Measures for the Preservation of Ozone Layer MCQs with Explanations
Practice MCQ Questions
Ques: 1
Montreal Protocol is related to the protection of:
Correct Answer:
(C) Ozone layer
The Montreal Protocol on substances that deplete the Ozone Layer (a protocol to the Vienna Convention for the Protection of the Ozone Layer) is an international treaty designed to protect the ozone layer by phasing out the production of numerous substances that are responsible for ozone depletion. It came into force on 1 January, 1989.
Ques: 2
What greenhouse gas is regulated in the Montreal Protocol?
(a) Hydrochlorofluorocarbons
(b) Chlorofluorocarbon
Correct Answer:
(C)
The Montreal Protocol, finalized in 1987, is a global agreement to protect the stratospheric ozone layer by phasing out the production and consumption of ozone-depleting substances (ODS). The main substances it controls are chlorofluorocarbons (CFCs) and hydrochlorofluorocarbons (HCFCs). These substances, while they do have some greenhouse gas properties, are primarily harmful because they deplete the ozone layer.
Ques: 3
Consider the following statements: Statement I: The European Parliament approved the Net-Zero Industry Act recentlyStatement-II: The European Union intends to achieve carbon neutrality by 2040 and therefore aims to develop all of its own clean technology by that time.Which one of the following is correct in respect of the above statements?
Correct Answer:
(C) Statement-I is correct, but Statement-II is incorrect
Statement I is correct: The European Parliament has given its approval to the Net-Zero Industry Act, which is intended to boost the European Union’s manufacturing capabilities for net-zero technologies.
However, Statement II is incorrect: The European Union's ultimate objective is to reach carbon neutrality by 2050, not 2040. The year 2040 serves as an interim target, with the aim of reducing net greenhouse gas emissions by 90% as a step toward achieving full carbon neutrality by 2050.
Ques: 4
Consider the following statements regarding Ozone Layer Preservation:
International Day for the Preservation of the Ozone Layer is celebrated on October 16 to commemorate the signing of the Montreal Protocol.
The Montreal Protocol has led to the phase-out of 99% of ozone-depleting chemicals in refrigerators, air-conditioners and many other products.
Which of the statements given above is/are correct?
Correct Answer:
(B) 2 only
The International Day for the Preservation of the Ozone Layer is celebrated on September 16th to commemorate the signing of the Montreal Protocol in 1987. This international environmental treaty aims to protect the ozone layer by phasing out the production and consumption of ozone-depleting substances. The United Nations General Assembly proclaimed this date as the International Day in 1994.
The Montreal Protocol, an international agreement, has been highly successful in phasing out 99% of ozone-depleting chemicals, which were commonly used in products like refrigerators, air conditioners, and aerosols. This has led to a significant recovery of the ozone layer.
Ques: 5
Consider the following statements regarding the global initiatives to curb ozone depletion:
Vienna convention is adopted in 1985.
Montreal protocol is adopted in 1997.
Kigali amendment 2016 will phase down consumption of HFCs.
Which of the statements given above are correct?
Correct Answer:
(D)
All of the above
The 1985 Vienna Convention for the Protection of the Ozone Layer was an international agreement in which United Nations members recognized the fundamental importance of preventing damage to the stratospheric ozone layer.
The 1987 Montreal Protocol on Substances that deplete the Ozone Layer and its succeeding amendments were subsequently negotiated to control the consumption and production of anthropogenic (ODSs) and some hydrofluorocarbons (HFCs).
The adoption of the 2016 Kigali Amendment to the Montreal Protocol will phase down the production and consumption of some HFCs and avoid much of the projected global increase and associated climate change.