Chapter 18, Chemistry in our Life

Answer the following question by choosing the correct option:

1. TNT is a well-known explosive. What does the abbreviation TNT stand for? 

• Trinitrotoluene 
• Trinitrotetralene

Ans. Trinitrotoluene

2. We use paper everyday, which is made up of a natural polymer. What is the name of this polymer? 

• Teflon
• Cellulose  

Ans. Cellulose

3. What is Vitamin C also known as?

• Ascorbic acid
• Salicylic acid 

Ans. Ascorbic Acid

4. The symbol Au represent the element 'Aurum'. What is Aurum more commonly known as? 

• Platinum
• Gold

Ans. Gold

5. What is an atom or molecule with net electric charge on it called? 

• Diatom
• Ion 

Ans. Ion

6. What is the name given to the substances that are initially involved in a chemical reaction? 

• Reactants
• Catalysts

Ans. Reactants

7. Which is the densest state of matter?

• Liquid
• Solid
• Gas

Ans. Solid

8. What is the term used for positive and negative ions produced when a substance breaks apart in a solution? 

• Cations
• Anions
• Birions

Ans. Birions

9. What is the first element in the periodic table? 

• Lithium
• Hydrogen

Ans. Hydrogen

10. What is the most important ore of aluminium? 

• Calcite
• Bauxite

Ans. Bauxite