The famous equation E=mc^2 is given by which scientist?
A. Newton
B. Einstein
C. Schrodinger
D. None of these
Which symbol is used for the element of Tin
A. Au
B. Sn
C. Fe
D. Hg
Submitted by Hasnain Ali
Gordian Knot means?
a. An easy knot
b. A knot gave by Guass
c. A very difficult task
d. A sailor’s rope
How many years Hazrat Umar (R.A) served as the Caliph of Islam?
A. 2 years
B. 4 years
C. 8 years
D. 10 years
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