HSC Science (General) इयत्ता १२ वी - Maharashtra State Board Question Bank Solutions

Mention the res of the following solid:

CO₂

How will you prepare propanone (acetone) from Grignard reagent?

What are intermolecular forces of attraction involved in molecular crystals?

Name and draw structure of the repeating unit in natural rubber.

Write the structure of isoprene and the polymer obtained from it.

Write a structure of 2-Iodo-3 - methylpentane.

Calculate pH of 0.01 M NaOH.

Explain the determination of molar conductivity of a weak electrolyte at infinite dilution or zero concentration using Kohlrausch's law.

Which of the following does not have d⁰s⁰ configuration?

Find out the reaction intermediate and molecularity of the following reactions.
\[\ce{NO_{(g)} + Cl2_{(g)} -> NOCl_{2(g)}}\]

\[\ce{NOCl_{2(g)} + NO_{(g)} -> 2NOCl_{(g)}}\]

Draw the structure of BrF₅ and HOCl.

A complex chemical reaction takes place in two steps.

Step I: NO(g) + O₃(g) → NO₃(g) + O(g)

Step II: NO₃(g) + O(g) → NO₂(g) + O₂(g)

The predicted rate law is rate = k[NO][O₃]

1. Identify the rate determining step.
2. Name the reaction intermediate/s. Why is/are it/these intermediate/s?

Vinegar contains ______ acid.

Define the term cell constant.

How is alkyl halide converted into alcohol by using?

Aqueous NaOH (or KOH)

How is alkyl halide converted into alcohol by using Moist silver oxide?

What is double salt?

What are actinoids? Give their general electronic configuration.

Identify the conjugate acid-base pairs in the reaction,

\[\ce{CH3COOH(aq) + NH3(aq) <=> NH^+_4(aq) + CH3COO^-(aq)}\]

Name the distinguishing test for differentiating 1° amine from 2° and 3° amine.

Discuss the trend in the following in case of groups 16, 17 and 18 elements.

Atomic and ionic radii