യൂട്രോഫിക്കേഷൻ സംഭവിക്കുന്നത് ഏത് മൂലകങ്ങൾ കൂടുമ്പോളാണ്?

i) ഫോസ്‌ഫറസ്

ii) നൈട്രജൻ

iii) കാൽസ്യം, യുറേനിയം

iv) സൾഫർ

തന്നിരിക്കുന്ന കോഡുകളിൽ നിന്നും ശരിയുത്തരം തെരഞ്ഞെടുക്കുക.

Below which of the following pH is rain regarded as ‘acid rain’?

What are two acids formed when gases react with the tiny droplets of water in clouds?

താഴെ പറയുന്നവയിൽ ഏതാണ് ഗുരുതരമായ ജലമലിനീകരണത്തിന് കാരണമാകുന്ന കീടനാശിനി?

The first step to practice waste management is segregation. Select the INCORRECT option with regard to segregation of waste into different categories?

ഒരു പ്രത്യേക രോഗം മൂലം അകാലത്തിൽ മരണമടയുന്ന ആളുകളുടെ എണ്ണം അളക്കുന്ന സൂചിക

Which of the following is a naturally occurring source of air pollution?

In today's scenario, which change seen in human attitude has helped in decreasing the production of non-biodegradable waste to some extent?

Some effects of large production of biodegradable waste are mentioned below. Choose the INCORRECT statement?

Three of the following statements pertaining to non-biodegradable plastics indicate their implications on animals, plants and our surrounding. Choose the odd one out?

The first protocol to ban the emissions of Chloro Fluoro Carbons in the atmosphere was made in ?

The Paris agreement aims to reduce

Salinization occurs when the irrigation water accumulated in the soil evaporates, leaving behind salts and minerals. What are the effects of salinization on the irrigated land? (UPSC Civil Services Preliminary Examination- 2011)

Match the regions and resource challenges. Which of the following is correct ?

A) Punjab → Waterlogging

B) Gujarat → Soil salinity

C) Odisha → Deforestation

D) Rajasthan → Overgrazing

Initially which energy was approved as a non-polluting way for generating electricity?

Which of the following can be created using crop waste?

What is done in integrated organic farming?

Which of the following is a cyclic and zero waste procedure?

What does the fertilizers and farm animal waste cause?

What can be construed to reduce water erosion?

What is the farming called in which there is less use of chemicals and lesser production of waste?

Which one of the following agro-chemical waste is sprayed on plants to increase their growth?

Which one of the following agro-chemical waste is added in the soil to increase the growth of plants?

Which kind of pollution is caused mainly due to agrochemical waste?

Which of the following is a method of solid waste disposal?

What can be made using bio-degradable waste?

Which one of the following is a component of hospital waste?

What does mining waste consist of?

Which of the following waste contributes heavily to environmental pollution?

Which of the following waste can be put into deep pits in the ground and be left for the natural breakdown?

In which three types can be the waste categorized?

What of the following was adopted as the substitute for open-burning dumping grounds?

What are wastes from homes, hospitals, offices, schools, stores, etc., that are collected and disposed of by the municipality called?

What is every material that goes to trash known as?

What happens to the concentration of DDT in each trophic level?

Which of the following is a primary treatment for water pollution?

What phenomenon occurs due to the accumulation of certain pollutants that increase in concentration along the food chain?

What is the reason for the reduction in dissolved oxygen?

What is the increased productivity of ponds and lakes due to excess nutrients called?

What happens when phosphorus, nitrates, and detergents in water lead to an acceleration in the growth of algae?

Which of the following is the test to the determine amount of oxygen needed to oxidize all pollution materials?

What do BOD and COD stand for?

Which of the following is the effect of high BOD?

What happens when the maximum amount of oxygen in the upstream of sewage discharge is utilized by microbes?

Who utilizes the maximum amount of oxygen in the upstream of sewage discharge?

How is the amount of biodegradable organic matter in sewage water estimated?

Which sewage contains biodegradable waste such as organic matter?

Which of the following are the colloidal materials present in domestic sewage?

Which materials are easily removed from the polluted water?

When the government of India did pass the Water (Prevention and Control of Pollution) Act?