पेंच की चूड़ी (screw thread) की उस ऊपरी सतह को क्या नाम दिया जाता है जो चूड़ी के दो आसन्न पक्षों (sides) को जोड़ती 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?