UGC NET Paper 1 — Environmental Science

Which of the following are essential requirements for the formation of photochemical SMOG? A. Carbon monooxide (CO) B. Nitrogen dioxide (NO₂) C. Carbon dioxide (CO₂) D. Volatile Or...

Which of the following are essential requirements for the formation of photochemical SMOG? A. Carbon monooxide (CO) B. Nitrogen dioxide (NO2) C. Carbon dioxide (CO2) D. Volatile Or...

Cloudless night with low wind speed indicates:

Which one of the following is considered to be the finest particulate matter?

Non-point sources of water pollution are: A. from specific location B. diffuse C. episodic D. identifiable E. difficult to monitor Choose the correct answer from the options given...

Given below are two statements: Statement I: Rivers and lakes that have low biological productivity are said to be eutrophic. Statement II: Rivers and lakes that are rich in organi...

Given below are two statements: Statement I: The total solids (dissolved and suspended) in a waste water sample are the materials left after water has evaporated from the sample. S...

Given below are two statements: Statement I: Volatile Organic Compounds (VOCs) are emitted from vehicles. Statement II: Volatile Organic Compounds are emitted from some trees In th...

Atmospheric haze is mainly caused by?

When a reservoir becomes deficient in nutrients, what is it called?

Which of the following pollutants is responsible for blue baby syndrome?

Match List -I with List -II: List -I (Water Pollutant) A. Inorganic chemicals B. Organic chemicals C. Radioactive materials D. Pathogens List -II (Example) I. Iodine II. Detergents...

Given below are two statements: Statement I: Turbulent and rapidly flowing waters are generally depleted in oxygen. Statement II: Adding organic materials, such as sewage or paper...

When a water body is deficient in nutrients, it is known as

What is the correct sequence of Biomagnification due to contaminated water body? A. Humans B. Zooplanktons C. Bacteria D. Fish Choose the correct answer from the options given belo...

Given below are two statements: Statement (I): Exposure to mercury can be either through food chain or in the work place. Statement (II): Poisoning by inorganic mercury (particular...

Which of the following is essential for the formation of photochemical smog?

Given below are two statements: Statement I: Nano scale metallic and bimetallic particles can efficiently remove common water pollutants such as Poly Chloro Benzenes (PCB), Organo...

Lead pollution, impacts which of the following part of human body most?

Aeration technique of water treatment is used for the removal of 1. Persistant Organic Pollutants (POPs) 2. Volatile Organic Compounds (VOCs) 3. Hardness 4. Metals

Full form of PAN, a type of air pollutant, is

Match List - I with List - II: List - I (Pollution Source) A. Sewage B. Agricultural fertilizers C. Soil erosion D. Power plants List - II (Category) I. Thermal pollution II. Sedim...

Given below are two statements: Statement I: Dioxins and other chlorinated hydrocarbons have been shown to accumulate to dangerous levels in fish and fish eating birds. Statement I...

Given below are two statements: Statement (I): When a hazardous waste has either high or low pH value, it must be treated for neutralization before discharge. Statement (II): Sulfu...

यदि कोई जल निकाय स्वास्थ्यप्रद है और इसमें कोई महत्वपूर्ण जैविक क्रिया नहीं हो पाती है, तो इस स्थिति को क्या कहा जाता है?

Match List I with List II List I Pollution Source A. Sewage B. Agricultural Fertilizers C. Land Erosion D. Power Plants List II Category I. Thermal Pollution II. Sediments III. Oxy...

If a water body is healthy and supports no significant biological activity, then its condition is called as

Which of the following are primary aerosols in atmosphere? A. Sea salt B. Black carbon C. Sulphate D. Nitrate E. Mineral particles Choose the most appropriate answer from the optio...

Match List I with List II. List I (Category of water) List II (pH value) A. Normal water I. 7 C. Acid rain III. 5-6 D. Ocean water IV. 7 Choose the correct answer from the options...

Sick Building Syndrome (SBS) is caused due to :

Adding organic materials, such as sewage or paper pulp, to water stimulates consumption of which chemical by decomposers.

To qualify as hazardous waste, a waste must have the following characteristics: A. Ignitability B. Corrosivity C. Reactivity D. Toxicity E. Radioactivity Choose the correct answer...

Sick Building Syndrome (SBS) is caused by?

What is the correct increasing order of prescribed limits for following pollutants on 24 hours basis in residential areas by CPCB? A. Suspended Particulate Matter (SPM) B. Respirab...

Match List-I with List-II List I Water Category A. Normal Water B. Rain water C. Acid Rain Water D. Ocean Water List II pH Value I. 7 III. 5-6 IV. 7 Choose the correct answer from...

Match List I with List II List I Water Pollutant Type A. Pathogen B. Inorganic chemical C. Organic chemical D. Radioactive material List II Example I. Salt II. Iodine III. Fungi IV...

Which one of the following is a secondary aerosol?

Given below are two statements: Statement (I): Acid rain occurs within, and downwind of areas of major industrial emissions of sulfurdioxide and oxides of nitrogen. Statement (II):...

Identify the health affects related to Noise pollution A. Speech interference B. Hearing loss C. Hypertension D. Respiratory disease E. Insomnia Choose the correct answer from the...

Given below are two statements, one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): Acidity in water with pH level above 5 has detrimental effe...

नीचे दो कथन दिए गए हैं: कथन।: अम्ल वर्षा सल्फर डाईऑक्साइड और नाइट्रोजन के ऑक्साइड्स उत्सर्जित करने वाले प्रमुख औद्योगिकी क्षेत्रों के भीतर और हवा के बहाव के साथ होती है। कथन ।।: औद...

Which of the following statements about hard water are correct? A. Hardness of water can be found in both surface and groundwater. B. Hardness increases the cleansing capacity of w...

Arrange the following in increasing order of DDT concentration among them as a result of bioaccumulation/accumulation: (A) Fish (B) Water body (C) Fish eating birds (D) Zooplankton...

Waste stabilization ponds are: A. Mainly oxidation ponds B. Used to remove pathogen and organic contents C. Natural treatment systems D. Extremely quick E. Most efficient in extrem...

Low level of Dissolved Oxygen (DO) in water: A. is bad for human consumption. B. must have been caused by the presence of oxygen demanding wastes. C. is a threat to fish and aquati...

Which of the following Volatile Organic Compounds (VOCs) are emitted from anthropogenic sources only? A. Isoprene B. Benzene C. Terpene D. Methane E. Toluene Choose the correct ans...

Lower level of Dissolved Oxygen (DO) in water A. is bad for human consumption. B. may have been caused due to presence of oxygen demanding wastes. C. threatens the fish and aquatic...

Full form of PAN, a type of air pollutant, is -

Match List I with List II LIST I (Pollutant) A. Lead B. Mercury C. Benzene D. Cadmium LIST II (Source) I. Coal combustion II. Batteries III. Paint IV. Petrol Choose the correct ans...

Which of the following is the full form of PAN (PAN), a type of air pollutant?