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

Write reaction showing aldol condensation of cyclohexanone.

Answer in brief.

Write reaction showing conversion of Acetaldehyde into acetaldehyde dimethyl acetal.

Distinguish between ethylamine, diethylamine, and triethylamine by using Hinsberg’s reagent?

Choose the most correct option.

The prefix 'nano' comes from ____________.

Answer the following

Which nanomaterial is used for tyres of the car to increase the life of tyres?

Answer the following

Name the scientist who discovered a scanning tunneling microscope (STM) in 1980.

Answer the following

Give the full form (long form) of the name for following instrument.

XRD

Answer the following

Give the full form (long form) of the name for the following instrument.

TEM

Answer the following

Give the full form (long form) of the name for the following instrument.

STM

Answer the following

Give the full form (long form) of the name for the following instrument.

FTIR

Answer the following

Give the full form (long form) of the name for the following instrument.

SEM

Answer the following in one sentence :

Classify the following buffers into different types :

NH₄OH + NH₄Cl

Answer the following in one sentence :

Classify the following buffers into different types :

Sodium benzoate + benzoic acid

Answer the following in one sentence :

Classify the following buffers into different types :

Cu(OH)₂ + CuCl₂

Explain with diagram, the vacancy defect.

How are nonstoichiometric point defects classified? Explain with diagram the metal deficiency defect.

Give the classification of stoichiometric point defects.

What is a substitutional impurity defect?

Explain solid solutions of metals and vacancy through aliovalent cations.

Which of the following statements is applicable for 0.1 M urea solution and 0.1 M sucrose solution?