HSC Science (Electronics) १२ वीं कक्षा - Maharashtra State Board Important Questions

Define Distereoisomers.

Give cis isomer of [Co(NH₃)₄Cl₂]^⊕.

Give trans isomer of [Co(NH₃)₄Cl₂]^⊕.

What are structural isomers?

Draw the geometrical isomers of the following complexes [Co(NH₃)₄Cl₂]⁺

Calculate effective atomic number of \[\ce{[Co(NH3)6]^3+}\] ion.

Mention the number of unpaired electrons and geometry of the following complex:

\[\ce{[Ni(Cl)4]^{2-}}\]

Mention the number of unpaired electrons and geometry of the following complex:

\[\ce{[Ni(CN)4]^2-}\]

Write the name of a hexadentate ligand. 

Identify the product ‘D’ in the following sequence of reactions:

\[\ce{H3C - CH2 - CH2 - Cl \underset{KOH}{\overset{Alc}{->}} 'B' \overset{HBr}{->} 'C' \underset{Elther}{\overset{Na}{->}}'D'}\]

Draw structure of DDT.

Identify ‘A’ and ‘B’ in the following reaction :

\[\ce{CH3 - CH = CH2 ->[HBr]'A' ->[alc.KOH]'B'}\]

State and explain Markownikoff's rule with suitable example

How are the following conversions carried out?

2-methylbutan-1-ol into 2 -methylbutanoic acid.

But-1-ene on reaction with HCl in the presence of sodium peroxide yields _______.

IUPAC name of is C₆H₅ − CH₂ − C − CH₂ − CH₂ − CH₂ − CH₃ is _______

(A) 1-Phenylhexan-2-one

(B) 6-Phenylhexan-5-one

(C) 1-Benzylhexan-5-one

(D) Dodecan-5-one

How is nitromethane prepared from the following?

alkyl halide

How is nitromethane prepared from the following?

α-nitroalkene

Draw a neat, labelled energy profile diagram for SN¹ reaction mechanism.

Write the environmental effects of DDT.