Questions

Which of the following devices converts Chemical energy into Electrical energy?

What is the duration of the world’s shortest X–ray laser has been successfully created by the scientists?

Which of the following elements was the last element in Newland's Law of Octaves?

Which of the following is used for disinfecting drinking water?

Which of the following increase the risk of developing osteoporosis?

The State Financial Corporations have given assistance mainly to develop___________.

The closest example of a centrally planned economy is the __________ for the major part of the 20th Century.

In the following question, out of the four alternatives, select the alternative which best expresses the meaning of the idiom/phrase.
Not to mince matters