Explanation:

CSIR-National Chemical Laboratory (CSIR-NCL), Pune has launched a new technique called SWASTIIK to disinfect water by using natural oils. It was launched because, water-borne diseases have increased India’s disease burden.

=> Disinfection of water is essential to remove pathogenic microorganisms that causes water-borne diseases. But, chemical methods like chlorination to disinfect water, generate harmful or carcinogenic by-products.

=> Thus, SWASTIIK technology was developed which boils liquid as a result of pressure reduction or cavitation. This method uses natural oils with antimicrobial properties to disinfect water.