pH is a measure of the acidity or alkalinity of a solution, with 7 being neutral.
- True
- False
Answer: True
pH scale ranges from 0 (highly acidic) to 14 (highly alkaline); most natural waters have pH between 6.5 and 8.5, suitable for aquatic life.
GK Questions
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Which of the following is a primary component of photochemical smog?
- Sulphur dioxide
- Ground-level ozone
- Carbon monoxide
- Particulate matter only
Answer: Ground-level ozone
Photochemical smog forms when sunlight triggers reactions between NOx and VOCs, producing ozone, PAN, and other secondary pollutants harmful to health.
Which of the following is a benefit of promoting non-motorized transport (walking and cycling) in cities?
- Increased air pollution
- Improved public health, reduced emissions, and enhanced livability
- Higher traffic congestion
- Greater dependence on fossil fuels
Answer: Improved public health, reduced emissions, and enhanced livability
Active transport encourages physical activity, lowers greenhouse gases, reduces noise, and creates people-friendly urban spaces.
Preserving urban wetlands helps in flood control, groundwater recharge, and biodiversity conservation.
- True
- False
Answer: True
Urban wetlands act as natural sponges, absorbing excess rainwater, filtering pollutants, and providing habitat for diverse species.
Which of the following is a strategy for sustainable urban waste management?
- Open dumping of waste
- Source segregation, recycling, composting, and scientific landfilling
- Burning waste in open areas
- Exporting all waste to other regions
Answer: Source segregation, recycling, composting, and scientific landfilling
Integrated waste management prioritizes waste reduction, resource recovery, and safe disposal to minimize environmental and health impacts.
The 'Atal Mission for Rejuvenation and Urban Transformation' (AMRUT) focuses on developing _____ infrastructure in cities.
- Space exploration
- Water supply, sewerage, urban transport, and green spaces
- Mining operations
- Defense facilities
Answer: Water supply, sewerage, urban transport, and green spaces
AMRUT aims to ensure basic urban infrastructure services for improved quality of life, especially for the poor and disadvantaged.
Which of the following is a common source of noise pollution in urban areas?
- Bird songs
- Traffic, construction, and industrial activities
- Rainfall
- Wind through trees
Answer: Traffic, construction, and industrial activities
Urban noise pollution from vehicles, machinery, and events can cause health issues like stress, sleep disturbance, and hearing impairment.
Green roofs and vertical gardens in urban areas can help mitigate heat island effect and improve air quality.
- True
- False
Answer: True
Vegetated building surfaces provide insulation, absorb CO2, filter pollutants, reduce stormwater runoff, and enhance urban biodiversity.
Which of the following is a key principle of 'Transit-Oriented Development' (TOD)?
- Promoting car-centric infrastructure
- Creating compact, walkable, mixed-use communities centered around public transport nodes
- Separating residential and commercial zones strictly
- Ignoring pedestrian and cyclist safety
Answer: Creating compact, walkable, mixed-use communities centered around public transport nodes
TOD reduces vehicle dependence, lowers emissions, and enhances accessibility by integrating land use and transport planning around transit stations.
The 'Smart Cities Mission' in India aims to develop cities that provide core infrastructure, a clean and sustainable environment, and application of _____.
- Traditional methods only
- Smart solutions and digital technologies
- Manual processes exclusively
- Paper-based administration
Answer: Smart solutions and digital technologies
Smart Cities leverage ICT, IoT, and data analytics for efficient service delivery, resource management, and citizen engagement in urban governance.
Urban heat island effect refers to higher temperatures in cities compared to surrounding rural areas due to human activities and built surfaces.
- True
- False
Answer: True
Concrete, asphalt, and reduced vegetation absorb and re-emit heat, while waste heat from vehicles and buildings elevates urban temperatures.
Which of the following is a characteristic of a 'Sustainable City'?
- High dependence on private vehicles
- Integrated public transport, green spaces, and waste management systems
- Unplanned urban sprawl
- Excessive consumption of non-renewable resources
Answer: Integrated public transport, green spaces, and waste management systems
Sustainable cities prioritize compact design, multimodal transport, resource efficiency, and livability to reduce ecological footprint and enhance quality of life.
Which of the following is a key strategy for effective environmental communication?
- Using technical jargon exclusively
- Tailoring messages to audience values, culture, and context
- Ignoring feedback and dialogue
- Focusing only on negative consequences
Answer: Tailoring messages to audience values, culture, and context
Audience-centered communication that resonates with local beliefs and priorities is more likely to inspire understanding, attitude change, and action.
Earth Hour, observed globally by switching off lights for one hour, aims to raise awareness about climate change.
- True
- False
Answer: True
Initiated by WWF, Earth Hour symbolizes collective commitment to environmental action and sparks conversations about sustainability beyond the event.
Which of the following is a benefit of environmental interpretation in protected areas?
- Restricting all visitor access
- Enhancing visitor understanding, appreciation, and support for conservation
- Promoting commercial exploitation of resources
- Ignoring local cultural contexts
Answer: Enhancing visitor understanding, appreciation, and support for conservation
Interpretation through signage, guides, and exhibits connects visitors emotionally and intellectually to nature, fostering stewardship and responsible behavior.
The 'Swachh Vidyalaya' initiative focuses on promoting _____ in schools across India.
- Academic excellence only
- Sanitation, hygiene, and environmental cleanliness
- Sports facilities only
- Digital infrastructure only
Answer: Sanitation, hygiene, and environmental cleanliness
Swachh Vidyalaya ensures functional toilets, handwashing stations, waste management, and cleanliness drives to create healthy learning environments.
Which of the following is a simple action individuals can take to reduce their environmental footprint?
- Using single-use plastics frequently
- Practicing the 3Rs: Reduce, Reuse, Recycle
- Leaving lights and appliances on when not in use
- Preferring private vehicles for short trips
Answer: Practicing the 3Rs: Reduce, Reuse, Recycle
Adopting the 3Rs minimizes waste generation, conserves resources, and reduces pollution, contributing to sustainable consumption patterns.
Mass media campaigns can effectively raise public awareness and influence pro-environmental behaviors.
- True
- False
Answer: True
Strategic communication through TV, radio, social media, and print can disseminate information, shape attitudes, and motivate collective action for sustainability.
Which of the following best describes 'Education for Sustainable Development' (ESD)?
- Teaching only about renewable energy
- Integrating principles, values, and practices of sustainable development into all aspects of education
- Focusing exclusively on economic growth
- Excluding social justice issues
Answer: Integrating principles, values, and practices of sustainable development into all aspects of education
ESD empowers learners to make informed decisions and take responsible actions for environmental integrity, economic viability, and a just society.
The 'Eco-Clubs' programme in Indian schools, known as 'National Green Corps' (NGC), is implemented by the _____.
- Ministry of Education
- Ministry of Environment, Forest and Climate Change
- Ministry of Sports
- Ministry of Finance
Answer: Ministry of Environment, Forest and Climate Change
NGC-Eco clubs engage students in environmental activities, fostering eco-consciousness and community participation in conservation efforts.