GK: Class 12 General Q&A · Page 27
3,658 free answers on GK (General) for Class 12 students, across CBSE, ICSE and State boards.
Question & Answer
Questions
- GeneralClass 12All
Should I get 2E or 4E
Choose 2E for moderately wide feet, 4E for very wide or high-volume feet. Trying shoes late in the day helps account for natural swelling and avoids undersizing width.
- GeneralClass 12All
How wide is 4E
4E is extra-extra-wide. It’s designed for very wide feet, swelling conditions, or orthotic use where standard widths cause pressure.
- GeneralClass 12All
Is EE bigger than E
Yes, EE is wider than E. Width letters increase alphabetically. EE (or 2E) provides more forefoot space than E.
- GeneralClass 12All
What size is 300 mm
300 mm equals 30 cm or about 11.8 inches. In footwear, this measurement refers to foot length, not shoe length. Shoes are always slightly longer to allow toe space.
- GeneralClass 12All
How do I size shoes
Measure your foot standing, at the end of the day, from heel to longest toe. Always size based on length first, then width. If between sizes, sizing up is usually safer.
- GeneralClass 12All
What is a C in shoes
A C width is narrow, typically used in men’s shoes. It’s narrower than standard D width and suits slim feet that experience heel slip in regular shoes.
- GeneralClass 12All
What size shoe is 300mm
A 300 mm foot length generally corresponds to a US men’s size 12. Sizing varies slightly by brand and shoe type, so foot length should always be checked against the manufacturer’s chart.
- GeneralClass 12All
How tall is a 164 cm person
A height of 164 cm equals about 5 feet 4½ inches. In everyday usage, this is typically described as 5'4" or 5'5", depending on rounding preference. This height falls well within average ranges globally and is commonly used as a reference point in apparel sizing.
- GeneralClass 12All
Who decided a mile is 5280 feet
This was formalized in England in the 16th century. The mile combined Roman distance units with English land-measurement practices, resulting in the now-familiar 5,280 feet.
- GeneralClass 12All
Why is 12 called a foot
Twelve was chosen because it’s highly divisible. It divides evenly into halves, thirds, and quarters, making it useful in trade and construction long before decimals were common.
- GeneralClass 12All
Why is a foot called a foot
The term comes from early human-based measurement. Historically, a “foot” was based on the length of a human foot. While crude, it was practical before standardized tools existed.
- GeneralClass 12All
What are the 7 main units of measurement
The seven SI base units are: meter, kilogram, second, ampere, kelvin, mole, and candela. All other metric units are derived from these, which is why the system is scalable and precise.
- GeneralClass 12All
Which countries still use miles
Countries like the United States and United Kingdom still use miles for road distances. The UK uses miles for driving but metric for most other measurements, making it a partial exception rather than a full imperial user.
- GeneralClass 12All
Why do Americans use feet instead of meters
This is largely due to historical inertia. Measurement systems were established before the metric system existed. Converting infrastructure, laws, and public habits would be costly and disruptive.
- GeneralClass 12All
Why won't America switch to metric
The barrier is economic and cultural, not technical. Road signs, manufacturing standards, and education systems would require massive overhaul. Since the current system functions adequately, there’s little political urgency.
- GeneralClass 12All
Is it rare to be 7 ft tall
Yes, being 7 feet tall is extremely rare. Only a tiny fraction of the global population reaches this height, often due to specific genetic or medical factors. Most people over 7 feet are statistical outliers.
- GeneralClass 12All
What is the SI system
The SI system (International System of Units) is the global standard for measurement. It includes base units like meter, kilogram, and second. SI ensures consistency, accuracy, and global interoperability in science and engineering.
- GeneralClass 12All
Is 167 cm 5'6"
Yes, 167 cm is essentially 5 feet 6 inches. The exact conversion is 5 ft 5.7 in, which is universally rounded to 5'6". This rounding is accepted across healthcare, fashion, and identification standards.
- GeneralClass 12All
Is 200 cm 6'6"
No, 200 cm is closer to 6 feet 7 inches, not 6'6". 6'6" equals about 198 cm. This difference matters in sports, medical records, and door or bed sizing where precision is important. Do the USA use imperial or metric The United States uses a hybrid system. Daily life relies on U.S. customary units (feet, miles, pounds), while science, medicine, and the military use metric. This dual system is historical rather
- GeneralClass 12All
How tall is the top 1% of men
The top 1% of men are typically 6 feet 4 inches (193 cm) or taller. Exact cutoffs vary by country, but crossing the 193–195 cm range places someone in the extreme upper tail of height distribution worldwide.