Advertisements
Advertisements
How will you bring out the following conversion?
Concept: undefined >> undefined
How will you carry out the following conversion?
Concept: undefined >> undefined
Advertisements
How will you carry out the following conversion?
Concept: undefined >> undefined
How will you carry out the following conversions?
Concept: undefined >> undefined
How will you carry out the following conversions?
Concept: undefined >> undefined
Match the reactions given in Column I with the statements given in Column II.
| Column I | Column II | ||
| (i) | Ammonolysis | (a) | Amine with lesser number of carbon atoms |
| (ii) | Gabriel phthalimide synthesis | (b) | Detection test for primary amines. |
| (iii) | Hoffmann Bromamide reaction | (c) | Reaction of phthalimide with \[\ce{KOH}\] and \[\ce{R-X}\] |
| (iv) | Carbylamine reaction | (d) | Reaction of alkylhalides with \[\ce{NH3}\] |
Concept: undefined >> undefined
Assertion: Hoffmann’s bromamide reaction is given by primary amines.
Reason: Primary amines are more basic than secondary amines.
Concept: undefined >> undefined
Assertion: Only a small amount of \[\ce{HCl}\] is required in the reduction of nitro compounds with iron scrap and \[\ce{HCl}\] in the presence of steam.
Reason: \[\ce{FeCl2}\] formed gets hydrolysed to release \[\ce{HCl}\] during the reaction.
Concept: undefined >> undefined
Assertion: Aromatic 1° amines can be prepared by Gabriel Phthalimide Synthesis.
Reason: Aryl halides undergo nucleophilic substitution with anion formed by phthalimide.
Concept: undefined >> undefined
Sucrose (cane sugar) is a disaccharide. One molecule of sucrose on hydrolysis gives ______.
Concept: undefined >> undefined
Which of the following statements is not true about glucose?
Concept: undefined >> undefined
Carbohydrates are classified on the basis of their behaviour on hydrolysis and also as reducing or non-reducing sugar. Sucrose is a:
(i) monosaccharide
(ii) disaccharide
(iii) reducing sugar
(iv) non-reducing sugar
Concept: undefined >> undefined
How do you explain the presence of all the six carbon atoms in glucose in a straight chain?
Concept: undefined >> undefined
In nucleoside a base is attached at 1′ position of sugar moiety. Nucleotide is formed by linking of phosphoric acid unit to the sugar unit of nucleoside. At which position of sugar unit is the phosphoric acid linked in a nucleoside to give a nucleotide?
Concept: undefined >> undefined
Under what conditions glucose is converted to gluconic and saccharic acid?
Concept: undefined >> undefined
Which sugar is called invert sugar? Why is it called so?
Concept: undefined >> undefined
During curdling of milk, what happens to sugar present in it?
Concept: undefined >> undefined
How do you explain the presence of five – OH groups in glucose molecule?
Concept: undefined >> undefined
How do you explain the presence of an aldehydic group in a glucose molecule?
Concept: undefined >> undefined
Which of the following are characteristics of thermosetting polymers?
(i) Heavily branched cross linked polymers.
(ii) Linear slightly branched long chain molecules.
(iii) Become infusible on moulding so cannot be reused.
(iv) Soften on heating and harden on cooling, can be reused.
Concept: undefined >> undefined
