Overview: List of Chemical Formulas and their Common Names
SSC CGL, SSC CHSL, RRB NTPC, RRB Group D aur State PSC exams me Chemistry section se Chemical Formulas and their Common Names par 1 se 2 questions direct match-the-following ya objective format me puche jaate hain. Baking Soda, Washing Soda, Bleaching Powder, Plaster of Paris, Quick Lime, Slaked Lime, aur Blue Vitriol jaise common chemicals ke chemical formulas aur IUPAC names aspirants ke liye must-know topics hain.
Key Exam Highlights Covered in this Chemical Formulas Module
- Everyday Sodium Compounds: Baking Soda (NaHCO3), Washing Soda (Na2CO3·10H2O), Caustic Soda (NaOH), aur Common Salt (NaCl).
- Calcium & Lime Family: Quick Lime (CaO), Slaked Lime [Ca(OH)2], Limestone/Chalk (CaCO3), aur Bleaching Powder [CaOCl2].
- Sulphates & Vitriols: Green Vitriol (FeSO4·7H2O), Blue Vitriol (CuSO4·5H2O), White Vitriol (ZnSO4·7H2O), aur Epsom Salt (MgSO4·7H2O).
- Hydrated Minerals: Plaster of Paris (CaSO4·½H2O) aur Gypsum (CaSO4·2H2O) ke water crystallization ratios.
PDF Material Details
| Attribute | Specification Details |
|---|---|
| Topic Name | List of Chemical Formulas and their Common Names |
| Category | General Science — Inorganic & Applied Chemistry |
| Language | English / Hindi Mix (Aspirant Friendly) |
| Target Exams | RRB NTPC, SSC CGL, SSC CHSL, RRB JE, State PSCs |
| Core Focus | Common Chemical Names, Molecular Formulas, Water of Crystallization & PYQs |
Practice MCQs on Chemical Formulas & Names
Previous year exam trends par based niche diye gaye 15 important MCQs solve karein:
Q1. What is the chemical formula of Baking Soda?
Check Answer
Answer: NaHCO3 (Sodium Hydrogen Carbonate / Sodium Bicarbonate).
Q2. What is the chemical formula of Plaster of Paris (POP)?
Check Answer
Answer: CaSO4·½H2O (Calcium Sulphate Hemihydrate). It is obtained by heating Gypsum at 373 K.
Q3. What is the chemical name and formula of Bleaching Powder?
Check Answer
Answer: CaOCl2 (Calcium Oxychloride / Calcium Hypochlorite).
Q4. Which chemical compound is commonly known as Quick Lime?
Check Answer
Answer: CaO (Calcium Oxide).
Q5. What is the formula of Slaked Lime (Lime Water)?
Check Answer
Answer: Ca(OH)2 [Calcium Hydroxide].
Q6. Blue Vitriol is the common name for which compound?
Check Answer
Answer: CuSO4·5H2O (Copper Sulphate Pentahydrate).
Q7. What is the chemical formula of Laughing Gas?
Check Answer
Answer: N2O (Nitrous Oxide / Dinitrogen Monoxide).
Q8. What is the chemical formula of Caustic Potash?
Check Answer
Answer: KOH (Potassium Hydroxide).
Q9. What is the chemical formula of Gypsum?
Check Answer
Answer: CaSO4·2H2O (Calcium Sulphate Dihydrate).
Q10. Green Vitriol has the chemical formula:
Check Answer
Answer: FeSO4·7H2O (Ferrous Sulphate Heptahydrate).
Q11. What is Dry Ice chemically?
Check Answer
Answer: Solid Carbon Dioxide (Solid CO2). It directly sublimes into gas without becoming liquid.
Q12. What is the formula of Heavy Water, used as a moderator in nuclear reactors?
Check Answer
Answer: D2O (Deuterium Oxide).
Q13. What is the common name of Sodium Carbonate Decahydrate (Na2CO3·10H2O)?
Check Answer
Answer: Washing Soda.
Q14. What is the chemical formula of Caustic Soda?
Check Answer
Answer: NaOH (Sodium Hydroxide).
Q15. Potash Alum (Fitkari) has which chemical formula?
Check Answer
Answer: K2SO4·Al2(SO4)3·24H2O (Potassium Aluminium Sulphate).
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FAQs: List of Chemical Formulas and their Common Names
Q1: What is the difference between Baking Soda and Baking Powder?
Ans: Baking soda is pure Sodium Bicarbonate (NaHCO3), whereas Baking Powder is a dry mixture of Baking Soda along with a mild edible acid like Tartaric acid and starch.
Q2: What is the relationship between Gypsum and Plaster of Paris?
Ans: When Gypsum (CaSO4·2H2O) is carefully heated at 373 K (100°C), it loses three-fourths of its water of crystallization and converts into Plaster of Paris (CaSO4·½H2O).
Q3: What are Vitriols in Chemistry?
Ans: Vitriols are hydrated sulphate salts of metals with high industrial use, such as Blue Vitriol (CuSO4·5H2O), Green Vitriol (FeSO4·7H2O), and White Vitriol (ZnSO4·7H2O).
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