Science Practice Quiz 14

Q1.Which gas is produced when granulated zinc metal reacts with sodium hydroxide solution?

A. Oxygen B. Carbon dioxide C. Nitrogen D. Hydrogen

Q2.What gas is evolved when sodium carbonate (Na2CO3) reacts with dilute hydrochloric acid (HCl)?

A. Oxygen B. Hydrogen C. Carbon dioxide D. Nitrogen

Q3.When sodium hydrogencarbonate (NaHCO3) reacts with dilute hydrochloric acid (HCl), which gas is produced?

A. Hydrogen B. Oxygen C. Carbon dioxide D. Sulfur dioxide

Q4.What is the chemical name for 'lime water' as mentioned in the context of testing for carbon dioxide?

A. Calcium carbonate B. Calcium chloride C. Calcium hydroxide D. Calcium oxide

Q5.What observation is made when carbon dioxide gas is passed through lime water?

A. Formation of a blue solution B. Formation of a white precipitate C. Evolution of hydrogen gas D. Disappearance of color

Q6.The white precipitate formed when carbon dioxide gas is passed through lime water is chemically known as?

A. Calcium chloride B. Calcium sulfate C. Calcium carbonate D. Calcium oxide

Q7.What is the reaction between an acid and a base that produces a salt and water known as?

A. Oxidation reaction B. Reduction reaction C. Neutralisation reaction D. Precipitation reaction

Q8.Which of the following correctly represents a general neutralisation reaction?

A. Base + Acid → Salt + Water B. Acid + Salt → Base + Water C. Base + Water → Acid + Salt D. Salt + Water → Acid + Base

Q9.Which of the following are different forms of calcium carbonate?

A. Gypsum, Plaster of Paris B. Limestone, chalk and marble C. Quicklime, Slaked lime D. Baking soda, Washing soda

Q10.What are the products formed when metal carbonates or hydrogencarbonates react with acids?

A. Salt and water B. Salt, carbon dioxide and water C. Salt and hydrogen gas D. Carbon dioxide and water