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

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Complete the following reaction giving major product.

\[\begin{array}{cc}
\ce{CH3}\phantom{.................}\\
|\phantom{...................}\\
\ce{CH3 - C - CH2 - Cl ->[Na/dry ether] A}\\
|\phantom{...................}\\
\ce{CH3}\phantom{.................}\\
\end{array}\]

[10] Halogen Derivatives
Chapter: [10] Halogen Derivatives
Concept: undefined >> undefined

Complete the following reaction giving major product.

\[\begin{array}{cc}
\ce{CH3}\phantom{................}\\
|\phantom{...................}\\
\ce{CH3 - C - CH2 - Cl ->[Na/dry ether] A}\\
|\phantom{...................}\\
\ce{CH3}\phantom{................}\\
\end{array}\]

[10] Halogen Derivatives
Chapter: [10] Halogen Derivatives
Concept: undefined >> undefined

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Derive the relation pH + pOH = 14.

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

Define the following term: 

pH

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

Define the following term:

pOH

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

Write the formula to determine the molar mass of a solute using freezing point depresssion method.

[2] Solutions and Colligative Properties
Chapter: [2] Solutions and Colligative Properties
Concept: undefined >> undefined

Write mathematical equation of first law of thermodynamics for the following processes :
Adiabatic process.

[3] Chemical Thermodynamics and Energetic
Chapter: [3] Chemical Thermodynamics and Energetic
Concept: undefined >> undefined

Write mathematical equation of first law of thermodynamics for the following processes :
Adiabatic process.

[4] Chemical Thermodynamics
Chapter: [4] Chemical Thermodynamics
Concept: undefined >> undefined

Write the mathematical equation of the first law of thermodynamics for an isochoric process.

[4] Chemical Thermodynamics
Chapter: [4] Chemical Thermodynamics
Concept: undefined >> undefined

Write the mathematical equation of the first law of thermodynamics for an isochoric process.

[3] Chemical Thermodynamics and Energetic
Chapter: [3] Chemical Thermodynamics and Energetic
Concept: undefined >> undefined

Draw a neat and well labelled diagram of primary reference electrode.

[4] Electrochemistry
Chapter: [4] Electrochemistry
Concept: undefined >> undefined

How is 1-nitropropane prepared from suitable oxime?

[12.02] Carboxylic Acids
Chapter: [12.02] Carboxylic Acids
Concept: undefined >> undefined

How are  2 - nitropropane prepared from suitable oxime?

[12.02] Carboxylic Acids
Chapter: [12.02] Carboxylic Acids
Concept: undefined >> undefined

Write the reaction for the preparation of Nylon-6.

[15] Polymers
Chapter: [15] Polymers
Concept: undefined >> undefined

Write the reactions involved in dehydration of 1°, 2° and 3° alcohols.

[11.01] Alcohols
Chapter: [11.01] Alcohols
Concept: undefined >> undefined

How are 1 - nitropropane, 2-nitropropane and 2-methyl 2- nitropropane are distinguished from each other using nitrous acid?

[13.01] Amines
Chapter: [13.01] Amines
Concept: undefined >> undefined

Phenelzine is used as an

(a)  analgesic                      

(b) antiseptic

(c) antipyretic

(d) antidepressant

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

The integrated rate equation for first order reaction is A → products

[6] Chemical Kinetics
Chapter: [6] Chemical Kinetics
Concept: undefined >> undefined

Derive the relation between half life and rate constant for a first order reaction

[6] Chemical Kinetics
Chapter: [6] Chemical Kinetics
Concept: undefined >> undefined

Arrange the following reducing agents in the order of increasing strength under standard state conditions. Justify the answer 

Element

Al(s)

Cu(s)

Cl(aq)

Ni(s)

 

Eo

-1.66V

0.34V

1.36V

-0.26V

 

[4] Electrochemistry
Chapter: [4] Electrochemistry
Concept: undefined >> undefined
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