Q1. Caustic soda is the common name of:
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Answer: D. Sodium hydroxide
Caustic soda is NaOH, sodium hydroxide.
Chemistry - Common Names & Formulas Questions for SSC CGL (with Answers)
8 Chemistry - Common Names & Formulas MCQs from the General Awareness section, with answers and short explanations.
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Q2. What is the chemical name of quick lime?
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Answer: D. Calcium oxide
Quick lime is calcium oxide, CaO.
Q3. 'Laughing gas' is the common name of:
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Answer: B. Nitrous oxide (N2O)
Nitrous oxide, N2O, is called laughing gas.
Q4. 'Oil of vitriol' is the old name of:
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Answer: A. Sulphuric acid
Oil of vitriol is concentrated sulphuric acid, H2SO4.
Q5. Heavy water is chemically:
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Answer: A. D2O (deuterium oxide)
Heavy water is deuterium oxide, D2O, used as a moderator in nuclear reactors.
Q6. 'Muriatic acid' is the old name of:
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Answer: B. Hydrochloric acid
Muriatic acid is an old name for hydrochloric acid, HCl.
Q7. Galena is the main ore of:
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Answer: B. Lead
Galena, lead sulphide (PbS), is the chief ore of lead.
Q8. 'Hypo', used in photography, is chemically:
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Answer: A. Sodium thiosulphate
Hypo is sodium thiosulphate, Na2S2O3.
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