46. Who was the famous astronomer who lived during the Gupta period and wrote the Aryabhatiya?
a) Aryabhatta
b) Varahamihira
c) Brahmagupta
d) Bhaskara II
47. Which of the following was not a key achievement of the Gupta period in the field of science and technology?
a) Invention of the zero
b) Advances in metallurgy
c) Development of the decimal system
d) Invention of the telescope
48. Who was the famous philosopher who lived during the Gupta period and wrote the Nyaya Sutras?
a) Nagarjuna
b) Vasubandhu
c) Asanga
d) Gautama
49. Which of the following was not a key social development during the Gupta period?
a) Rise of the caste system
b) Emergence of the joint family system
c) Development of Sanskrit literature
d) Emergence of the guru-shishya tradition
50. Who was the founder of the Gupta Empire?
a) Chandragupta I
b) Samudra Gupta
c) Chandra Gupta II
d) Skanda Gupta