Chemistry

The mechanism of action of "Terfenadine" (Seldane) is :

The mass of ammonia in grams produced when 2.8 kg of dinitrogen quantitatively reacts with 1 kg of dihydrogen is

The one that can exhibit highest paramagnetic behaviour among the following is: gly = glycinato ; bpy = 2,2 '-bipyridine

If 75% of a first order reaction was completed in 90 minutes, 60% of the same reaction would be completed in approximately (in minutes)
(Take: log 2 = 0.30; log 2.5 = 0.40 )

A sample of red ink (a colloidal suspension) is prepared by mixing eosine dye, egg white, HCHO and water. The component which ensures stability of the ink sample is :

At 300 K, the vapour pressure of a solution containing 1 mole of n-hexane and 3 moles of n-heptane is 550 mm of Hg. At the same temperature, if one more mole of n-heptane is added to this solution, the vapour pressure of the solution increases by 10 mm of Hg. What is the vapour pressure in mmHg of n-heptane in its pure state ?

The elements with atomic numbers 101 and 104 belong to, respectively

The major product [R] in the following sequence of reactions is:

The major product [R] in the following sequence of reactions is:

When neopentyl alcohol is heated with an acid, it slowly converted into an 85:15 mixture of alkenes A and B, respectively. What are these alkenes?