The number of optically active stereoisomers possible for butane- $2,3$-diol.

Important Questions on Organic Chemistry- Some Basic Principles and Techniques

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IMPORTANT

Chemistry Crash Course JEE Main>Chapter 17 - Organic Chemistry- Some Basic Principles and Techniques>Level 2>Q 24

Among $\mathrm{HCl}, \mathrm{HBr}, \mathrm{HF}$, and $\mathrm{HI}$, the weakest acid in water is:

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Chemistry Crash Course JEE Main>Chapter 17 - Organic Chemistry- Some Basic Principles and Techniques>Level 2>Q 25

The correct order of increasing basicity of the given conjugate bases $\left(\mathrm{R}={\mathrm{CH}}_3\right)$ is:
 

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IMPORTANT

Chemistry Crash Course JEE Main>Chapter 17 - Organic Chemistry- Some Basic Principles and Techniques>Level 2>Q 26

Which of the following presents the correct order of the acidity in the given compounds?
 

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Chemistry Crash Course JEE Main>Chapter 17 - Organic Chemistry- Some Basic Principles and Techniques>Level 2>Q 27

Base strength is in the order of
$\left(\mathrm{i}\right) {\mathrm{CH}}_3\stackrel{⊝}{\mathrm{C}}{\mathrm{H}}_2$
$\left(\mathrm{ii}\right) {\mathrm{H}}_2\mathrm{C}=\stackrel{⊝}{\mathrm{C}}\mathrm{H}$ and
$\left(\mathrm{iii}\right) \mathrm{H}-\mathrm{C}\equiv {\mathrm{C}}^{\ominus }$

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IMPORTANT

Chemistry Crash Course JEE Main>Chapter 17 - Organic Chemistry- Some Basic Principles and Techniques>Level 2>Q 28

The correct order of increasing bond length of $\mathrm{C}-\mathrm{H}, \mathrm{C}-\mathrm{O}, \mathrm{C}-\mathrm{C}$ and $\mathrm{C}=\mathrm{C}$ is:

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Chemistry Crash Course JEE Main>Chapter 17 - Organic Chemistry- Some Basic Principles and Techniques>Level 2>Q 29

Among the following the weakest base is:
 

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Chemistry Crash Course JEE Main>Chapter 17 - Organic Chemistry- Some Basic Principles and Techniques>Level 2>Q 30

Pyridine is less basic than triethylamine because:

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IMPORTANT

Chemistry Crash Course JEE Main>Chapter 17 - Organic Chemistry- Some Basic Principles and Techniques>Level 2>Q 31