Mechanical pencil - Quiz
Mechanical pencil
  • 1. What primary substance is used in mechanical pencil leads instead of the toxic element lead?
A) Graphite and clay
B) Carbon and steel
C) Charcoal and wax
D) Ink and resin
  • 2. What component was introduced by Pentel in 1962 to increase lead strength?
A) Wooden fibers
B) Polymers
C) Metal alloys
D) Compressed graphite
  • 3. Which of the following describes the durability of mechanical pencil leads compared to traditional wooden pencils?
A) They have identical strength
B) They are significantly stronger
C) They are not as strong
D) They are immune to breaking
  • 4. What do polymers replace in modern mechanical pencil lead formulations?
A) Plastic
B) Graphite
C) Wax
D) Clay
  • 5. What are inexpensive, non-refillable mechanical pencils called?
A) Disposable
B) Single-use
C) Basic
D) Temporary
  • 6. What is the primary function of the Pentel Function 357 mechanical pencil?
A) It requires no manual refills
B) It offers multiple lead thicknesses in one housing
C) It uses 5.6 mm lead exclusively
D) It is entirely disposable
  • 7. Which lead sizes are considered the most common for mechanical pencils?
A) 0.2 mm and 0.3 mm
B) 1.0 mm and 2.0 mm
C) 0.1 mm and 5.6 mm
D) 0.5 mm and 0.7 mm
  • 8. What is the rarest lead size mentioned in the text?
A) 5.6 mm
B) 0.1 mm
C) 1.00 mm
D) 0.5 mm
  • 9. What was the possible first mechanical pencil released by Pentel?
A) Pentel Standard 500
B) Pentel Function 357
C) Pentel 0.1 Prototype
D) Pentel 350 E
  • 10. According to the Japanese JIS standard, what is the actual diameter range for a '0.5 mm' lead?
A) 0.55 mm to 0.58 mm
B) 0.50 mm to 0.52 mm
C) 0.60 mm to 0.65 mm
D) 0.45 mm to 0.49 mm
  • 11. How are refill leads typically stored before they are inserted into a pencil?
A) In individual boxes
B) In metallic cases
C) In plastic bags
D) In small tubes
  • 12. Why did the introduction of polymers make smaller diameter leads easier to manufacture?
A) They remove the need for graphite
B) They allow the lead to change shape
C) They make the lead transparent
D) They act as a binder to strengthen the lead
  • 13. What is the range of lead sizes available for mechanical pencils as noted in the text?
A) 0.5 mm to 2.0 mm
B) 0.2 mm to 5.6 mm
C) 0.3 mm to 0.7 mm
D) 0.1 mm to 1.0 mm
  • 14. Why do wooden pencils offer more lead protection than mechanical pencils?
A) The wood is softer than plastic
B) The lead is bonded to the wooden case
C) The lead is shorter
D) The lead is thicker
  • 15. What benefit do sub-millimeter pencils provide regarding lead capacity?
A) They use self-sharpening lead
B) They can hold multiple leads at the same time
C) They never run out of lead
D) They do not need to be refilled
  • 16. In which century were mechanical pencils first used?
A) 18th century
B) 20th century
C) 17th century
D) 19th century
  • 17. Who patented the Eversharp mechanical pencil in 1913?
A) Charles R. Keeran
B) John Isaac Hawkins
C) Sampson Mordan
D) Tokuji Hayakawa
  • 18. Which of these is a common name for a mechanical pencil in Australian English?
A) Microtip pencil
B) Drafting pencil
C) Pacer
D) Click pencil
  • 19. What is the main advantage of using a mechanical pencil for technical drawing?
A) Constant line width
B) Uses colored lead
C) Requires sharpening
D) Automatic erasing
  • 20. When was the earliest datable mechanical pencil found on the HMS Pandora wreckage?
A) 1791
B) 1822
C) 1812
D) 1776
  • 21. Who invented the pioneering mechanical pencil in Japan in 1915?
A) Tokuji Hayakawa
B) Schmidt
C) Sampson Mordan
D) Charles R. Keeran
  • 22. What did Tokuji Hayakawa start manufacturing in 1924 after his factory was destroyed?
A) Clocks
B) Radios
C) Typewriters
D) Furniture
  • 23. How does a screw-based pencil typically advance the lead?
A) Automatic spring tension
B) Pressing a button
C) Twisting a screw mechanism
D) Shaking the pencil
  • 24. Which mechanism prevents the lead from breaking by extending the guide pipe?
A) S. Mordan & Co
B) Kuru Toga
C) Eversharp
D) DelGuard system
  • 25. What does the H in the lead grading scale stand for?
A) High
B) Hardness
C) Heavy
D) Hold
  • 26. What does the B in the lead grading scale stand for?
A) Base
B) Blackness
C) Brightness
D) Bold
  • 27. What does the F in the lead grading scale stand for?
A) Fine
B) Firm
C) Flat
D) Fast
  • 28. How many grades of mechanical pencil lead are there?
A) 10
B) 8
C) 24
D) 12
  • 29. What is the range of mechanical pencil lead grades?
A) 4H-4B
B) B-4B
C) H-2H
D) HB-6B
  • 30. Which manufacturer is NOT mentioned as producing colored refill leads?
A) Pilot
B) Pentel
C) Uni-ball
D) Crayola
  • 31. Which company makes mechanical colored pencils with 5.6 mm replaceable leads?
A) Pilot
B) Koh-i-Noor
C) Uni-ball
D) Pentel
  • 32. Compared to standard wooden pencils, how many grades of lead do they have?
A) 12
B) 10
C) 6
D) 24
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