This section includes 7 InterviewSolutions, each offering curated multiple-choice questions to sharpen your Current Affairs knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Reaction of ammonia gas with excess of dichlorine gas produces .......... and ..........products. |
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Answer» `NCl_(3), H_(2)` |
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| 2. |
Reaction of aniline with benzaldehyde is |
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Answer» polymerisation
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| 3. |
Reaction of alkyl halides with aromatic compounds in presence of anhydrous AlCl_(3) is known as |
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Answer» Friedal-Craft reaction `underset("BENZENE")(C_(6)H_(6))+underset("CHLORO methane")(CH_(3)Cl) underset(AlCl_(3))overset(DRY)to underset("Toluene")(C_(6)H_(5)CH_(3))+HCl` |
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| 4. |
Reaction of aldehyde with NH_(2) - OH will be fastest at which of the following P_(H) |
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Answer» 1 |
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| 5. |
Reaction of Alcohol with carboxylic acid in presence of acid catalyst is known as …….. reaction. |
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Answer» Fermentation |
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| 6. |
Reaction of acetone with one of the following reagents involves nucleophilic additionfollowed by elimination of water . The reagent is |
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Answer» grignard reagent |
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| 7. |
Reaction of acetamide with bromine water and KOH gives: |
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Answer» `CH_(3)COOH` |
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| 8. |
The reaction of acetamide with bromine and caustic potash or NaOBr gives : |
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Answer» ETHANE |
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| 9. |
Reaction of acetaldehyde with HCN followed by hydrolysis gives a compound which shows |
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Answer» Optical isomerism |
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| 10. |
Reaction of acetaldehyde withNH_(2)OH will be fastest at which of the following pH? |
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Answer» 1 |
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| 11. |
Reaction of (AAK_MCP_37_NEET_CHE_E37_012_Q01)with HI (one mole) leads to the formation of which one of the following as major product? |
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Answer»
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| 12. |
Reaction of a compound with conc. KOH gives methanol and potassium formate.Name the compound. |
| Answer» SOLUTION :METHANAL | |
| 13. |
Reaction of a carbonyl compound with one of the following reagents involves nucleophilicaddition followed by elimination of water. The reagent is |
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Answer» hydrazine in presence of feebly ACIDIC solution |
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| 14. |
Reaction I^(st) and II^(nd) are |
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Answer» Both `S_(N)` 1 |
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| 15. |
Reaction involving carbanion formation is/are: |
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Answer» CANNIZZARO's reaction |
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| 16. |
Reaction invoiving anti addition is |
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Answer» `CH_(2) = CH_(2) overset(H//H_(2)O)to` |
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| 17. |
Reaction intermediate in hydration of alkene is |
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Answer» carbanion |
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| 18. |
Reactioninvolving antiaddition is |
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Answer» `CH_(2)=CH_(2) overset(H^(+)//H_(2)O)(to)` |
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| 19. |
Reaction involved during conversion of 3^(@) alkyl amine to 3^(@) nitro alkane |
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Answer» HYDROLYSIS |
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| 20. |
Reaction in which yield of prodict will increase with increase in pressure is |
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Answer» `H_(2(G))+I_(2(g))hArrHI_((g))` Volume is decreasing in forward direction so on increasing pressure the YIELD of product will increase. |
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| 21. |
Reaction intermediate formed in the formation of salicylaldehyde from phenol (Reimer-Tiemann reaction) is |
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Answer» Carbocation |
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| 22. |
Reaction I : CH_(3)CH_(2)-underset(+N(CH_(3))_(3)OH^(-))(CH-CH_(3))overset("heat")to Product Reaction II : CH_(3)CH_(2)-underset(Br)underset(|)CH-CH_(3)overset(CH_(3)ONa)to Product Products are CH_(3)-CH=CH-CH_(3)(X) CH_(3)CH_(2)CH=CH_(2)(Y) |
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Answer» The major product in reaction 1 is (X) |
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| 23. |
Reaction,H_(2)(g)+I_(2)(g)rarr2HI(g)DeltaH=-12.40 kcal.According to this, the heat of formation of HI will be |
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Answer» 12.4 KCAL Hence `DeltaH_(F)^(@)(HI)=-12.40//2=-6.20 kcal`. |
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| 24. |
Reaction given below is an example of (AAK_MCP_37_NEET_CHE_E37_036_Q01) |
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Answer» Wolff-Kishner reduction |
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| 25. |
Reaction given in passage is spontaneous because |
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Answer» NaOH formed is IONIC |
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| 26. |
Reaction : CH_(3)OH+O_(2) underset(Ag)overset(600^(@))to productThe product is |
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Answer» `CH_(2)=C=O` |
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| 27. |
Reaction CH_(3)COOH+C_(2)H_(5)OH to CH_(3)COOC_(2)H+H_(2)O is an illustration of |
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Answer» dehydration `CH_(3) COOH + C_(2) H_(5)OH UNDERSET(Delta) OVERSET(CONC. H_(2)SO_(4)) HARR CH_(3)COOC_(2)H_(5)+H_(2)O`. Thus in this reaction , an ester `(CH_(3)COOHC_(2)H_(5))` is formed . This process is called esterfication . |
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| 28. |
Reaction : Cu_(("solid"))+2Ag_(("aqueous"))^(+) to Cu_(("aqueous"))^(2+)+2Ag_(("Solid")), what is the equilibrium constant for this reaction ? (E^(@)=0.46V" at "298K Temperature). |
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Answer» `2.0xx10^(10)` `therefore 0.46=(0.0591)/(2)logK_(c)` `therefore logK_(c)=(2xx0.46)/(0.0591)=15.57` or `K_(c)="Antilog "15.57` `=3.7xx10^(15)~~4xx10^(15)`. |
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| 29. |
Reaction favoured by low pressure is : |
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Answer» `H_2 + I_2 ⇌ 2HI` |
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| 30. |
Reaction, CH_3CNO_2 overset rarrgives : |
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Answer» `CH_3Br` |
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| 31. |
Reaction by which benzaldehyde cannot be prepared , is |
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Answer» GATTERMAN - KOCH synthesis group
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| 32. |
Reaction by which benzaldehyde cannot be prepared is |
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Answer»
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| 33. |
Reaction by which benzaldehyde cannot be prepared |
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Answer»
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| 34. |
Reaction by which benzaldehyde cannot be prepared : |
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Answer»
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| 35. |
Reaction between solution of phenol in aq.sodium hydroxide and halo alkane will give ether, what is the name of this process of ether preparation ? |
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Answer» WILLIAMSON's SYNTHESIS |
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| 36. |
Reaction between NO and O_(2)" to form "NO_(2)" is "2NO + O_(2) rarr2NO_(2) follows the following mechanism No + No k-1 N_(2) O_(2) (in rapid equilibrium) N_(2)O_(2) + O_(2) overset(k_(2))rarr 2NO_(2) (slow) Show that the rate of reaction is given by (1)/(2) ((d[NO_(2)])/(dt))=K[NO]^(2)[O_(2)] |
| Answer» SOLUTION :To PROVE | |
| 37. |
Reaction between sodium ethoxide and bromoethane forms |
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Answer» ETHYL METHYL ether |
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| 38. |
Reaction between Grignard's reagent and cyanogen chloride gives : |
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Answer» ALKANE nitrile |
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| 39. |
Reaction between ethyl bromide and aqueous KOH follows which order kinetics |
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Answer» ZERO ORDER `C_2H_5Br + KOHaq to C_2H_5OH + KBR` proceeds by `SN^(2)` mechanism, i.e., it is a second order reaction. |
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| 40. |
Reaction between barium chloride and sodium sulphate goes to completion bacause |
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Answer» barium SULPHATE is ALMOST INSOLUBLE |
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| 41. |
Calculate the heat of hydrogenation , C_(2)H_(4)(g)+H_(2)(g)toC_(2)H_(6)(g) Given that, the heats of combustion of ethylene, hydrogen and ethane are -337.0, -68.4 and -373.0 kcal respectively. |
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Answer» `-32.4` KCAL |
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| 42. |
Reaction : A to B follows zero order kinetics and initial concentration of A is 0.01M. If concentration of A is 0.008 M after 10 min, calculate half-life (in minute). |
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Answer» |
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| 43. |
Reaction between an acid and alcohol will give |
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Answer» HIGHER C CONTAINING acid |
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| 44. |
Reaction A to B carried out inside a container.Concentration varies as C_t=a+bt.Rate of reaction can be expressed in term of pressure at temp T=300 K, Take b=4, R=1/12 atm mol^(-1) k^(-1) Give your Answer divide by 10. |
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Answer» `C_1=a+bt` p=(a+bt)RT `(DP)/(dt)=dRT " " =4xx1/12xx300=100 "atm" SEC ^(-1)` |
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| 45. |
Reaction A+BrarrC+D 38 kcal has activation energy 20 kcal. Activation energy for reaction, C+DrarrA+B is |
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Answer» 20 kcal `(E_a)_f`=20 kcal as `DeltaH=(E_a)_f-(E_a)_b` `-38=20-(E_a)_b` `THEREFORE (E_a)_b`=20+38=58 kcal |
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| 46. |
Reaction A+B rarr C +D+38kcal has activation energy 20 kcal . Activation energy for reaction C+D rarr A+B is : |
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Answer» 20 kcal ` =DeltaE +E_(a)` (FORWARD ) = 38 +20 = 58 kcal |
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| 48. |
Reaction, |
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Answer» ELECTROPHILIC substitution |
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| 49. |
Reaction 3ClO^(-)toClO_(3)^(-)+2Cl^(-) occurs in following two steps. (i)ClO^(-)+ClOoverset(K_(1))toClO_(2)^(-)+Cl^(-) (Slow step) (ii)ClO_(2)^(-)+ClO^(-)overset(K_(2))toClO_(3)^(-)+Cl^(-)(Fast step) Then the rate of given reaction =........ |
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Answer» `K_(1)[CL^(-)]^(2)` |
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| 50. |
Reaction : - 3ClO^(-)toClO_3^(-) +2Cl^(-)occursinfollowingtwosteps (i)2ClO^(-)rightarrow ClO_(2)^(-) +Cl^(-)( slow step ) (ii)ClO_(2) ^(-)+ClO^(-)overset(K_(2)) toClO_(3)^(-)+Cl^(-)( fast step) thentherateofgivenreaction- ______. |
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Answer» `K_(1)[CLO^(-) ]^(2)` |
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