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

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Explain optical activity of lactic acid

Appears in 2 question papers
Chapter: [9] Coordination Compounds
Concept: Werner’s Theory of Coordination Compounds

How is Benzonitrile converted to Benzophenone?

Appears in 2 question papers
Chapter: [9] Coordination Compounds
Concept: Definitions of Some Important Terms Pertaining to Coordination Compounds

Define ligand.

Appears in 2 question papers
Chapter: [9] Coordination Compounds
Concept: Types of Ligands

The IUPAC name of Na3[AlF6] is _____________

Appears in 2 question papers
Chapter: [9] Coordination Compounds
Concept: IUPAC Nomenclature of Coordination Compounds

Calculate effective atomic number of iron in [Fe(CN)6]4− complex ion

Appears in 2 question papers
Chapter: [9] Coordination Compounds
Concept: Effective Atomic Number (EAN) Rule

Write the type of isomerism exhibited by [Co(NH3)5(NO2)]2+ and [Co(NH3)5ONO]2+ pair of complex ion.

Appears in 2 question papers
Chapter: [9] Coordination Compounds
Concept: Isomerism in Coordination Compounds

Explain homoleptic and heteroleptic complexes.

Appears in 2 question papers
Chapter: [9] Coordination Compounds
Concept: Classification of Complexes

Explain the magnetic properties of [Ni(CN4)]2–.

Appears in 2 question papers
Chapter: [9] Coordination Compounds
Concept: Classification of Complexes

Explain, why [Co(NH3)6]3+ ion is low spin? Calculate number of unpaired electrons and write the geometry of [Co(NH3)6]3+.

Appears in 2 question papers
Chapter: [9] Coordination Compounds
Concept: Theories of Bonding in Complexes

Distinguish between SN1 and SN2 mechanism of substitution reaction.

Appears in 2 question papers
Chapter: [10] Halogen Derivatives
Concept: Chemical Properties

Explain optical isomerism in 2-chlorobutane.

Appears in 2 question papers
Chapter: [10] Halogen Derivatives
Concept: Optical Isomerism in Halogen Derivatives

Write IUPAC name of the product ‘B’ in the following reaction sequence.

\[\ce{C2H5OH ->[NaBr/H2SO4][\Delta] A ->[Nal][acetone]B}\]

Appears in 2 question papers
Chapter: [10] Halogen Derivatives
Concept: Uses and Environmental Effects of Some Polyhalogen Compounds

Give reason. Though alkyl halides are moderately polar, they are insoluble in water.

Appears in 2 question papers
Chapter: [10] Halogen Derivatives
Concept: Methods of Preparation of Alkyl Halides

Explain primary benzylic halide shows higher reactivity by SN1 mechanism than other primary alkyl halide.

Appears in 2 question papers
Chapter: [10] Halogen Derivatives
Concept: Chemical Properties

What is Grignard reagent? How is it prepared? Why are they prepared under anhydrous condition?

Appears in 2 question papers
Chapter: [10] Halogen Derivatives
Concept: Methods of Preparation of Alkyl Halides

What is the action of following on ethyl bromide?

\[\ce{Mg}\] in dry ether

Appears in 2 question papers
Chapter: [10] Halogen Derivatives
Concept: Reaction with Active Metals

What is the action of the following on ethyl bromide?

silver acetate

Appears in 2 question papers
Chapter: [10.01] Haloalkanes
Concept: Hydrocarbons: Alkanes >> Reactions of Haloalkanes - Nucleophilic Substitution Reactions

What is Grignard reagent?

Appears in 2 question papers
Chapter: [10.02] Haloarenes
Concept: Hydrocarbons: Alkanes >> Reactions of Haloarenes - Nucleophilic Substitution

What is metamerism? 

Appears in 2 question papers
Chapter: [11] Alcohols, Phenols and Ethers
Concept: Alcohols, Phenols and Ethers >> Nomenclature

How is phenol converted into the following?

benzoquinone

Appears in 2 question papers
Chapter: [11] Alcohols, Phenols and Ethers
Concept: Alcohols, Phenols and Ethers >> Nomenclature
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