Write down the conditions and reaction of preparation of `HNO_3` by Ostwald's process.

Write down the conditions and reaction of preparation of H_2SO_4 by contact process.

Write down the conditions for hybrogen bond formation.

Write the reaction involved in laboratory preparation of HNO_(3) .

Write down the condition for minimum deviation in prism.

Write the reaction involved in each step of manufacturing HNO_(3) by Ostwald's precess. How can the acid formed by this process be concentrated ?

Write down the conditions of floatation and immersion of a body.

Write down the conditions of reversibility of a process.

Write down the conditions of congruency of two triangles.

Write down the condition and equation of the reaction between ammonia and diborane. Why is the product called inorganic benzene?