कुछ पदार्थ जिनका निपटान करना मुश्किल है: , Some substances that are difficult to dispose off:

A. कांच (Glass)

B. प्लास्टिक (Plastics)

C. धातुओं (Metals)

D. ये सभी (All of these)

Correct Answer :

D. ये सभी

Explanation

Glass, plastics, metals are difficult to dispose off.