The order of equivalent conductances at infinite dilution for LiCl, NaCl and KCl is
LiCl > NaCl > KCl
KCl > NaCl > LiCl
NaCl > KCl > LiCl
LiCl > KCl > NaCl
Compound X is tested and the results are shown in the table.
Test | Result |
Aqueous sodium hydroxide is added, then heated gently. | Gas given off which turns damp red litmus paper blue |
Dilute hydrochloric acid is added. | Effervescence, gas given off which turns lime water milky and acidified K2Cr2O7, paper green. |
Which ions are present in compound X?
Ammonium ions and sulphite ions
Ammonium ions and carbonate ions
Sodium ions and carbonate ions
Ammonium ions and sulphate ions
Amongst the following compounds, the one that wil not respond to Cannizzaro reaction upon treatment with alkali as
Cl3CCHO
Me3CCHO
C6H5CHO
HCHO
A.
Cl3CCHO
For a carbonyl group to give Cannizaro reaction, it should not have an -hydrogen atom. Among the given compound Me3CCHO, C6H5CHO and HCHO respond to Cannizaro reaction but Cl3CCHO do not due to following reason.
When hydroxyl group attacks the carbonyl group a tetrahedral intermediate forms. This tetrahedral intermediate will revert to a carbonyl compound by expelling the best leaving group. The carbonium is resonance stabilised therefore it is better leaving group than OH. These initial products exchange a proton to give ion of carboxylic acid and trichloromethane (CHCl3).
Which of the following compounds would not react with Lucas reagent at room temperature?
C6H5CH2OH
CH3CH2CH2OH
(CH3)3COH
Amongst the following compounds, the one which would not respond to iodoform test is
CH3CH(OH)CH2CH3
ICH2COCH2CH3
CH3COOH
CH3CHO
Which of the following reaction will not result in the formation of carbon - carbon bonds?
Cannizzaro reaction
Wurtz reaction
Reimer-Tiemann reaction
Friedel-Crafts acylation
Amongst the following compounds, the one(s) which readily react with ethanolic KCN.
Ethyl chloride
Chlorobenzene
Benzaldehyde
Salicylic acid