The protocol amended in 1990 to protect the Ozone layer by completely phasing out CFC is :

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AKyoto Protocol

BCartagena Protocol

CStockholm Convention

DMontreal Protocol

Answer:

The original Montreal Protocol, signed in 1987, was the first step in international efforts to protect stratospheric ozone.
The London Amendment (1990) changed the ozone-depleting substances emission schedule by requiring the complete phaseout of CFCs, halons, and carbon tetrachloride by 2000 in developed countries, and by 2010 in developing countries.
Methyl chloroform was also added to the list of controlled ozone-depleting substances, with phaseout in developed countries targeted in 2005, and in 2015 for developing countries.

Related Questions:

Which of the following is an incorrect outcome of a disaster as defined by the Disaster Management Act, 2005, concerning human impact?

Significant loss of life is an outcome.
Human suffering is a recognized outcome.
The act specifies that only physical injuries, not psychological suffering, are considered.
It explicitly mentions significant loss of life or human suffering.

Which of the following statements correctly describe "Disaster Management" according to the Disaster Management Act, 2005?

It is primarily a reactive process focusing on post-disaster relief operations.
It involves a continuous and integrated process of planning, organizing, coordinating, and implementing essential measures.
Capacity building is an integral part of disaster management efforts.
It strictly excludes rehabilitation and reconstruction efforts, focusing only on immediate response.