Download App

Amines — Chemistry STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceChemistryAmines5 Marks
Question
Expian the basic properties of amines.
✓

Answer

SELF

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "5 Marks Questions" from Amines→Amines — all question types→Chemistry STD 12 Science question papers→Gujarat Board STD 12 Science question papers→Gujarat Board question paper generator→

Similar questions

Explain the structure of starch and cellulose.
→
An organic compound $A$ with molecular formula $C_7H_7NO$ reacts with $Br_2/aq.$ $KOH$ to give compound $B,$ which upon reaction with $NaNO_2$ and $HCl$ at $0^\circ C$ gives $C.$ Compound $C$ on heating with $CH_3CH_2OH$ gives a hydrocarbon $D.$ Compound $B$ on further reaction with $Br_2$ water gives white precipitate of compound $E.$ Identify the compound $A, B, C, D$ and $E;$ also justify your answer by giving relevant chemical equations.
→
An element ‘A’ exists as a yellow solid in standard state. It forms a volatile hydride ‘B’ which is a foul smelling gas and is extensively used in qualitative analysis of salts. When treated with oxygen, ‘B’ forms an oxide ‘C’ which is a colourless, pungent smelling gas. This gas when passed through acidified $KMnO_4$ solution, decolourises it. ‘C’ gets oxidised to another oxide ‘D’ in the presence of a heterogeneous catalyst. Identify ‘A’, ‘B’, ‘C’, ‘D’ and also give the chemical equation of reaction of ‘C’ with acidified $KMnO_4​​​​​​​$​​​​​​​ solution and for conversion of ‘C’ to ‘D’.
→
$(a)$ Give plausible explanation for each of the following$:$
$i.$ Why are amines less acidic than alcohols of comparable molecular masses?
$ii.$ Why are primary amines highest boiling than tertiary amines?
$iii.$ Why are aliphatic amines stronger bases than aromatic amines?
$(b)$ Complete the following reactions$:$
$i. C _6 H _5 N_2 Cl + C _2 H _5 OH \rightarrow$
$ii. C _6 H _5 NH _2+\left( CH _3 CO \right)_2 O \rightarrow$
→
What do you understand by shape selective catalysis? Why are zeolites good shape selective catalysts?
→
  1. What type of deviation is shown by a mixture of ethanol and acetone? Give reason.
  2. A solution of glucose (molar mass = $180 g\ mol^{–1}$) in water is labelled as $10\%$ (by mass). What would be the molality and molarity of the solution?
(Density of solution = $1.2 g\ mL^{–1}$).
→
Discuss biological and industrial importance of osmosis.
→
Explain the IUPAC method of nomenclature coordination compounds with examples.
→
Derive the equation required for finding the activation energy.
→
Write IUPAC names of the following compounds and classify them into primary, secondary and tertiary amines.
1. $\left( CH _3\right)_2 CHNH _2$
2. $CH _3\left( CH _2\right)_2 NH _2$
3. $CH _3 NHCH \left( CH _3\right)_2$
4. $\left( CH _3\right)_3 CNH _2$
5. $C _6 H _5 NHCH _3$
→