Which one of the following is also called Stranger Gas?
		A. Neon
B. Argon
C. Xenon
D. Nitrous oxide
		A. Neon
B. Argon
C. Xenon
D. Nitrous oxide
		A. 81.1 °C
B. 37.0 °C 
C. 98.6 °C
D. 21.7 °C
This in-between phase of stellar nurseries and star formation in stellar evolution is when the gathered dust is still condensing to form a star.
		A. Alpha Stage
B. Stellar Genesis
C. Protostar
D. Star of Adam
A. Pascal
B. No unit
C. Mass/volume
D. None of these
		A. silver
B. gold
C. platinum
D. aluminium oxide
Which of the statements to about the Troposphere is not true?
		A. It contains 85-90% of the atmosphere’s mass
B. It contains nearly all the water and oxygen of the atmosphere
C. It is the zone which exhibits changes in condition of weather
D. It is about 350 km thick
Who was the first to measure the earth’s radius
A. Galileo
B. Copernicus
C. Ptolemy
D. Eratosthenes