Chemistry Quiz
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Questions and Answers

Which scientist first prepared hydrogen chloride gas?

  • Glauber (correct)
  • Humphrey Dary
  • Both Glauber and Humphrey Dary
  • None of the above
  • What is the chemical formula for hydrogen chloride?

  • HCl2
  • HCl (correct)
  • H2Cl2
  • H2Cl
  • What type of compound is hydrogen chloride?

  • Ionic compound
  • Hydrocarbon compound
  • Metallic compound
  • Covalent compound (correct)
  • How is hydrogen chloride gas synthesized?

    <p>By reacting hydrogen and chlorine in sunlight</p> Signup and view all the answers

    What are the reactants used for the laboratory preparation of hydrogen chloride gas?

    <p>Sodium chloride and sulfuric acid</p> Signup and view all the answers

    What is the product formed when sodium chloride reacts with sulfuric acid?

    <p>Sodium sulfate</p> Signup and view all the answers

    What is the purpose of passing hydrogen chloride gas through concentrated sulfuric acid before collection?

    <p>To dry the gas</p> Signup and view all the answers

    Which of the following is true about hydrogen chloride gas?

    <p>It is highly soluble in water</p> Signup and view all the answers

    What happens when hydrogen chloride gas is dissolved in water?

    <p>It produces a strong monobasic acid</p> Signup and view all the answers

    Which of the following metals can displace hydrogen from hydrogen chloride gas?

    <p>Magnesium</p> Signup and view all the answers

    What happens when dry hydrogen chloride gas is passed through phosphorous pentaoxide (PO5)?

    <p>It undergoes a chemical reaction</p> Signup and view all the answers

    How can you identify if a gas jar is filled with hydrogen chloride gas?

    <p>Dip a gas rod in ammonium hydroxide near its mouth</p> Signup and view all the answers

    What is the physical property of hydrogen chloride gas?

    <p>It is a colorless gas with a pungent smell</p> Signup and view all the answers

    What is the chemical property of hydrogen chloride gas?

    <p>It is neither combustible nor a supporter of combustion</p> Signup and view all the answers

    Which of the following reactions produces a dense white fume?

    <p>NH4OH + HCl → NH4CI + H2O</p> Signup and view all the answers

    What is the color of the precipitate formed when hydrochloric acid reacts with silver nitrate solution?

    <p>Curdy white</p> Signup and view all the answers

    What is the solubility of the precipitate formed when hydrochloric acid reacts with lead nitrate solution?

    <p>Soluble in hot water but insoluble in cold water</p> Signup and view all the answers

    What color is the gas produced when hydrochloric acid reacts with manganese (IV) oxide and concentrated hydrochloric acid?

    <p>Greenish yellow</p> Signup and view all the answers

    What is the effect of hydrochloric acid on moist blue litmus paper?

    <p>Turns it red and then bleaches it to white</p> Signup and view all the answers

    What is the effect of hydrochloric acid on moist starch iodide paper?

    <p>Turns it blue-black</p> Signup and view all the answers

    What is hydrochloric acid extensively used for?

    <p>Manufacture of dyes, drugs, paints, and preparation of aqua-regia</p> Signup and view all the answers

    In which industry is hydrochloric acid used for calico printing?

    <p>Calico printing industry</p> Signup and view all the answers

    In which industry is hydrochloric acid used for tanning?

    <p>Tanning industry</p> Signup and view all the answers

    Which indicator turns blue litmus paper red?

    <p>Hydrochloric acid</p> Signup and view all the answers

    Which gas is liberated when dilute hydrochloric acid reacts with metallic carbonates?

    <p>Carbon dioxide</p> Signup and view all the answers

    What is the product of the reaction between hydrochloric acid and sodium thiosulphate?

    <p>Sodium chloride</p> Signup and view all the answers

    What is the color of the precipitate formed when hydrochloric acid reacts with silver nitrate?

    <p>White</p> Signup and view all the answers

    What is the chemical formula of aqua regia?

    <p>HClO4</p> Signup and view all the answers

    What gas is evolved when dilute hydrochloric acid reacts with metallic sulphides?

    <p>Hydrogen</p> Signup and view all the answers

    What is the oxidizing agent that converts concentrated hydrochloric acid to chlorine gas?

    <p>Potassium dichromate</p> Signup and view all the answers

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