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MAH-MHT CET (PCM/PCB) entrance exam Question Bank Solutions

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Which of the following reagents is used for the following conversion?

\[\ce{CH3 - CH = CH - CHO -> CH3 - CH = CH - CH2OH}\]

[22] Aldehydes, Ketones, and Carboxylic Acids
Chapter: [22] Aldehydes, Ketones, and Carboxylic Acids
Concept: undefined >> undefined

Calculate mass of 3.01 × 1024 atoms of an element having atomic mass 21.13.

[1] Some Basic Concepts of Chemistry
Chapter: [1] Some Basic Concepts of Chemistry
Concept: undefined >> undefined

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Which of the following does NOT give yellow precipitate when reacted with (NaOH + I2) mixture?

[22] Aldehydes, Ketones, and Carboxylic Acids
Chapter: [22] Aldehydes, Ketones, and Carboxylic Acids
Concept: undefined >> undefined

Identify the product Y in the following series of reactions.

\[\ce{4-Nitrotoluene ->[(CH3CO)2O/CrO3][273 - 278 K] X ->[H3O^+][\Delta] Y}\]

[22] Aldehydes, Ketones, and Carboxylic Acids
Chapter: [22] Aldehydes, Ketones, and Carboxylic Acids
Concept: undefined >> undefined

For the reaction, \[\ce{N_{2(g)} + 3H_{2(g)} -> 2NH_{3(g)}}\], ΔH is equal to ______.

[14] Chemical Thermodynamics
Chapter: [14] Chemical Thermodynamics
Concept: undefined >> undefined

In which of the following reactions, ΔH is not equal to ΔU?

[14] Chemical Thermodynamics
Chapter: [14] Chemical Thermodynamics
Concept: undefined >> undefined

Which of the following compound will show a positive silver mirror test?

[22] Aldehydes, Ketones, and Carboxylic Acids
Chapter: [22] Aldehydes, Ketones, and Carboxylic Acids
Concept: undefined >> undefined

Denaturation of proteins leads to loss of their biological activity by:

[24] Biomolecules
Chapter: [24] Biomolecules
Concept: undefined >> undefined

Which of the following amino acid is basic in nature?

[24] Biomolecules
Chapter: [24] Biomolecules
Concept: undefined >> undefined

The reagent used in Wolf - Kishner reduction is ______.

[22] Aldehydes, Ketones, and Carboxylic Acids
Chapter: [22] Aldehydes, Ketones, and Carboxylic Acids
Concept: undefined >> undefined

What is the amount of work done when 0.5 mole of methane, CH4 (g), is subjected to combustion at 300 K? (Given, R = 8.314 JK-1mol-1)

[14] Chemical Thermodynamics
Chapter: [14] Chemical Thermodynamics
Concept: undefined >> undefined

Primary nitroalkanes are obtained in good yield by oxidising aldoximes with the help of ______.

[22] Aldehydes, Ketones, and Carboxylic Acids
Chapter: [22] Aldehydes, Ketones, and Carboxylic Acids
Concept: undefined >> undefined

The work done during combustion of 9 × 10-2 kg of ethane, C2H6 (g) at 300 K is ______.
(Given R = 8.314 J deg-1, atomic mass C = 12, H = 1)

[14] Chemical Thermodynamics
Chapter: [14] Chemical Thermodynamics
Concept: undefined >> undefined

Which one of the following substituents at para-position is most effective in stabilizing the phenoxide  ion?

[22] Aldehydes, Ketones, and Carboxylic Acids
Chapter: [22] Aldehydes, Ketones, and Carboxylic Acids
Concept: undefined >> undefined

Which one of the following reactions will not result in the formation of a carbon-carbon bond?

[22] Aldehydes, Ketones, and Carboxylic Acids
Chapter: [22] Aldehydes, Ketones, and Carboxylic Acids
Concept: undefined >> undefined

Which of the following compounds will undergo self-aldol condensation in the presence of cold dilute alkali?

[22] Aldehydes, Ketones, and Carboxylic Acids
Chapter: [22] Aldehydes, Ketones, and Carboxylic Acids
Concept: undefined >> undefined

The amine, which reacts with p-toluenesulphonyl chloride to give a clear solution, which on acidification gives insoluble compound is ______.

[23] Amines
Chapter: [23] Amines
Concept: undefined >> undefined

Which of the following compound will give positive iodoform test?

[22] Aldehydes, Ketones, and Carboxylic Acids
Chapter: [22] Aldehydes, Ketones, and Carboxylic Acids
Concept: undefined >> undefined

A substance C4H10O yields on oxidation a compound, C4H8O which gives an oxime and a positive iodoform test. The original substance on treatment with a conc. H2SO4 gives C4H8. The structure of the compound is ______.

[22] Aldehydes, Ketones, and Carboxylic Acids
Chapter: [22] Aldehydes, Ketones, and Carboxylic Acids
Concept: undefined >> undefined

The amino acid, which is basic in nature is ______.

[24] Biomolecules
Chapter: [24] Biomolecules
Concept: undefined >> undefined
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