What is the chemical name of the common mineral salt excreted in human sweat?
Show answer Hide answer
Answer: C. Sodium Chloride
Explanation
Sodium chloride is the primary mineral salt excreted in human sweat during physical exertion. Sweat glands secrete water containing dissolved electrolytes, with sodium chloride being the most abundant. This saline composition gives human perspiration its characteristic salty taste when it reaches skin. Sodium chloride is an ionic compound composed of sodium and chlorine ions in a one to one ratio. Electrolyte balance in bodily fluids is crucial for proper nerve conduction and muscle contraction. Sweating helps the human body regulate internal core temperature through evaporative cooling.
Athletes must replenish lost sodium chloride and water during intense endurance training to prevent cramps. Medical tests of sweat salinity are commonly used to help diagnose cystic fibrosis in children. Common salt has been historically vital for human nutrition, food preservation, and chemical industries. Calcium oxalate is typically associated with kidney stone formation rather than sweat excretion. Potassium sulphate is not the major mineral salt found in human sweat secretions. Iron sulphate is an iron supplement used medicinally and is not excreted heavily in sweat.
- Subject
- Everyday Science
- Category
- Everyday Science
- Topic
- —
- Difficulty
- medium
Related questions
Q1. Which substance exhibits the highest degree of aqueous solubility:__________?
Show answer Hide answer
Answer: D. Sugar
Sugar molecules feature numerous hydroxyl groups that form strong hydrogen bonds with surrounding water molecules easily. This high polarity allows sucrose to dissolve in aqueous solutions in exceptionally large quantiti...
Q2. What pharmacological classification applies to drugs that block sensory nerve transmission to numb pain?
Show answer Hide answer
Answer: D. Anaesthetics
Anaesthetics temporarily block nerve signal transmission to eliminate sensation. Medical professionals administer these drugs to numb specific areas for pain relief. Patients undergo surgery painlessly because local or g...
Q3. Under what physical conditions do most gases acquire the ability to conduct electricity:
Show answer Hide answer
Answer: B. Very low pressure
Gases acquire the ability to conduct electricity under conditions of very low pressure and high voltage. Low pressure reduces molecular collisions, allowing electrons to travel freely and ionize gas particles. This ioniz...
Q4. NASA researchers recently identified spectroscopic evidence of water vapor on which Jovian moon?
Show answer Hide answer
Answer: B. Europa
Space telescope observations detected faint water vapor plumes erupting from the icy crust of Europa. Europa hides a vast global liquid water ocean beneath its thick outer shell of frozen surface ice. Spectroscopic analy...
Q5. Name the specific animal capable of surviving its entire life cycle without consuming liquid water?
Show answer Hide answer
Answer: C. Kangaroo rat
Kangaroo rats inhabit arid deserts without access to drinking water. Their highly efficient kidneys produce concentrated urine to conserve body fluids. Metabolic water derived from seeds supplies all their required moist...
Q6. Identify the renowned Pakistani physicist who collaborated under the academic guidance of Albert Einstein?
Show answer Hide answer
Answer: B. Riazuddin Siddiqui
Riazuddin Siddiqui was a prominent Pakistani theoretical physicist who made significant contributions to particle physics. He worked closely with renowned Nobel laureate Abdus Salam on advanced quantum and particle physi...