Teaching BPSC बिहार मध्य विद्यालय (6 to 8) शिक्षक भर्ती 4.0 Mock Test General Knowledge Geography (World Geography) Climatology
Ozone layer above the surface of earth provides a shield against?
1
X-rays
2
Ultra violet rays
3
Gamma rays
4
More than one of the above
5
None of the above