Download App

Amines — Chemistry STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceChemistryAmines5 Marks
✓

Answer

Get the step-by-step solution for this question inside the Vidyadip app.

Get the answer in the app

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

Prove that boiling point elevation (AT) is proportional to the molality of solute present in the solution. Also find its mathematical form.
→
Answer the following questions:
Give chemical reactions for the following observations:
  1. Potassium permanganate is a good oxidising agent in basic medium.
  2. Inter convertibility of chromate ion and dichromate ion in aqueous solution depends upon pH of the solution.
  3. Potassium permanganate is thermally unstable at 513K.
→
  1.  
  1. How is the variability in oxidation states of transition metals different from that of the p-block elements?
  2. Out of Cu+ and Cu2+, which ion is unstable in aqueous solution and why?
  3. Orange colour of Cr2O72– ion changes to yellow when treated with an alkali. Why?
  1. Chemistry of actinoids is complicated as compared to lanthanoids. Give two reasons.
→
  1. Name the element of 3d transition series which shows maximum number of oxidation states. Why does it show so?
  2. which transition metal of 3d series has positive Eo(M2+/M) value and why?
  3. Out of Cr3+ and Mn3+, which is a stronger oxidizing agent and why?
  4. Name a member of the lanthanoid series which is well known to exhibit +2 oxidation state.
  5. Complete the following equation:

MnO-4+8H++5e-$→$

→
  1. Answer the following questions briefly:
  1. What are reducing sugars?
  2. What is meant by denaturation of a protein?
  3. How is oxygen replenished in our atmosphere?
  1. Define enzymes.
→
What is called a battery? Explain its characteristics and describe dry cell and mercury cell.
→
How does colour appear in coordination compounds? Its explanation is based on crystal field theory.
→
Match the solutions given in Column I and the colours given in Column II.
 
Column I
(Aqueous solution of salt)
 
Column II
(Colour)
(i)
FeSO4.7H2O
(a)
Green
(ii)
NiCl2.4H2O
(b)
Light pink
(iii)
MnCl2.4H2O
(c)
Blue
(iv)
CoCl2.6H2O
(d)
Pale green
(v)
Cu2Cl2
(e)
Pink
 
 
(f)
Colourless
→
What is the relationship between Gibbs free energy of the cell reaction in a galvanic cell and the emf of the cell? When will the maximum work be obtained from a galvanic cell?
→
For a certain chemical reaction variation in the concentration ln [R] vs. time plot is given alongside.

For this reaction:

  1. What is the order of the reaction?
  2. What are the units of rate constant k?
  3. Give the relationship between k and t1/2 (half-life period).
  4. What is the slope of the curve?
  5. Draw the plot log [R]0 /[R] vs time t(s).

→