Nano Wires, Nano Cones and Neutralization Acidic Number MCQs

1. In ___, the nan-wires are used.

(A) Capacitors

(B) Transistors

(C) Resistors

(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^-8 m

(C) 10^-9 m

(D) 10^-3 m

4. ____ are the superconducting wires.

(A) Pt

(B) Ni

(C) Au

(D) YBCO

5. In ____, a suspended nano-wire is produced.

(A) Air medium

(B) Low vacuum chamber

(C) High vacuum chamber

(D) Vacuum

6. For welding purposes, those nanometers whose diameters are less than ___ are used.

(A) 30 nm

(B) 20 nm

(C) 40 nm

(D) 10 nm

7. ______ of the lubricating oil cannot be given by the neutralization number.

(A) Moisture level

(B) Corrosive nature

(C) Amount of base

(D) Amount of acid

8. ______ are the preferred opening angles of nanocones.

(A) 20, 30, 40

(B) 20, 40, 50

(C) 20, 40, 60

(D) 20, 40, 80

9. _____ is formed by the fatty oils.

(A) Glycerol

(B) Ethanol

(C) Glycerine

(D) Glycerol

10. With time acid content ____

(A) Increases

(B) Becomes zero

(C) Remains constant

(D) Decreases

11. The next step is to build ___ if the pn_junctions were built with nano-wires.

(A) Logic gates

(B) Transducers

(C) Resistors

(D) Transistors

12. Due to the presence of ____ the blended oils contain the higher values.

(A) Additives

(B) Catalyst

(C) Salts

(D) Reagents

13. Due to ____, the neutralization number is increased.

(A) Contamination

(B) Catalysis

(C) Hydrolysis

(D) Pureness

14. Due to ____, the darkening of the oil color takes place.

(A) Hydrolysis

(B) Oxidation

(C) Reduction

(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 0.01N KOH taken * 56) / (Wu)

(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 0.1N KOH used * 56) / (Wt)

16. To indicate the progress of ____ the periodic determination of acid number is used.

(A) Oxidation number

(B) Reduction number

(C) Acidic number

(D) Neutralisation number

17. The acid value must be less than ____ of the lubricating oil.

(A) 1

(B) 0.7

(C) 0.1

(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) Spectroscopic methods

(D) Catalysis

20. ___ in lubricating oil is the reason of corrosion problems.

(A) Potassium chloride

(B) Carbon dioxide

(C) Naphthenic acid

(D) Sodium chloride

21. The sample is dissolved in ___ and ____ in potentiometric titration.

(A) Toulene and benzene

(B) Toulene and propanol

(C) Toulene and phenol

(D) Toulene and phenolphthalein