(b) Only two statements are correct (1st and 3rd)
The Integrated Guided Missile Development Program (IGMDP) was indeed initiated in 1983 and successfully completed in 2008.
The Agni series of missiles are primarily surface-to-surface ballistic missiles, not surface-to-air missiles. (Statement 2nd is incorrect)
The K-4 missile is an intermediate-range ballistic missile developed for the Indian Navy’s submarine-launched ballistic missile (SLBM) capability.
The Nirbhay missile is a subsonic cruise missile, not supersonic, with a range of over 1,000 kilometers. (Statement 4th is incorrect)

(d) All pairs are correctly matched

(a) 1 and 3
Polyethylene terephthalate (PET) is the predominant polyester used for fibre production. They are often used in durable-press blends with other fibres such as rayon, wool, and cotton, reinforcing the inherent properties of those fibres while contributing to the ability of the fabric to recover from wrinkling. (Statement 1 is correct)
Particularly for highly concentrated spirits in small PET bottles and high storage temperatures the water permeation is unfavourable. In fact, the leaching effects of plastic and plastic chemical substances (such as ethylene glycol) have the tendency to leach considerably into alcohol stored if the temperature goes up during storage. (Statement 2 is incorrect)
PET bottles can be recycled back into bottles, fibres, film, thermoformed packaging and strapping. (Statement 3 is correct)
The burning of plastics releases toxic gases like dioxins, furans, mercury and polychlorinated biphenyls (better known as BCPs) into the atmosphere, and poses a threat to vegetation, and human and animal health. (Statement 4 is incorrect)

(d) None of the statements are incorrect
Kaveri extends over states of Tamil Nadu, Karnataka, Kerala and Union Territory of Puducherry. It is bounded by the Western Ghats on the west, by the Eastern Ghats on the east and the south and by the ridges separating it from Krishna basin and Pennar basin on the north. (Statement 2 is correct)
It origins at an elevation of 1,341 m at Talakaveri on the Brahmagiri range near Cherangala village of Kodagu district of Karnataka. The river drains into the Bay of Bengal at Poompuhar in the Mayiladuthurai district of Tamil Nadu. (Statement 1is correct)
Major left bank tributaries: Harangi, the Hemavati, the Shimsha and the Arkavati.
Major right bank tributaries: Lakshmantirtha, the Kabbani, the Suvarnavati, the Bhavani, the Noyil and the Amaravati
The basin can be divided into three parts – the Western Ghats, the Plateau of Mysore and the Delta.
The delta area is the most fertile tract in the basin.
The principal soil types found in the basin are black soils, red soils, laterites, alluvial soils, forest soils and mixed soils. Red soils occupy large areas in the basin. Alluvial soils are found in the delta areas.
National Parks in this basin: Bandipur National Park, Nagarhole National Park and Bannerghatta National Park. (Statement 3 is correct)

(d) All four
The Katkari are a tribe from Maharashtra, India. They are also known as Kathodi. The Katkari are considered a Scheduled Tribe and a Particularly Vulnerable Tribal Group (PVTG).
The Tharu are an ethnic group of people who are indigenous to the Terai region of northern India and southern Nepal. They are known for their love of nature and practice Theravada Buddhism.
The Hattis are a close-knit community that got their name from their tradition of selling homegrown vegetables, crops, meat, and wool, etc. at small markets called ‘haat’ in towns.The Hatti homeland straddles the Himachal-Uttarakhand border in the basin of the Giri and Tons rivers, both tributaries of the Yamuna.
The Koya are an Indian tribal community that live in the states of Andhra Pradesh, Telangana, Chhattisgarh, and Odisha. They are one of the largest adivasi tribes in Telangana.