Mass of Earth is___________?
Mass of Earth is___________?
A. 5.972 × 1024 kg.
B. 6.972 × 1024 kg
C. 7.972 × 1024 kg
D. 8.972 × 1024 kg
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Sum of all ecosystems is classified as___________?
Sum of all ecosystems is classified as___________?
A. Aero sphere
B. Ionosphere
C. Biosphere
D. OzonosphereWhich is the Coldest Planet ?
Which is the Coldest Planet ?A. Earth
B. Venus
C. Mercury
D. NeptuneNeptune is the coldest planet in the universe and sees temperatures of below -210 degrees Celsius.
Sagittarius-A, the Blackhole at the centre of the Milky Way Galaxy is at a distance of_________?
Sagittarius-A, the Blackhole at the centre of the Milky Way Galaxy is at a distance of_________?A. 25500 Lightyears
B. 24500 Lightyears
C. 23640 Lightyears
D. 25640 LightyearsEarth is divided into following three layers?
Earth is divided into following three layers?a. Crust, Mountains, Oceans
b. Crust, Mantle, Trenches
c. Trenches, Mountains, Core
d. Crust, Mantel, CoreEcho is a ___________ of sound?
Echo is a ___________ of sound?A. Reflection
B. Refraction
C. Interference
D. NoneMetal are highly ___________ ?
Metal are highly ___________ ?A. Electropositive
B. Electronegativity
C. Both of these
D. Neutral