
(A) COCl₂: This is phosgene, which is used to distinguish between primary, secondary, and tertiary amines by forming amides with primary amines, imides with secondary amines, and no reaction with tertiary amines. This corresponds to (I).
(B) SOCl₂: This is thionyl chloride, which is a poisonous gas and is commonly used for chlorinating alcohols or converting amides to acyl chlorides. This corresponds to (II).
(C) NH₂SO₃H: This is sulphamic acid, which is involved in the synthesis of primary amines through reactions like reduction. This corresponds to (III).
(D) C₆H₅NH₂: This is aniline, which forms a zwitter ion (a molecule with both positive and negative charges) in certain conditions. This corresponds to (IV).
Thus, the correct matching is Option B.
Among the following statements, choose the correct statements.
Choose the correct answer from the options given below:
Atoms of element B form hcp lattice and those of the element A occupy 2/3 rd of tetrahedral voids. What is the formula of the compound formed by the elements A and B?
Among the following statements related to ionic conductance. choose the correct statements.
Choose the correct answer from the options given below:
Select the statements that are CORRECT regarding patterns of biodiversity.
Which of the following hormone is not produced by placenta ?
List - I | List - II | ||
| A | Streptokinase | I | Blood-Cholestrol lowering agents |
| B | Cyclosporin | II | Clot Buster |
| C | Statins | III | Propionibacterium sharmanii |
| D | Swiss Cheese | IV | Immuno suppressive agent |
Which of the following option determines percolation and water holding capacity of soils ?