Listening Part 6: Multiple-choice:Multiple
PTE Listening Part 6- Sample 10: Multiple Choice Question Multiple Answers
Baking soda is alkaline; the acid used in baking powder avoids a metallic taste when the chemical change during baking creates sodium carbonate. It has weak disinfectant properties, and it may be an effective fungicide against some organisms. Because baking soda will absorb musty smells, it has become a reliable method for used book sellers when making books less malodorous. Sodium bicarbonate can be used to extinguish small grease or electrical fires by being thrown over the fire, as heating of sodium bicarbonate releases carbon dioxide. However, it should not be applied to fires in deep fryers; the sudden release of gas may cause the grease to splatter. What uses of baking powder have been mentioned by the speaker? Chemical change during baking Fungicide against organisms Absorbing musty smells Storing sodium bicarbonate Deep fryer fire extinguisher Answer: Fungicide against organisms Absorbing musty smells