लोहागढ़ के दुर्ग का निर्माता महाराजा सूरजमल ने इसका निर्माण कब कराया ? - When did Maharaja Surajmal, the builder of the fort of Lohagarh, get it built? - Lohagadh Ke Durg Ka Nirmata Maharaja Surajmal Ne Iska Nirmann Kab Karaya ? Rajasthan GK in hindi, दुर्ग और किले 1738 Me question answers in hindi pdf 1733 Me questions in hindi, Know About 1723 Me Rajasthan GK online test Rajasthan GK notes in hindi quiz book 1756 Me