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Currently, petrol is retailing at Rs - a litre in Delhi, and diesel is priced at Rs 87.62. In Mumbai, Chennai and Kolkata petrol costs Rs -, Rs - and Rs - respectively. On the other hand, diesel is ...

Jan. 9, 2026 Scientists in South Korea have discovered a way to make all-solid-state batteries safer and more powerful using inexpensive materials. Instead of adding costly metals, they redesigned the ...