Q1. The metal that can be cut with a knife is-
- Arepentance
- BIron
- Clead
- Dsodium
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Answer: D) sodium
Metals and Their Compounds
200 MCQ questions with answers and explanations · page 1 of 8
Q2. In what should sodium metal be stored?
- Aalcohol
- Bkerosene oil
- CWater
- DHCL
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Answer: B) kerosene oil
Q3. If a piece of sodium is put in water, it
- Awill drown
- Bwill keep floating
- CFloating will burn
- Dwill give smoke
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Answer: C) Floating will burn
Q4. Yellow lamps are widely used in street lighting these days. Which of the following is used in these lamps?
- Asodium
- BNeon
- Chydrogen
- Dnitrogen
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Answer: A) sodium
Q5. The chemical formula of 'borax salt' is-
- ANa² B⁴O⁷ 10H ²O
- BNa²SO⁴10H ²O
- CNa² CO³ 10H²O
- DNaHCO³
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Answer: A) Na² B⁴O⁷ 10H ²O
Q6. The chemical formula of Glauber Salt is
- ACaSO⁴2H²o
- BNa² SO⁴ 10H²O
- CMgSO⁴7H ²O
- DZnSO⁴ 7H² O
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Answer: B) Na² SO⁴ 10H²O
Q7. Sodalime is a mixture of what?
- AKOH + CaO
- BNaOH CO
- CNa²CO³+ CaO
- DCaCO³ + NaOH
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Answer: B) NaOH CO
Q8. The chemical formula of washing soda is
- ANa² SO⁴ 10H²O
- BNaHCO³
- CNa² CO³ 10H²O
- DCa(OH)²
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Answer: C) Na² CO³ 10H²O
Q9. The chemical formula of caustic soda is
- ANaOH
- BNaCl
- CNaHCO³
- DNa²CO³
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Answer: A) NaOH
Q10. The chemical formula of sodium aluminate is
- ANaOH
- BNa²AIF⁶
- CNaAlO²
- Dnone of these
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Answer: C) NaAlO²
Q11. The chemical formula of baking soda is—
- ANa²CO³
- BNa²CO³ H²O
- CNa² CO³ 10H²O
- DNaHCO³
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Answer: D) NaHCO³
Q12. The chemical formula of Hypo is-
- ANa² S² O³ SH²O
- BNa²S²O³ 3H³O
- CNa²S² O³ 2H²O
- DNa²SO⁴ 10H² O
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Answer: A) Na² S² O³ SH²O
Q13. The molecular formula of common salt is
- ANaCl
- BNaNO²
- CMgCl²
- DCaCl²
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Answer: A) NaCl
Q14. Which of the following is the chemical name of common salt?
- Acalcium carbonate
- Bsodium carbonate
- Csodium chloride
- Dnone of these
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Answer: C) sodium chloride
Q15. The chemical name of hypo commonly used in photography is
- Asodium thiosulfate
- Bsilver nitrate
- Csodium nitrate
- DSilver Iodide
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Answer: A) sodium thiosulfate
Q16. What is the chemical name of baking soda?
- Asodium carbonate
- Bsodium bicarbonate
- Csodium acetate
- Dsodium hydroxide
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Answer: B) sodium bicarbonate
Q17. What is the popular name of 'washing soda'?
- Acalcium carbonate
- BMagnesium Carbonate
- Csodium carbonate
- Dpotassium carbonate
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Answer: C) sodium carbonate
Q18. Sodium thiosulphate is used in photography.
- Adarkening the image
- Bwhitening the image
- Cto separate silver bromide by dissolving it
- DTo make the image blur-free
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Answer: C) to separate silver bromide by dissolving it
Q19. The salt found in the highest quantity in sea water is
- Asodium chloride
- Bzinc oxide
- Csodium carbonate
- Dmagnesium chloride
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Answer: A) sodium chloride
Q20. The common name of the chemical compound having the formula NaOH is?
- Acaustic soda
- Bcaustic potash
- CSoda Ash
- Dsodium hydroxide
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Answer: A) caustic soda
Q21. Industrially manufactured by the Solvay process
- Aammonia
- Bchlorine
- Csodium carbonates
- Dsulfuric acid
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Answer: C) sodium carbonates
Q22. Baking soda is added to flour because
- AThis makes the rotis tasty.
- BLess water is required to knead the dough
- CBaking soda releases CO², which makes the bread rise.
- DAll of the above
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Answer: C) Baking soda releases CO², which makes the bread rise.
Q23. What is the baking powder used in making double roti?
- Asodium carbonate
- Bsodium bicarbonate
- Csodium sulphate
- Dsodium chloride
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Answer: B) sodium bicarbonate
Q24. Sodium bicarbonate is useful in extinguishing fire because—
- AWhen heated, it decomposes and produces carbon dioxide, which extinguishes the fire.
- BIt acts as a cover for the fire.
- CIt releases water which extinguishes the fire
- DThis produces foam, which extinguishes the fire.
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Answer: A) When heated, it decomposes and produces carbon dioxide, which extinguishes the fire.
Q25. Which of the following salts contributes the most to the salinity of sea water?
- Acalcium sulphate
- Bmagnesium chloride
- Cmagnesium chloride
- Dsodium chloride
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Answer: D) sodium chloride