Science (English Medium) इयत्ता १२ - CBSE Question Bank Solutions for Chemistry

Decide which of the following atomic numbers are the atomic numbers of the inner transition elements:

29, 59, 74, 95, 102, 104

Compare the general characteristics of the first series of the transition metals with those of the second and third series metals in the respective vertical columns. Give special emphasis on the following point:

Oxidation states

Compare the general characteristics of the first series of the transition metals with those of the second and third series metals in the respective vertical columns. Give special emphasis on the following point:

Ionisation enthalpies

Compare the general characteristics of the first series of the transition metals with those of the second and third series metals in the respective vertical columns. Give special emphasis on the following point:

Atomic sizes

Write the structure of the compound whose IUPAC name is as follows:

4-Chloro-3-ethylbutan-1-ol

How will you convert: Propene to Propan-2-ol?

Write the chemical equation involved in the following reaction:

Hoffmann-bromamide degradation reaction

Arrange the following in the increasing order of their boiling points: CH₃CHO, CH₃COOH, CH₃CH₂OH

Name the reagents used in the following reactions:

Illustrate the following reaction giving suitable example in each case:Gabriel phthalimide synthesis

Write the main product(s) in each of the following reactions:

Name the reagents used in the following reactions:

How do you convert the following : Propan-2-ol to 2-methylpropan-2-ol

An aromatic compound 'A' of molecular formula C₇H₇ON undergoes a series of reactions as shown below. Write the structures of A, B, C, D and E in the following reactions :

How do you convert the following: C₆H₅CONH₂ to C₆H₅NH₂

How do you convert the following: Ethanenitrile to ethanamine

Write the structures of the main products when acetone (CH₃ − CO − CH₃) reacts with the following reagents :

CH₃MgBr and then H₃O⁺

Write the names of monomers used for getting the following polymer:

Neoprene

Give the structures of A, B and C in the following reactions :

Give the structures of A, B and C in the following reactions :