Download Applied Chemistry Question Paper 2022 | SBTE Bihar

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.

• O²
• 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

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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

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