HSC Science (Electronics) 12th Standard Board Exam - Maharashtra State Board Question Bank Solutions for Chemistry

Sodium crystallizes in bcc structure. If the edge length of unit cell is 4.3 × 10^-8 cm, the radius of Na atom is ______.

Classify the following solid:

Pb

A compound crystallizes in bcc structure. What is unit cell edge length if diameter of its atom is 120 pm?

In a carbinol system of nomenclature tert.butyl alcohol is named as _______________

In a carbinol system of nomenclature tert.butyl alcohol is named as _______________

In a carbinol system of nomenclature tert.butyl alcohol is named as _______________

Why do phenols give deep coloration with neutral ferric chloride?

Draw the structure of the major product of hydroboration-oxidation of propene.

Derive the equation which implies that the degree of dissociation of weak acid is inversely proportional to the square root of its concentration.

Distinguish between strong electrolyte and weak electrolyte.

An intensive property amongst the following is ______.

Ketones CANNOT be converted into carboxylic acid using _____________

What is cell constant?

Write a classification of aliphatic ketones with a suitable example.

Give the main difference between electrolytic conductivity and molar conductivity with respect to concentration. 

A First order reaction is 50% complete in 69.3 minutes. Time required for 90% completion for the same reaction is _______.

The rate law relates to the rate of a chemical reaction in terms of _______.

Order of reaction for which unit of rate constant is mol dm^–3 s^–1 is _______.

For the reaction \[\ce{2NO_{(g)} + 2H_{2(g)} -> N_{2(g)} + 2H2O_{(g)}}\],

The rate law is, rate = k[NO]² [H₂].

What is the overall order of reaction?

Write four key points about order of reaction.