Free download as PDF General Science GK Questions and Answers for UPSC(Union Public Service Commission) Exams or solved MCQs with answers. These quiz objective questions are helpful for competitive exams SSC, UPSC, IAS, IPS, CDS, NDA, Railways or RRB etc.
76
Twinkling of stars is due to :
A
Due to diffraction
B
Reflection of light from the moon
C
Difference of temperature between various layers of air of varying density