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HSC Science (General) इयत्ता १२ वी - Maharashtra State Board Question Bank Solutions

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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.

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

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

[4] Chemical Thermodynamics
Chapter: [4] Chemical Thermodynamics
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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
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Draw a neat and well labelled diagram of primary reference electrode.

[4] Electrochemistry
Chapter: [4] Electrochemistry
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How is 1-nitropropane prepared from suitable oxime?

[12.02] Carboxylic Acids
Chapter: [12.02] Carboxylic Acids
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How are  2 - nitropropane prepared from suitable oxime?

[12.02] Carboxylic Acids
Chapter: [12.02] Carboxylic Acids
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Write the reaction for the preparation of Nylon-6.

[15] Polymers
Chapter: [15] Polymers
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Write the reactions involved in dehydration of 1°, 2° and 3° alcohols.

[11.01] Alcohols
Chapter: [11.01] Alcohols
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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
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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
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Derive the relation between half life and rate constant for a first order reaction

[6] Chemical Kinetics
Chapter: [6] Chemical Kinetics
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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
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1.0 x10-3Kg of urea when dissolved in 0.0985 Kg of a solvent, decreases freezing point of the solvent by 0.211 k. 1.6x10 Kg of another non-electrolyte solute when dissolved in 0.086 Kg of the same solvent depresses the freezing point by 0.34 K. Calculate the molar mass of the another solute. (Given molar mass of urea = 60)

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

Write one statement of first law of thermodyamics and its mathematical expression.

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

Write one statement of first law of thermodyamics and its mathematical expression.

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

Calculate Ecell and ΔG for the following at 28°C :

Mg(s) + Sn2+( 0.04M ) → Mg2+( 0.06M ) + Sn(s)

cell = 2.23V. Is the reaction spontaneous ?

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

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

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

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