निम्नलिखित धातुओं में से किसका कमरे के तापमान पर रैखिक प्रसार गुणांक (coefficient of linear expansion) का मान सबसे कम होता है?

The arrival of which commission in India triggered widespread protests, including mass hartals across the country in 1928?

Which of the following leaders was instrumental in initiating and leading India’s struggle for independence?