Nano Wires, Nano Cones and Neutralization Acidic Number MCQs

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1. : In ___, the nan-wires are used.
(A) Capacitors
(B) Resistors
(C) Transistors
(D) Transducers

2. : Predominant structures made with ___ are called nano cones.
(A) Silicon
(B) Nitrogen
(C) Hydrogen
(D) Carbon

3. : ___ is the diameter of the nano-wire.
(A) 10^-6 m
(B) 10^-9 m
(C) 10^-8 m
(D) 10^-3 m

4. : ____ are the superconducting wires.
(A) Pt
(B) Ni
(C) YBCO
(D) Au

5. : In ____, a suspended nano-wire is produced.
(A) Air medium
(B) High vacuum chamber
(C) Low vacuum chamber
(D) Vacuum

6. : For welding purposes, those nanometers whose diameters are less than ___ are used.
(A) 30 nm
(B) 20 nm
(C) 10 nm
(D) 40 nm

7. : ______ of the lubricating oil cannot be given by the neutralization number.
(A) Moisture level
(B) Amount of acid
(C) Amount of base
(D) Corrosive nature

8. : ______ are the preferred opening angles of nanocones.
(A) 20, 30, 40
(B) 20, 40, 50
(C) 20, 40, 80
(D) 20, 40, 60

9. : _____ is formed by the fatty oils.
(A) Glycerine
(B) Ethanol
(C) Glycerol
(D) Glycerol

10. : With time acid content ____
(A) Decreases
(B) Becomes zero
(C) Remains constant
(D) Increases

11. : The next step is to build ___ if the pn_junctions were built with nano-wires.
(A) Transistors
(B) Transducers
(C) Resistors
(D) Logic gates

12. : Due to the presence of ____ the blended oils contain the higher values.
(A) Catalyst
(B) Additives
(C) Salts
(D) Reagents

13. : Due to ____, the neutralization number is increased.
(A) Pureness
(B) Catalysis
(C) Hydrolysis
(D) Contamination

14. : Due to ____, the darkening of the oil color takes place.
(A) Hydrolysis
(B) Reduction
(C) Oxidation
(D) Catalysis

15. : By ____, the total acid number of oil can be given. Suppose Wt is the weight of oil taken and Wu is the weight of oil used.
(A) Acid value = (vol of 0.1N KOH used * 56) / (Wt)
(B) Acid value = (vol of 0.01N KOH used * 56) / (Wt)
(C) Acid value = (vol of 0.1N KOH taken * 56) / (Wu)
(D) Acid value = (vol of 0.01N KOH taken * 56) / (Wu)

16. : To indicate the progress of ____ the periodic determination of acid number is used.
(A) Acidic number
(B) Reduction number
(C) Oxidation number
(D) Neutralisation number

17. : The acid value must be less than ____ of the lubricating oil.
(A) 0.1
(B) 0.7
(C) 1
(D) 7

18. : There must be ___ neutralization values for the unblended petroleum oils.
(A) Very high
(B) Zero
(C) Negligible
(D) Very low

19. : By the process of ____, the other parameters apart from the acid number can also be determined.
(A) Potentiometer titration
(B) Colour indicating titration
(C) Catalysis
(D) Spectroscopic methods

20. : ___ in lubricating oil is the reason of corrosion problems.
(A) Potassium chloride
(B) Carbon dioxide
(C) Sodium chloride
(D) Naphthenic acid

21. : The sample is dissolved in ___ and ____ in potentiometric titration.
(A) Toulene and benzene
(B) Toulene and phenolphthalein
(C) Toulene and phenol
(D) Toulene and propanol

Nano Wires, Nano Cones and Neutralization Acidic Number MCQs
By: Prof. Dr. Fazal Rehman | Last updated: May 29, 2025

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