A: Secondary amines and phenols undergo Liebermann nitroso reaction. R: Secondary amines are move basic than primary amines.

A primary key is a field that identifies each record in a database table admitting that the primary key must contain its UNIQUE values.  A secondary key shows the secondary value...

A) force increases, friction increases

Answer is (C) Man

1. Primary productivity - productivity at producer level  2. Secondary productivity – productivity at consumer level

1. Primary Lymphoid organs: Bone marrow and thymus. 2. Secondary Lymphoid organs: Spleen, lymph nodes, Peyer’s patches (small intestine) and mucosal associated lymphoid tissues (MALT).

Primary treatment involves the removal of large sized floating and suspended solids by physical methods, while secondary treatment involves decomposition of organic matter by microbial action.

(iii) Assertion is correct statement but reason is wrong statement. 

(iii) Assertion is correct statement but reason is wrong statement.

The rate of succession is much faster in secondary succession as the substratum (soil) is already present as compared to primary succession where the process starts from a bare area...

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