Applied Chemistry MCQs

By: Prof. Dr. Fazal Rehman | Last updated: July 29, 2024

1. In ___________ pre-ignition of the fuel is seen

(A). petrol knocking
(B). petrol cracking
(C). diesel cracking
(D). diesel knocking
(E). None of these
Multiple Choice Question Answer: a

2. _________ is also called as knocking.

(A). cracking
(B). pinging
(C). doping
(D). crushing
(E). None of these
Multiple Choice Question Answer: b

3. In _________gasoline vapours are purified.

(A). thermal cracking
(B). catalytic cracking
(C). stabilization
(D). knocking
(E). None of these
Multiple Choice Question Answer: c

4. What catalyst is used in the catalytic cracking?

(A). Nacl
(B). Kcl
(C). ZnSO4
(D). Al2O3
(E). None of these
Multiple Choice Question Answer: d

5. Rating of _____is called Octane number.

(A). petrol knocking
(B). diesel knocking
(C). petrol cracking
(D). diesel cracking
(E). None of these
Multiple Choice Question Answer: a

6. The yield of petrol is _______in liquid phase thermal cracking.

(A). 50%-60%
(B). 60%-70%
(C). 70%-80%
(D). 80%-90%
(E). None of these
Multiple Choice Question Answer: a

7. _____ are used for the improvement of anti-knock of diesel.

(A). TEL
(B). Pre-ignition dopes
(C). Di ethyl telluride
(D). N-hexa decane
(E). None of these
Multiple Choice Question Answer: b

8. The best anti-knocking reagents of petrol are _____

(A). straight-chain alkanes
(B). straight-chain alkenes
(C). alkynes
(D). aromatics
(E). None of these
Multiple Choice Question Answer: d

9. Choose the correct order of petrol knocking?

(A). aromatics—->> branched paraffins—->> olefins—->> cyclo paraffins—->> aromatics
(B). straight chain paraffins—->> olefins—->> branched paraffins—->> cyclo paraffins—->> straight chain paraffins
(C). straight chain paraffins—->> branched paraffins—->> olefins—->> cyclo paraffins—->> aromatics
(D). straight chain paraffins—->> branched paraffins—->> olefins—->> aromatics—->> cyclo paraffins
(E). None of these
Multiple Choice Question Answer: c

10. The catalyst is reactivated after every _________ in fixed bed catalytic cracking.

(A). 8-10hrs
(B). 20-24hrs
(C). 5-7hrs
(D). 12-15hrs
(E). None of these
Multiple Choice Question Answer: a

11. ______layered structure is the structure of graphite.

(A). Three dimensional structure
(B). Pyramidal
(C). Planar
(D). Bipyramidal
(E). None of these
Multiple Choice Question Answer: c

12. _____is the distance between the planes of graphite.

(A). 0.876nm
(B). 0.223nm
(C). 0.124nm
(D). 0.335nm
(E). None of these
Multiple Choice Question Answer: d

13. Bonding of the layers is_____

(A). Strong
(B). Weak
(C). Very tightly bonded
(D). Not bonded
(E). None of these
Multiple Choice Question Answer: b

14. One of the properties of graphite is that it is_____anisotropic.

(A). Highly
(B). Lightly
(C). Not
(D). Very less
(E). None of these
Multiple Choice Question Answer: a

15. The graphite can easily be converted into____in the oxygen-containing atmospheres.

(A). Carbon-monoxide
(B). Carbondioxide
(C). Carbonmonosulphide
(D). Carbon-disulphide
(E). None of these
Multiple Choice Question Answer: b

16. _________is pressure applied in vapour phase cracking.

(A). 10-20kg/cm2
(B). 100kg/cm2
(C). 50kg/cm2
(D). 80kg/cm2
(E). None of these
Multiple Choice Question Answer: a

17. The temperature achieved is __________in vapour phase thermal cracking.

(A). 200-400oC
(B). 600-650oC
(C). 500-820oC
(D). 700-800oC
(E). None of these
Multiple Choice Question Answer: b

18. The catalyst is in the form of ___________in moving bed catalytic cracking.

(A). fine powder
(B). pallets
(C). liquid form
(D). gaseous form
(E). None of these
Multiple Choice Question Answer: a

19. _________ is the pressure applied in fixed-bed catalytic cracking.

(B). 50kg/cm2
(C). 100kg/cm2
(D). 1.5kg/cm2
(E). None of these
Multiple Choice Question Answer: d

20. One of the applications of graphite is that it is used in arc lamp electrodes.

(A). True
(B). False
(C). Partially True
Multiple Choice Question Answer: a

21. In stainless steel, graphite goes through____

(A). Microbial corrosion
(B). Crevice corrosion
(C). Pitting corrosion
(D). High-temperature corrosion
(E). None of these
Multiple Choice Question Answer: c

22. Monocrystalline graphite is a ____ material.

(A). Paramagnetic
(B). Diamagnetic
(C). Ferromagnetic
(D). Ferrimagnetic
(E). None of these
Multiple Choice Question Answer: b

23. The graphite is also known as_____

(A). White lead
(B). Black lead
(C). White coal
(D). Black coal
(E). None of these
Multiple Choice Question Answer: b

24. The application of natural graphite is that it is mostly used in ______

(A). Refrigerators
(B). Laboratories
(C). Catalyst
(D). Fuel
(E). None of these
Multiple Choice Question Answer: a

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