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Q56 (IAS/2004) Science & Technology › Basic Science (Physics, Chemistry, Biology) › Applied everyday chemistry Answer Verified

Consider the following statements: 1. Baking soda is used in fire extinguishers. 2. Quicklime is used in the manufacture of glass. 3. Gypsum is used in the manufacture of Plaster of Paris. Which of the statements given above is/are correct ?

Result
Your answer: —  Â·  Correct: D
Explanation

All three statements are correct. Sodium hydrogencarbonate (baking soda) has been used in soda–acid type fire extinguishers and as an extinguishing agent in some portable extinguishers [1]. Quicklime (calcium oxide, CaO) is a common component in many glass formulations as a stabilizer/flux alongside soda (sodium carbonate); sodium carbonate’s role in glass manufacture is explicitly noted, and CaO commonly complements Na2O in typical glass-making recipes (CaO’s glass role is standard industrial practice). This means quicklime is used in glass production processes [2]. Gypsum (CaSO4·2H2O) yields Plaster of Paris (the hemihydrate) on partial heating and reconverts on hydration, so gypsum is the precursor for Plaster of Paris [3].

Sources

  1. [1] Science , class X (NCERT 2025 ed.) > Chapter 2: Acids, Bases and Salts > Uses of Baking soda > p. 31
  2. [2] Science , class X (NCERT 2025 ed.) > Chapter 2: Acids, Bases and Salts > Uses of washing soda > p. 32
  3. [3] Science , class X (NCERT 2025 ed.) > Chapter 2: Acids, Bases and Salts > Plaster of Paris > p. 33
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SIMILAR QUESTIONS

CAPF · 2008 · Q113 Relevance score: 6.41

Consider the following statements : 1. Baking soda is used in fire extinguishers. 2. Quick lime is used in the manufacture of glass. Which of the statements given above is/are correct ?

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Consider the following statements: 1. Anhydrous sodium carbonate is commonly known as baking soda. 2. Baking soda is used in fire extinguishers. 3. Bleaching powder is manufactured in Hasenclever plant. Which of the statements is/are correct?

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Which of the following is not correct about Baking Soda ?

CDS-I · 2023 · Q52 Relevance score: -2.09

Which of the following statements with regard to the reaction given below are correct? CaO(s) + H2O(l) → Ca(OH)2 (aq) + Heat 1. Quicklime is used for white-washing of walls. 2. The solution of slaked lime is used for whitewashing of walls. 3. CaO reacts slowly with CO2 in air to form a thin layer of CaCO3 on walls. 4. Calcium hydroxide called 'slaked lime' is an inorganic compound. Select the correct answer using the code given below.