Download App

Biomolecules — Chemistry STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceChemistryBiomolecules2 Marks
Question
Amino acids behave like salts rather than simple amines or carboxylic acids. Explain.
✓

Answer

Amino acids behave like salts rather than simple amines or carboxylic acids. This behaviour is due to the presence of both acidic (carboxyl group) and basic (amino group) groups in the same molecule. In aqueous solution, the carboxyl group can lose a proton and amino group can accept a proton, giving rise to a dipolar ion known as zwitter ion.

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 "2 Marks Questions" from Biomolecules→Biomolecules — all question types→Chemistry STD 12 Science question papers→Gujarat Board STD 12 Science question papers→Gujarat Board question paper generator→

Similar questions

A sample of drinking water was found to be severely contaminated with chloroform (CHCl3) supposed to be a carcinogen. The level of contamination was 15 ppm (by mass):
  1. Express this in percent by mass.
  2. Determine the molality of chloroform in the water sample.
→
0.05 moles of ethanoic acid is dissolved in $2 5 0 ~ g m$ benzene. Calculate molality of solution.
→
What will happen to freezing point of a potassium iodide aqueous solution when mercuric iodide is added to solution?
→
Two isomeric compounds (A and B) have $C _4 H _{11} N$ molecular formula react with $HNO _2$ and forms compounds (C) and (D). C is hardly oxidised but it reacts immediately with Lucas reagent whereas $D$ reacts with Lucas reagent in 5 minutes and it also gives haloform reaction. Identify $A, B, C$ and $D$.
→
  1. Gas (A) is more soluble in water than Gas (B) at the same temperature. Which one of the two gases will have the higher value of KH (Henry's constant) and why?
  2. In non-ideal solution, what type of deviation shows the formation of maximum boiling azeotropes?
→
Explain nucleophilic addition reaction of aldehydes and ketones with sodium hydrogensulphite (NaHSO3). ### Explain the nucleophilic addition reaction which is useful for separation and purification of aldehydes.
→
Arrange the following in decreasing order of their acidic strength and give reason for your answer.
CH3CH2OH, CH3COOH, ClCH2COOH, FCH2COOH, C6H5CH2COOH
→
An organic compound ‘X’ having molecular formula C4H8O gives orange-red ppt. with 2, 4-DNP reagent. It does not reduce Tollens’ reagent but gives yellow ppt. of iodoform on heating with NaOI. Compound X on reduction with LiAlH4 gives compound ‘Y’ which undergoes dehydration reaction on heating with conc. H2SO4 to form But-2-ene. Identify the compounds X and Y.
→
The experimental rate equation of a reaction $2 N _2 O \rightarrow 2 N _{ 2 }+ O _2$ is as follows: rate $= k \left[ N _2 O \right]$. Write the mechamism of the reaction.
→
Anhydrous $CuSO _4$ is white but hydrated $CuSO _4$ is blue while both contain $Cu ^{2+}$ ions. Why?
→