HSC Science (General) 12th Standard Board Exam - Maharashtra State Board Question Bank Solutions

Write the name of the polymer obtained by polymerization of 2-chloro-1, 3-butadiene.

Write the chemical reaction for the preparation of the following polymer.

polyisoprene

Which of the following transition element shows maximum oxidation state?

Henry's law constant for CH₃Br_(g) is 0.159 mol dm^–3 bar^–1 at 25°C. What is the solubility of CH₃Br_(g) in water at the same temperature and partial pressure of 0.164 bar?

Explain cationic, anionic and neutral sphere complexes w ith example.

Obtain the expression for half-life and rate constant of the first-order reaction.

Define the half-life of a first-order reaction.

On which electrode the oxidation reaction takes place?

How ketones are prepared from nitriles?

How ketones are prepared from nitriles?

Why alkyl halides though polar are immiscible with water?

What is Henry's law?

Which of the following correctly represents integrated rate law equation for a first order reaction in a gas phase?

Ozonolysis of 2, 3 dimethyl but-2-ene, followed by decomposition by Zn dust and water gives ______.

Ozonolysis of 2, 3 dimethyl but-2-ene, followed by decomposition by Zn dust and water gives ______.

Calculate the work done during the expansion of 2 moles of an ideal gas from 10 dm³ to 20 dm³ at 298 K in a vacuum.

Explain anomalous behaviour of oxygen in group 16 with respect to:

1. Atomicity
2. Magnetic property
3. Oxidation state

A pair of coloured ions is ______.

Explain why the anode is of negative polarity in a galvanic cell.

Write a note on Kolbe's reaction