The National Green Tribunal has asked Delhi Government to stop unauthorized sand mining on the ________ riverbed.

a. Yamuna

b. Ganga

c. Indus

d. Kosi

ANSWER: Yamuna

Explanation:

The tribunal came down heavily on the Delhi government for permitting sand mining in the name of dredging and directed the concerned authorities to stop illegal mining on the Yamuna river bed and its surrounding areas.