CH_(2)=CH-CH_(2) ... end product (B) is: A. B. C. D.
Description : The major product formed in the reaction: `overset(p-TsOH("Trace"))underset(C_(6)H_(6).Delta)rarr`
Last Answer : The major product formed in the reaction: `overset(p-TsOH("Trace"))underset(C_(6)H_(6).Delta)rarr` A. B. C. D.
Description : `CH_(3)CH_(2)Br overset(AgCN)rarr A overset(NaOH, Delta)underset(overset(o+)(H_(3)O))rarrB,(B)` is:
Last Answer : `CH_(3)CH_(2)Br overset(AgCN)rarr A overset(NaOH, Delta)underset(overset(o+)(H_(3)O))rarrB,(B)` is: A. `CH_( ... (2)NH_(2)` C. `CH_(3)CH_(2)NH_(2)` D.
Description : `overset(HCI)underset((1"Mole"))rarr` Product
Last Answer : `overset(HCI)underset((1"Mole"))rarr` Product A. B. C. D.
Description : The intermediates obtained in the reaction `overset(NaN_(3))underset("Heat")rarr R-NH_(2)` are:
Last Answer : The intermediates obtained in the reaction `overset(NaN_(3))underset("Heat")rarr R-NH_(2)` are: A. `R-overset(O ... N=C=O` C. `R-CNO` D. none of these
Description : `CH_(3)-CH_(2)-CH_(2)-underset(OH)underset(|)(CH)-CH_(3) underset(-H_(2)O)overset(H^(o+))rarr[F] overset(Br_(2)//C Cl_(4))rarrC_(5)H_(10)Br_(2)(G)` Ho
Last Answer : `CH_(3)-CH_(2)-CH_(2)-underset(OH)underset(|)(CH)-CH_(3) underset(-H_(2)O)overset(H^(o+))rarr[F] ... (including all stereoisomers) A. 2 B. 6 C. 3 D. 5
Description : Phenol `underset("distillation")overset("Zinc")(rarr)(A)underset("conc."HNO_(3) "at 333K")overset("conc." HNO_(3))(rarr)(B)underset("NaOH")overset(Zn)
Last Answer : Phenol `underset("distillation")overset("Zinc")(rarr)(A)underset("conc."HNO_(3) "at 333K" ... -nitroaniline D. toluene, m-nitrobenzene and m-toulidine
Description : Cumene `underset((II)H_(2)O,H^(+))overset((i)O_(2))(rarr) (X)` and (Y) , (X) and (Y)respectively are `:`
Last Answer : Cumene `underset((II)H_(2)O,H^(+))overset((i)O_(2))(rarr) (X)` and (Y) , (X ... B. toluene, propylchloride C. phenol, acetone D. phenol, acetaldehyde
Description : `CH_(3)-underset(CH_(3))underset(|)CH-OCH_(3)overset(HI)underset(excess Delta)rarr` Which of the following is not formed in the above reaction ?
Last Answer : `CH_(3)-underset(CH_(3))underset(|)CH-OCH_(3)overset(HI)underset(excess Delta)rarr` Which of ... Isopropyl iodine C. Isopropyl alcohol D. All of these
Description : In the reaction `(CH_(3))_(3)C-O-CH_(2)CH_(3)+underset((1"mole"))(HI)overset(heat)(rarr)` the products formed is (are)
Last Answer : In the reaction `(CH_(3))_(3)C-O-CH_(2)CH_(3)+underset((1"mole"))(HI)overset(heat)(rarr)` the products ... (H)underset(|)O^(+)-CH_(2)CH_(3)I^(-)`
Description : `C_(2)H_(5)OH overset(KMnO_(4)//H^(oplus))rarrX underset(H_(2)SO_(4))overset(Y)rarr CH_(3)COOC_(2)H_(5)`, X and Y respectively are
Last Answer : `C_(2)H_(5)OH overset(KMnO_(4)//H^(oplus))rarrX underset(H_(2)SO_(4))overset(Y)rarr CH_(3)COOC_(2)H_(5)` ... CH_(3)COOH` D. `CH_(3)COOH, C_(2)H_(5)OH`
Description : `(CH_(3))_(2)CHOH overset("Mild")underset("oxidation[O]")rarr (X) overset((i)CH_(3)Mgl)underset((ii)"Hydrolysis")rarr (Y)` In the above sequence of re
Last Answer : `(CH_(3))_(2)CHOH overset("Mild")underset("oxidation[O]")rarr (X) overset((i)CH_(3)Mgl) ... Iso butylene C. sec. Butyl alcohol D. tert. Butyl alcohol
Description : `CH_(3) - underset(CH_(3))underset(|)(CH) - CH = CH_(2) overset("Reagent R")rarr` Alcohol Which is true about alcohol and R ?
Last Answer : `CH_(3) - underset(CH_(3))underset(|)(CH) - CH = CH_(2) overset("Reagent R")rarr` Alcohol Which is true about ... ) - CH_(2)CH_(3)` dil. `H_(2)SO_(4)`
Description : Which of the following is produced during the following reaction ? `CO(g)+H_(2)overset(575K)underset(ZnO,Cr_(2)O_(3))rarr` ……?
Last Answer : Which of the following is produced during the following reaction ? `CO(g)+H_(2)overset(575K)underset(ZnO,Cr_(2)O_ ... 3)COOH` C. `HCOOH` D. `CH_(3)OH`
Description : `CH_(3) - underset(OH)underset(|) overset(CH_(3))overset(|)(C) - CH_(3) underset("Cool") overset(NA_(2) Cr_(2)O_(7))rarr`?
Last Answer : `CH_(3) - underset(OH)underset(|) overset(CH_(3))overset(|)(C) - CH_(3) underset("Cool") overset(NA_(2) ... (3))overset(|)(C) - CH_(3)` D. No reaction
Description : Fill in the blanks by choosing the appropriate expression given in the brackets
Last Answer : Fill in the blanks by choosing the appropriate expression given in the brackets
Description : Correct options for the given below reaction: `Ph-OH overset((i) CHCl_(3)+OH^(-))underset((ii) H^(+)) to` Products
Last Answer : Correct options for the given below reaction: `Ph-OH overset((i) CHCl_(3)+OH^(-))underset((ii) H^(+)) to` Products A. B. C. D.
Description : Which of the following options best represents the enzyme composition of pancreatic juice? (a) Amylase, Pepsin, Trypsinogen, Maltase (b) Peptidase, Amylase, Pepsin, Rennin (c) Lipase, Amylase, Trypsinogen, Procarbo- xypeptidase (d) Amylase, Peptidase, Trypsinogen, Rennin
Last Answer : (c) Lipase, Amylase, Trypsinogen, Procarbo- xypeptidase
Description : Which of the following options best represents the enzyme composition of pancreatic juice ? (1) amylase, pepsin, trypsinogen, maltase (2) peptidase, amylase, pepsin, rennin (3) lipase, amylase, trypsinogen, procarboxypeptidase (4) amylase, peptidase, trypsinogen, rennin
Last Answer : (3) lipase, amylase, trypsinogen, procarboxypeptidase
Description : . In the given sequence, some letters are missing. Which of the given options can fill the blanks in the correct order from left to right? ab_ab_aaa_bbaaa_bbbb (1) abab (2) abba (3) aabb (4) baba
Last Answer : 2) abba
Description : Fill in the blanks with the appropriate option. When I was a small child, the importance of telling the truth was deeply ________ on my mind. (a) Waffled (b) Engendered (c) Impressed (d) Imbued
Last Answer : Ans:c) Impressed
Description : Fill in the blanks with the appropriate option. As the controversial argument continued, the debates became more _______ and their remarks became more ________ (a) Subdued, Hostile (b) Vehement, Acrimonious (c) Recticent, Cliche (d) affable, adverse
Last Answer : Ans: b) Vehement…Acrimonious
Description : Fill in the blanks with the appropriate option. Humanity is the __________ of a particular human being, but each individual has characteristics which __________ him from other persons. (a) Vagueness, Classify (b) Enigma, declassify (c) Progression, Isolate (d) Essence, Distinguish
Last Answer : Ans: d) Essence…Distinguish
Description : Fill in the blanks with the appropriate option. Each candidate claims to have a plan to ___________ the ___________ economy. (a) rejuvenate, sagging (b) Animate, flag (c) Restore, Upright (d) Create, bowed
Last Answer : Ans: a) rejuvenate…sagging
Description : Fill in the blanks with the appropriate option. With your ________ English skills, writing essays should be a ______ (a) Imperfect, task (b) Resourceful, gift (c) Impeccable, clinch (d) Qualified, reward
Last Answer : ANS: C) Impeccable…clinch
Description : Fill in the blanks with the appropriate option. The __________ inventor went from rags to ______ with one great idea. (a) Meticulous, pride (b) Prudent, capital (c) Credulous, fund
Last Answer : Ans: d) Sagacious, Riches
Description : Fill in the blanks with the appropriate option. She was already growing impatient, and _______ her foot, ready to cry at his not coming at once, when she heard the young man's ________ steps approaching ... slowly. (a) Stamped, Discreet (b) Kicked, Prudent (c) Trampled, Unobtrusive (d) Moved, Chary
Last Answer : Ans: a) Stamped, Discreet
Description : Fill in the blanks with the appropriate option. The steady ________ on Llewelyn's land began immediately by the royal officers, and in 1256 Llewelyn declared war. (a) Indulgence (b) Impingement (c) Encroachment (d) Approach
Last Answer : Ans: c) Encroachment
Description : Fill in the blanks with the appropriate option. The days of fun and _____ were gone for good. (a) Entertainment (b) Frolic (c) Hope (d) Distrust
Last Answer : Ans: b) Frolic
Description : Fill in the blanks with the appropriate option. In spite of heavy advertising, the new product only achieved _____________, sales. (a) disappointing (b) Spirit (c) Vapid (d) Humdrum
Last Answer : Ans: a) disappointing
Description : Fill in the blanks with the appropriate option. Bonaparte did so with forcefulness rarely possessed by that usually _______ creature, the moderate man. (a) Mediocre (b) Excellent (c) Exceptional (d) average
Last Answer : Ans: a) Mediocre
Description : Fill in the blanks with the appropriate option. _________ coal mines are in the vicinity, and there are manufactures of iron and steel, mill machinery, door and sash factories, etc., as well as several shipbuilding yards. (a) Intensive (b) Extensive (c) Substantial (d) Wideranging
Last Answer : Ans: b) Extensive
Description : Fill in the blanks with the appropriate option. Despite his wealth, the _________ millionaire refused to give any money to charity. (a) Parsimonious (b) Spendthrift (c) Vivacious (d) Sagacious
Last Answer : Ans: a) Parsimonious