Q121. The country where paper recycling was initiated in the world is
A. UK
B. USA
C. Germany
D. France
Answer – B. USA
Explanation-
Q122. The electric arc furnace is used for the recycling of
A. Cu
B. Zn
C. Fe
D. Cr
Answer – C. Fe
Explanation-The electric arc furnace is primarily used for the recycling of iron (Fe). An electric arc furnace is a type of furnace that uses an electric arc to heat and melt metals. It is commonly used in the steel industry for recycling scrap iron and producing new steel. The high temperatures generated by the electric arc facilitate the melting of iron scrap, allowing it to be transformed into molten metal for further processing.
Q123. CITES became effective from the year
A. 1970
B. 1975
C. 1980
D. 1985
Answer –B. 1 July 1975
Explanation-
The Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES) is an international agreement between governments. Its goal is to ensure that international trade in specimens of wild animals and plants does not threaten their survival.
CITES was drafted as a result of a resolution adopted in 1963 at a meeting of members of the International Union for Conservation of Nature (IUCN). The text of the Convention was finally agreed at a meeting of representatives of 80 countries in Washington, D.C., United States of America, on 3 March 1973, and on 1 July 1975 CITES entered in force.
Q124. Mulching prevents the loss of
A. microbes
B. moisture
C. mineral
D. organic matter
Answer:
Explanation: Mulching prevents the loss of moisture. Mulching refers to the practice of covering the soil surface with a layer of material, such as organic mulch or plastic, to conserve moisture and protect the underlying soil. By acting as a barrier, mulch helps to reduce evaporation of water from the soil, thus preventing moisture loss. Additionally, mulch also helps to suppress weed growth, regulate soil temperature, and improve soil fertility as it breaks down over time.
Answer – B. moisture
Explanation-
Q125. The following waste comes under the red category:
A. metal
B. drug
C. oil waste
D. food waste
Answer: B. drug
Explanation: The waste that comes under the red category is drug waste. The term “red category” typically refers to hazardous or biomedical waste, which includes waste materials generated from medical or pharmaceutical activities. Drug waste, such as expired or unused medications, falls under the red category due to its potential hazards and the need for special handling and disposal methods to prevent environmental contamination or misuse.
Answer –
Explanation-
Q126. The ideal temperature for composting is
A. 300C – 400C
B. 400C – 500C
C. 500C – 600C
D. 600C – 700C
Answer – C. 500C – 600C
Explanation-
The ideal temperature for composting is generally considered to be between 50°C and 60°C (122°F – 140°F). Composting is a natural process of decomposing organic waste materials, such as kitchen scraps, yard trimmings, and agricultural residues, into nutrient-rich compost. The high temperatures within this range promote the growth and activity of beneficial microorganisms, accelerating the decomposition process and effectively breaking down the organic matter into stable compost.
Q127. The disinfection of drinking water by municipalities is mostly by
A. Chlorination
B. Bromination
C. Boiling
D. UV radiation
Answer – A. Chlorination
Explanation-
The disinfection of drinking water by municipalities is mostly done by chlorination. Chlorination is the process of adding chlorine or chlorine compounds to water in order to destroy or inactivate pathogenic microorganisms that can cause waterborne diseases. Chlorine is a commonly used disinfectant due to its effectiveness in killing a wide range of harmful bacteria, viruses, and other microorganisms. It is widely employed by municipalities to ensure the safety and microbial quality of drinking water.
Q128. Indian Board of Wildlife was established in
A. 1932
B. 1952
C. 1962
D. 1972
Answer – B. 1952
Explanation-In 1952, the Government of India established the Indian Board for Wildlife (IBWL) as an advisory body, with the Prime Minister serving as its chairperson. The primary objective of the IBWL was to provide guidance and advice on wildlife conservation efforts. Subsequently, the Wildlife (Protection) Act of 1972 was enacted to ensure comprehensive legal protection for wildlife in India.
Q129. Bhagabatpur project is for breeding
A. Marsh Crocodile
B. Tigers
C. Blackbuck
D. Dholes
Answer – A. Marsh Crocodile
Explanation-The Bhagabatpur project is for breeding Marsh Crocodiles. The Bhagabatpur Crocodile Project is located in the Bhagabatpur region of West Bengal, India. It is a conservation initiative aimed at protecting and breeding the endangered Indian Marsh Crocodile (Crocodylus palustris). The project involves captive breeding, habitat restoration, and public awareness programs to conserve this species and its fragile ecosystem.
Q130. Maximum energy consumption in Asia is by
A. India
B. China
C. Japan
D. Pakistan
Answer – B. China
Explanation-The maximum energy consumption in Asia is by China. China is the world’s most populous country and has a rapidly growing economy, resulting in high energy demand. Due to its large population and extensive industrial and manufacturing sectors, China’s energy consumption surpasses that of other Asian countries. It has a significant reliance on coal as an energy source, although efforts are being made to transition towards cleaner and renewable energy alternatives.
