1. SO^2

2. H^2O^2

3. Sncl^2

4. CO

1. Reactive

2. Acid

3. Basic

4. Disperse

1. Hydrogen bond

2. Physical bond

3. Co-valent bond

4. lonic bond

1. Twill

2. Interlock

3. Plain

4. Jacquirid

1. 4.2

2. 420

3. 0.42

4. 42