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Download Applied Chemistry Question Paper 2022 | SBTE Bihar

Applied chemistry 2022

1. The slag obtained during the extraction of copper from pyrites mainly of :


  • CaSiO3
  • CuSiO3
  • FeSiO3
  • MnSiO3

2. Rusting of iron is catalysed by which of the following.

  • Fe
  • Zn
  • H+

3. Rose metal is an alloy of :

  • Cu + Zn + Ni
  • Bi + Pb + Sn
  • Sn + Cr + Fe 
  • Bi + Cd + Sn

4. The number of radial nodes of 4p orbital is :

  • 0
  • 1
  • 2
  • 3

5. In which of the following minerals in aluminium is not present :

  • Fledspar
  • Fluorspar
  • Mica
  • Cryolite

6. The cetane number of n - hexadecane is :

  • 0
  • 50
  • 100
  • None of these

7. Bomb calorimeter is used for determining calorific value of :

  1. Solid fuel
  2. Liquid fuel
  3. Gaseous fuel
  4. Both 1 and 2

8. Maximum number of orbitals in orbit number 3 will be : 

  • 6
  • 8
  • 9
  • 18

9. The hybridisation in BF3 is :

  • Sp
  • Sp²
  • Sp³
  • dsp²

10. Permanent hardness of water may be removed by the addition of :

  • Soda ash
  • Lime
  • Calcium sulphate
  • Sodium bicarbonate

11. Which of the following compound is bent ?

  • BcCl²
  • BF³
  • H²O
  • NH³
12. What weight of copper will be deposited by passing 2 faradays of electricity through a solution of cupric salt (Al wt of Cu = 63.5)?

  • 2 gm
  • 31.75 gm
  • 63.5 gm
  • 127 gm

13. Which of the following is a primary cell :

  • Mercury cell
  • Lead storage cell
  • Nickel - cadmium cell
  • None of these

14. Acid value of good lubricant should be :

  • Low
  • High
  • Moderate
  • None of these

15. The charge required for reduction of one mol of MnO-⁴ to Mn+².

  • 96500 Coulomb
  • 193000 Coulomb
  • 289500 Coulomb
  • 482500 Coulomb

16. The total number of electrons in nitrogen ion is :

  • 30
  • 31
  • 32
  • 34

17. Which of the following is not a water borne disease:

  • Typhoid
  • Scabies
  • Cholera
  • Hepatitis

18. Which of the following contains nitrogen?

  • Teflon
  • Nylon
  • Terylene
  • PVC

19. Which of the following can be used as monomer in polymerisation reaction :

  • CH3CH2Cl
  • CH3CH2OH
  • C6H6
  • C3H6

20. Among the following which creates permanent hardness of water :

  • MgSO4
  • KCl
  • NaNO3
  • NaHCO3

Applied Chemistry 2021 (Even)



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