The International System of Units (in French Le Systeme International d’Unités — abbreviated as SI) was established by the 11th General Conference on Weights and Measures (CGPM from Conference Generaledes Poids et Measures).
1. What does "SI" stand for in the context of units?
a) Standard International
b) System of International Units
c) International System of Units
d) International Standard Units
Answer: c) International System of Units
2. Which conference established the International System of Units (SI)?
a) 10th General Conference on Weights and Measures
b) 11th General Conference on Weights and Measures
c) 12th General Conference on Weights and Measures
d) 9th General Conference on Weights and Measures
Answer: b) 11th General Conference on Weights and Measures
3. What is the French name for the International System of Units (SI)?
a) Le Système de Mesures Internationales
b) Le Système International d’Unités
c) Les Unités Internationales
d) Le Système Universel de Mesures
Answer: b) Le Système International d’Unités
4. What is the full form of CGPM?
a) Conference Generalised on Physical Measures
b) Conference General des Poids et Mesures
c) Conference Government of Weights and Measures
d) Conference of Global Physics and Measurements
Answer: b) Conference General des Poids et Mesures
5. What was the diplomatic treaty that created the CGPM called?
a) Convention of Units and Measures
b) Meter Convention
c) Treaty of Weights and Measures
d) International Measurement Agreement
Answer: b) Meter Convention
6. In which city was the Metre Convention signed?
a) London
b) Paris
c) Rome
d) New York
Answer: b) Paris
7. When was the Metre Convention signed?
a) 1875
b) 1870
c) 1880
d) 1890
Answer: a) 1875
8. How many base units are there in the SI system?
a) 5
b) 7
c) 10
d) 12
Answer: b) 7
9. What do the base units of the SI system pertain to?
a) Derived quantities
b) Fundamental scientific quantities
c) Measurement units for temperature
d) Physical quantities only
Answer: b) Fundamental scientific quantities
10. Which of the following is an example of a derived physical quantity?
a) Mass
b) Length
c) Speed
d) Time
Answer: c) Speed
11. What is the primary role of the SI system?
a) To standardize units for scientific research
b) To define how scientific quantities should be measured
c) To measure the weight of different materials
d) Both a and b
Answer: d) Both a and b
12. What kind of organisation is the CGPM?
a) A non-governmental organization
b) A governmental organization
c) An intergovernmental treaty organisation
d) A private research organization
Answer: c) An intergovernmental treaty organisation
13. What was the purpose of the Metre Convention signed in 1875?
a) To set global policies on science
b) To define a system of physical measurement standards
c) To regulate global trade
d) To develop new units of measurement
Answer: b) To define a system of physical measurement standards
14. Which of the following quantities cannot be directly measured using SI base units?
a) Speed
b) Volume
c) Density
d) Mass
Answer: a) Speed
15. Derived units in the SI system can be made from which of the following?
a) Only length
b) Only time
c) Base units
d) Non-scientific units
Answer: c) Base units
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