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HSC Science (General) 12th Standard Board Exam - Maharashtra State Board Question Bank Solutions

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Polonium has the half-Life of ______.

[7] Elements of Groups 16, 17 and 18
Chapter: [7] Elements of Groups 16, 17 and 18
Concept: undefined >> undefined

Name one amphoteric solvent.

[3] Ionic Equilibria
Chapter: [3] Ionic Equilibria
Concept: undefined >> undefined

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The monomer of natural rubber is ______.

[15] Introduction to Polymer Chemistry
Chapter: [15] Introduction to Polymer Chemistry
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Write the name of the product formed by the action of LiAlH4/ether on acetamide.

[13] Amines
Chapter: [13] Amines
Concept: undefined >> undefined

Calculate molar conductivity for 0.5 M BaCl2 if its conductivity at 298K is 0.01 Ω–1 cm–1.

[5] Electrochemistry
Chapter: [5] Electrochemistry
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Convert the following:

Ethyl alcohol into ethyl acetate.

[11] Alcohols, Phenols and Ethers
Chapter: [11] Alcohols, Phenols and Ethers
Concept: undefined >> undefined

How will you obtain the following? (Give balanced equation.)

Ethyl chloride from diethyl ether.

[11.03] Ethers
Chapter: [11.03] Ethers
Concept: undefined >> undefined

Write a chemical reaction for the following conversion:

Acetic acid into ethyl alcohol.

[11] Alcohols, Phenols and Ethers
Chapter: [11] Alcohols, Phenols and Ethers
Concept: undefined >> undefined

Write Dow process for the preparation of Phenol.

[11.02] Phenols
Chapter: [11.02] Phenols
Concept: undefined >> undefined

Write two uses of dioxygen.

[7.02] Group 16 Elements
Chapter: [7.02] Group 16 Elements
Concept: undefined >> undefined

Answer the following.

Name and draw structure of the repeating unit in natural rubber.

[15] Introduction to Polymer Chemistry
Chapter: [15] Introduction to Polymer Chemistry
Concept: undefined >> undefined

Answer the following.

Write the structure of isoprene and the polymer obtained from it.

[15] Introduction to Polymer Chemistry
Chapter: [15] Introduction to Polymer Chemistry
Concept: undefined >> undefined

Answer the following.

Name and draw structure of the repeating unit in natural rubber.

[15] Introduction to Polymer Chemistry
Chapter: [15] Introduction to Polymer Chemistry
Concept: undefined >> undefined

Answer the following.

Write the structure of isoprene and the polymer obtained from it.

[15] Introduction to Polymer Chemistry
Chapter: [15] Introduction to Polymer Chemistry
Concept: undefined >> undefined

Name and draw the structure of the repeating unit in natural rubber.

[15] Introduction to Polymer Chemistry
Chapter: [15] Introduction to Polymer Chemistry
Concept: undefined >> undefined

Write the structure of isoprene and the polymer obtained from it.

[15] Introduction to Polymer Chemistry
Chapter: [15] Introduction to Polymer Chemistry
Concept: undefined >> undefined

Draw structure of the following compound.

2. 5-Diethylphenol

[11] Alcohols, Phenols and Ethers
Chapter: [11] Alcohols, Phenols and Ethers
Concept: undefined >> undefined

Draw structure of the following compound.

2-Methoxypropane

[11] Alcohols, Phenols and Ethers
Chapter: [11] Alcohols, Phenols and Ethers
Concept: undefined >> undefined

Draw structure of the following compound.

Prop-2-en-1-ol

[11] Alcohols, Phenols and Ethers
Chapter: [11] Alcohols, Phenols and Ethers
Concept: undefined >> undefined

Why haloarenes are Less reactive than halo alkanes?

[10.01] Haloalkanes
Chapter: [10.01] Haloalkanes
Concept: undefined >> undefined
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