True or falseWhen water is heated, it changes intoice. ( )5. Air is an

1.	True or falseWhen water is heated, it changes intoice. ( )5. Air is an opaque material. ( )6. A policeman, controlling the traffic wears a mask to prevent the dust particles from entering his respiratory system through breathing. ( )7. Drains get choked due to plastics thrown by us. ( )
Answer» 1) False 2)False 3)TRUE 4)True

True or falseWhen water is heated, it changes intoice. ( )5. Air is an opaque material. ( )6. A policeman, controlling the traffic wears a mask to prevent the dust particles from entering his respiratory system through breathing. ( )7. Drains get choked due to plastics thrown by us. ( )

Answer»

1) False

2)False

4)True