Question
Short note on $:$ Cellulose.
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Answer
$\rightarrow$Cellulose occurs exclusively in plants and it is the most abundant organic substance in plant kingdom.
$\rightarrow$It is a predominant constituent of cell wall of plant cells.
Cellulose is a straight chain polysaccharide composed only of $ẞ-D-$glucose units which
$\rightarrow$ are joined by glycosidic linkage between $C_1$ of one glucose unit and $c_4$ of the next glucose unit.
$\rightarrow$It is a predominant constituent of cell wall of plant cells.
Cellulose is a straight chain polysaccharide composed only of $ẞ-D-$glucose units which
$\rightarrow$ are joined by glycosidic linkage between $C_1$ of one glucose unit and $c_4$ of the next glucose unit.
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Match the reactions given in Column $I$ with the suitable reagents given in Column $II.$
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Column $I ($Reactions$)$
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Column $II ($Reagents$)$
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| $(i)$ |
Benzophenone $\rightarrow$ Diphenylmethane
|
$(a)$ |
$\ce{LiAlH_4}$
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| $(ii)$ |
enzaldehyde $\rightarrow 1-$Phenylethanol
|
$(b)$ |
$\ce{DIBAL-H}$
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| $(iii)$ |
Cyclohexanone $\rightarrow$ Cyclohexanol
|
$(c)$ |
$\ce{Zn(Hg)/Conc. HCl}$
|
| $(iv)$ |
Phenyl benzoate $\rightarrow$ Benzaldehyde
|
$(d)$ |
$\ce{CH_3MgBr}$
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Explain the effect of catalyst on rate of reaction. And also give its characteristics.
State Henry’s law and write its two applications.
Write equations of the following chemical reactions:
(i) Phenol reacts with conc. $ HNO_{3} $
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→(i) Phenol reacts with conc. $ HNO_{3} $
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ii. Phenol to Acetophenone
i. Ethanol to 1, 2-Ethanediol
ii. Phenol to Acetophenone
Draw cis and trans isomers of $\left[ Pt \left( NH _3\right)_4 Cl _2\right]^{2+}$.
→Propose the mechanism for the following reaction:
$\text{CH}_3\text{CHO}\ \ +\ \ \text{HCN}\xrightarrow{\ \ \text{a}+ }\ \ \text{CH}_3-\text{CH}-\text{CN}\\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ | \\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \text{OH}$
→$\text{CH}_3\text{CHO}\ \ +\ \ \text{HCN}\xrightarrow{\ \ \text{a}+ }\ \ \text{CH}_3-\text{CH}-\text{CN}\\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ | \\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \text{OH}$
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Acetone to propene.
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