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