HSC Science (Electronics) इयत्ता १२ वी - Maharashtra State Board Question Bank Solutions for Chemistry

How are the following compounds prepared?

Benzyl alcohol from benzyl chloride.

What are monosaccharides?

Draw ring structure of α - D - (+) - glucopyranose.

What is the action of bromine water on carbolic acid?

Write the structure and IUPAC names of isomeric aldehydes having molecular formula C₅H₁₀O.

The major binding force in diamond is_______________ .

(a) Covalent bond                                                  

(b)  Ionic bond

(c) Metallic bond                                                   

(d)  Co-ordinate covalent bond

The molar conductivity of cation and anion of salt BA are 180 and 220 mhos respectively. The molar conductivity of salt BA at infinite dilution is_____________ .

(a) 90 mhos.cm²                                                                             

(b) 110 mhos.cm².mol^-1

(c) 200 mhos.cm².mol^-1                                                                 

(d) 400 mhos.cm².mol^-1

Sucrose decomposes in acid solution to give glucose and fructose according to the first order rate law. The half life of the reaction is 3 hours. Calculate fraction of sucrose which will remain after 8 hours.

Distinguish between Order and Molecularity of reaction.

Describe the laboratory method of preparation of ammonia

What is the IUPAC name of 

How are propan-1-amine and propan-2-amine prepared from oxime?

Write any ‘two’ uses of terylene.

Write the reactions involved in the preparation of  PVC

What is the covalency of nitrogen in N₂O₅?

Write the IUPAC name of 

The conductivity of 0.20 M solution of KCl at 298 K is 0.025 S cm⁻¹. Calculate its molar conductivity.

Write the IUPAC names of the following coordination compounds: [Cr(NH₃)₃Cl₃]

For a first order reaction, show that time required for 99% completion is twice the time required for the completion of 90% of reaction.

 A first order reaction takes 40 minutes for 30% decomposition. Calculate t_1/2 for this reaction. (Given log 1.428 = 0.1548)