मुख्य वन उपज के रूप में वर्गीकृत कौन सा पदार्थ विशेष रूप से लकड़ी के अपूर्ण दहन (incomplete combustion) से प्राप्त 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?