Aryl diazonium salts are very good synthetic reagents that can be used for the preparation of a wide variety of organic compounds
What is coupling reaction? Give one example.

Aryl diazonium salts are very good synthetic reagents that can be used for the preparation of a wide variety of organic compounds Why are aryl diazonium ions more stable than alkyl diazonium ions ?

We know that sequence got by starting with any number and adding a fixed number repeatedly is called an arithmetic sequence.Example: 1,3,5,7,........ Like this we can form sequences by starting with any number and multiplying by a fixed non-zero number repeatedly. For example 1,2,4,8.......... In this sequence, one number multiplied by 2 gives the next number. Such sequences are called geometric sequences. The common number used for repeated multiplication is called common ratio. What is the common ratio of the geometric sequence 3,12,48,.....?

We know that sequence got by starting with any number and adding a fixed number repeatedly is called an arithmetic sequence.Example: 1,3,5,7,........ Like this we can form sequences by starting with any number and multiplying by a fixed non-zero number repeatedly. For example 1,2,4,8.......... In this sequence, one number multiplied by 2 gives the next number. Such sequences are called geometric sequences. The common number used for repeated multiplication is called common ratio. What is the 5^(th) term of the geometric sequence 1,2,4,8,........?

0.75 mole of solid A_(4) and 2 moles of gaseous O_(2) are heated in a sealed vessel, completely using up the reactants and producing only one compound. It is found that when the temperature is reduced to the initial temperature, the contents of the vessel exhibit a pressure equal to half the original pressure. What conclusions can be drawn from these data about the product of the reaction?

Biocontrol is the best alternative for chemical control. Give one example for organisms that can be used as biocontrol agents pests.

How will you prepare the following compounds from benzene? You may use any inorganic reagent and any organic reagent having not more than one carbon atom, i. MethyI benzoate ii. m -Nitrobenzoic. acid iii. p-Nitrobenzoic' acid iv: Phenýlacetic acid v. p-Nitrobenzaldehydè.