1 Carat equals __________?
Show answer Hide answer
Answer: A. 0.2 g
Explanation
One metric carat is an internationally standardized unit of mass used for measuring gemstones. By formal definition, a single carat is equivalent to exactly two hundred milligrams. Converting milligrams to grams yields the precise numerical value of zero point two grams. The word carat originates from the ancient practice of using carob tree seeds as counterweights. Modern gemological standards established the metric carat in nineteen hundred and seven globally. Precision scales in jewelry stores measure precious stones down to thousandths of a carat.
Diamond and gemstone valuation relies directly on accurate measurements of mass and purity. Consumers purchasing engagement rings encounter carat weight as one of the four essential grading factors. Physics and chemistry problems frequently require unit conversions involving grams and milligrams. Option B suggests a mass of zero point three grams which exceeds the standard carat definition. Option C proposes zero point four grams representing twice the established international metric mass. Option D offers zero point five grams which corresponds to half a gram rather than one carat.
- Subject
- Everyday Science
- Category
- Everyday Science
- Topic
- —
- Difficulty
- medium
Related questions
Q1. 1 nanometer = ?
Show answer Hide answer
Answer: C. 10-9 meter
The metric prefix nano denotes a scaling factor of ten to the minus nine. Mathematical conversion rules establish that one nanometer equals ten to minus nine meters. Scientific notation uses these negative exponents to r...
Q2. _______ is designated as folic acid.
Show answer Hide answer
Answer: C. Vitamin B9
Vitamin B9 is the recognized chemical designation for folate and folic acid. Biochemical nomenclature classifies this specific nutrient under the B complex group. Synthetic dietary supplements of folate are universally l...
Q3. _________ houses the ozone layer.
Show answer Hide answer
Answer: B. Exosphere
The ozone layer is primarily housed within the stratosphere, not the exosphere.
Q4. _________ is the atmospheric stratum filtering out the majority of solar ultraviolet radiation received by Earth.
Show answer Hide answer
Answer: B. Stratosphere
The stratosphere contains a high concentration of ozone molecules that absorb harmful solar radiation. Atmospheric layering places the stratosphere directly above the troposphere surrounding our planet. Filtering out ult...
Q5. _________ spans from the upper troposphere to the lower boundary of the mesosphere.
Show answer Hide answer
Answer: C. Stratosphere
The stratosphere spans upward from the upper troposphere to the mesosphere boundary. Atmospheric layers are defined by distinct temperature gradients and altitude boundaries. The stratopause marks the upper limit where t...
Q6. __________ encompasses the ozone layer.
Show answer Hide answer
Answer: B. Stratosphere
The stratosphere contains the highest concentration of atmospheric ozone molecules. Choosing option B correctly identifies the atmospheric layer housing the ozone shield. This layer absorbs harmful ultraviolet radiation...