JAC Board 12th Model Paper: This is Jharkhand Board Chemistry Model Paper, 12th students can check

JAC Board 12th Model Paper Part 2 Chemistry: Students appearing for the Jharkhand Board 12th exam should prepare according to the model paper. The model paper has been released on the official website of the board. If students prepare according to the model paper, there is a chance of getting good marks.

Section A

From your city (Ranchi)

1. What is the effect of temperature on physical absorption?
1. What is the effect of temperature on physisorption?

2. Write the ionization isomer of [Co(NH3)5Br]SO4.
2. [Co(NH3)5Br]Write the ionic isomers of SO4.

3.Write the IUPAC name of oxalic acid.
Write the IUPAC name of oxalic acid.

4. Name the vitamin responsible for blood clotting.
4. Name the vitamin that is effective in blood clotting.

5. Write the name of condensation polymer.
5. Name the condensation polymer.

6. Name the disinfectant as well as the substance used as a disinfectant.
Name the substance which can be used as both antiseptic and disinfectant.

Department – B
7. Distinguish between order and molecularity of a reaction.
7. Distinguish between order and molecularity of a reaction.

8. Distinguish between the terms absorption and exploitation. Give an example of each.
Write the difference between absorption and absorption. Give an example of each.

9. What is the oxidation number of the central metal atom in each of the following?
(me) [Pt(NH3)6]Cl4(II)K3[Fe(CN)6] (III)Ni(CO)4
What is the oxygen number of the following central metal atom?
(me) [Pt(NH3)6]Cl4(II)K3[Fe(CN)6] (III)Ni(CO)4

10. How do you convert:
(I) Propanone to Propane (II) Ethanol to 3-Hydroxybutanol
11. How do you convert:
(I) Propenone to propane (II) Ethanol to 3-hydroxybutanal

11. What are the hydrolysis products of:
a) Sucrose b) Lactose c) Maltose
Which of the following would be the hydrolysis products?
a) Sucrose b) Lactose c) Maltose

12. Define the term polymerization. Distinguish between natural and artificial
Polymers with examples.
, define the term moderating. Write the difference between natural and synthetic polymers with examples.

13. What is a food preservative? Give an example.
What are food preservatives? Write an example.

Section – C
14.a) Derive the integrated rate equation for the first order reaction.
b) A first order reaction occurs
Rate constant K = 5.5X10-14 s-1. Calculate the half life of the reaction.
a) Derive the expression for the differential rate equation for the first order reaction.
b) Value of rate constant K for first order reaction is 5.5X10-14 s-1
Calculate the half-life for this reaction.

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15. Complete the following reactions:
i) C2H4 + O2 
ii) CaF2 + H2SO4 
iii) SO3 + H2O 
iv) I2 + 6H2O + 5Cl2
v) 4Al + 3O2 
15. Complete the following reactions:
i) C2H4 + O2 
ii) CaF2 + H2SO4 
iii) SO3 + H2O 
iv) I2 + 6H2O + 5Cl2 
v) 4Al + 3O2 

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