Podcast
Questions and Answers
What do you observe on the surface of zinc granules when they react with dilute sulphuric acid?
What do you observe on the surface of zinc granules when they react with dilute sulphuric acid?
- Decrease in temperature
- Formation of bubbles
- Evolution of a gas (correct)
- Discoloration of zinc granules
Why are bubbles formed in the soap solution when the gas evolved from the reaction is passed through it?
Why are bubbles formed in the soap solution when the gas evolved from the reaction is passed through it?
- The gas is flammable
- The gas reacts with the soap
- The gas is lighter than air (correct)
- The gas is denser than air
What compound is formed when a metal displaces hydrogen atoms from acids?
What compound is formed when a metal displaces hydrogen atoms from acids?
- Acid
- Salt (correct)
- Oxide
- Water
In the reaction between metal and acid, what is produced along with the salt?
In the reaction between metal and acid, what is produced along with the salt?
What is the product when granulated zinc metal reacts with sodium hydroxide solution?
What is the product when granulated zinc metal reacts with sodium hydroxide solution?
What safety precaution is specifically mentioned for Activity 2.3 in the text?
What safety precaution is specifically mentioned for Activity 2.3 in the text?
In the reaction between acids and metals, what type of gas is typically evolved?
In the reaction between acids and metals, what type of gas is typically evolved?
What state of matter are formed bubbles typically in, when passing through the soap solution?
What state of matter are formed bubbles typically in, when passing through the soap solution?
Are all metals equally reactive when they come in contact with acids?
Are all metals equally reactive when they come in contact with acids?
What causes effervescence in solutions when metals react with acids?
What causes effervescence in solutions when metals react with acids?
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