वह प्रक्रिया जिसमें कोई ठोस पदार्थ बिना द्रव में बदले सीधे वाष्प या गैस अवस्था में परिवर्तित हो जाता है, कहलाती है:

Who among the following founded the 'Forward Bloc'?

Which of the following statements regarding the Harappan Civilization is NOT correct?

Which ruler is generally credited with unifying much of Northern India under a single empire for the first time?