(b) Only two
The Ram Temple in Ayodhya will be inaugurated on January 22. Chandrakant Sompura, and his son Ashish created the structure in the Nagara style of temple construction.
The Nagara style of temple architecture emerged some time in the fifth century CE, during the late Gupta period, in northern India. Hence, statement 4 is not correct.
Nagara temples are built on a raised plinth, with the garbha griha (sanctum sanctorum) — where the idol of the deity rests — the most sacred part of the temple. Hence, statement 1 is correct.
Towering over the garbha griha is the shikhara (literally ‘mountain peak’), the most distinguishable aspect of Nagara style temples. Hence, statement 2 is correct.
Typical Nagara style temple also comprises a circumambulatory passage around the garbha griha, and one or more mandapas (halls) on the same axis it. Hence, statement 3 is not correct.

(b) Arunachal Pradesh
Arunachal Pradesh’s borders are:
North: China’s Tibet Autonomous Region
West: Bhutan
East: Myanmar
South and Southeast: Nagaland and Myanmar
South and Southwest: Assam

(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)

(a) Liquid Sodium is employed as a coolant in nuclear reactors
Liquid sodium is used as a coolant in nuclear reactors. It absorbs energy from the reaction and transfers it to water in steam generators. The steam is then used to turn turbines to generate electricity.

(d) Goa
Mangoes, known in Goa as’mankurad’, are the most popular of the coastal state’s more than 80 unique varieties, and sell for an average of Rs 5,000 per dozen in local marketplaces.
The mangoes, also known as ’mankur mango’ or ’malcorado’, are priced premium due to an early ripening and harvesting season and a restricted supply, according to vendors and producers.
This variety of mangoes was originally called ‘malcorado’, meaning poor colour in Portuguese. The word later metamorphosed to mankurad over a period of time.
Goa ‘mankurad’ mango, or ‘mankurad’, got the geographical indication (GI) tag from the Geographical Indications Registry in Chennai.