List three reagents for converting a carboxylic acid to its acyl chloride. Select the most convenient of the three reagents. Give a reason for the choice. ?
1 Answers
Talk Doctor Online in Bissoy App
Assertion : Oxidation of glucose by `Br_(2)` water gives gluconic acid. Reason : `Br_(2)` water oxidises both -CHO and -OH groups.
Correct Answer - C Correct reason. `Br_(2)` water oxidises -CHO groups to -COOH group.
2 Answers 1 views
Match order of the reaction (in List-I) with the corresponding rate constant (in List II). `{:("List I (order)","List II (rate constant)"),((A)"Zero",
Correct Answer - A-r; B-s ; C-q; D-p Zero order x=kt First order `K=1/t"In"a/(a-x)` Second order `K=1/t[1/(a-x)-1/a]` Third order `K=1/(2t)[1/(a-x)^2-1/a^2]`
2 Answers 2 views
Match List I and List II and select the correct answer using the code given below the lists : `{:("List-I","List-II"),((A)FeS_2toFe^(+3)+SO_2,(p)M//20
Correct Answer - A `(A)tos " " (B)to p " " ( C)toq " " (D)tos` Equivalent mass = molar mass / No of electrons lost or gained by 1 molecule.
2 Answers 1 views
Match List I with List II and select the correct answer using the code given below the lists : `{:("List-I","List-II"),((A)"For ionic solid"r_+/r_(-)=
Correct Answer - A`to`s ; B`to`p ; C`to`q ; D`to` r `0.225 le r_+/r_- lt 0.414 " " "Cation is in tetrahedral void" " " 0.732 le r_+/r_- lt 1` cubical...
2 Answers 1 views
Statement-1:Sodium chloride is added during electrolysis of fused anhydrous magnesium chloride. Statement-2:Anhydrous magnesium chloride is obtained b
Correct Answer - C S-1:It lowers the fusion temperature of `MgCl_2` and provide conductivity to the elecrolyte. S-2: `MgCl_2. 6H_2O` is calcined in a stream of dry HCl gas to have...
2 Answers 1 views
Different reagents used for the identification of different functional groups. Eg. (i)Tollens reagent used for the identification of -CHO, etc. (ii)CA
Correct Answer - C When CAN react with R-OH there is no redox. `C_4H_9OH+underset("CAN (a yellow solid)")((NH_4)_2[Ce(NO_3)_6])to[Ce(NO_3)_5(n-C_4H_9O)]^(2-)` Wine red complex `NH_4^+` ion present as spectators and so not partcipate.
2 Answers 1 views
Match List I with List II and select the correct answer using the code given below the lists `:` `{:("List-1",,,"List"-II),((a)"Argentite",,,"(1)Halid
Correct Answer - A Argentite `toAg_2S` , Cuprite`toCu_2O`, Siderite `toFeCO_3` , Carnalite `toKCl.MgCl_2. 6H_2O`
2 Answers 1 views
Some question (Assertion-Reason type) are given below. Each question contains STATEMENT-1(Assertion) and STATEMENT-2(Reason) . Each question has 4 cho
Correct Answer - D A body can float into liquid even if the density of liquid is less then the density of solid.
2 Answers 1 views
When the following aldohexose exists in its D-configuration, the total number of stereoisomers in its pyranose form, is `{:(CHO),(|),(CH_(2)),(|),(CHO
Correct Answer - `8`
2 Answers 1 views
The seas and oceans are the most convenient natural medium of transport.
The seas and oceans are the most convenient natural media of transport because- 1. Sea or ocean transport is used for both passengers and goods transport. 2. The most important aspect of...
2 Answers 1 views