1961. Chipko movement is a public agitation that occurred in

A. Mansbal area in Kashmir
B. Silent valley in Kerala
C. Sundarban area in Bengal
D. Tehri Garhwal area of Uttar Pradesh
✅ The correct answer is option D.
The Chipko movement or Chipko Andolan, was a forest conservation movement in India. It began in 1970s in Uttarakhand, then a part of Uttar Pradesh (at the foothills of Himalayas) and went on to become a rallying point for many future environmental movements all over the world.

1963. A food web is

A. Like a food chain
B. A set of interconnected food chains, illustrating the tropic relationships among species
C. The set of prey species that are consumed by animals in an ecosystem
D. The tropic (feeding) levels that can be observed in an ecosystem
✅ The correct answer is option B.
A food web (or food cycle) is the natural interconnection of food chains and a graphical representation (usually an image) of what-eats-what in an ecological community. Another name for food web is consumer-resource system.

1965. The rate at which temperature decreases with increasing altitude is known as the:

A. Temperature slope
B. Lapse rate
C. Sounding
D. Thermocline
✅ The correct answer is option B.
The actual rate at which the temperature drops with altitude is called the environmental lapse rate. In the troposphere, the average environmental lapse rate is a drop of about 6.5 °C for every 1 km (1,000 meters) in increased height.

1966. During the winter in the Northern Hemisphere, the “land of the midnight sun” would be found:

A. At high latitudes
B. At middle latitudes
C. Near the equator
D. In the desert southwest
✅ The correct answer is option A.
During the winter in the Northern Hemisphere, the “land of the midnight sun” would be found: in high latitudes. During the winter solstice in the Northern Hemisphere, the day is less than 12 hours long and is increasing with each passing day.

1968. The Primary Consumers are also called as

A. Herbivores
B. Carnivores
C. Enzymes
D. None of these
✅ The correct answer is option A.
Primary consumers are animals that eat primary producers; they are also called herbivores (plant-eaters). Secondary consumers eat primary consumers. They are carnivores (meat-eaters) and omnivores (animals that eat both animals and plants).

1970. Black lung disease is associated with

A. Farmers
B. Coal miners
C. Textile industry workers
D. Sweepers
✅ The correct answer is option B.
Coal workers’ pneumoconiosis (CWP), also known as black lung disease or black lung, is caused by long-term exposure to coal dust. It is common in coal miners and others who work with coal. It is similar to both silicosis from inhaling silica dust and asbestos dust.