121. Vitamin B2 is also called as__________?
A. Riboflavin
B. Thiamine
C. Ascorbic Acid
D. Niacin

122. Vitamin B3 is also known as__________?
A. Thiamine
B. Riboflavin
C. Niacin
D. Retinol

123. In whole Periodic Table which element Is Most Reducing Agent ?
A. Chlorine
B. lithium
C. Helium
D. Neon

124. Day and night are the results of__________?
A. Earth rotation around its axis
B. Earth revolution
C. Earth rotation accompanied with its revolution.
D. None of these

125. Almost identical eclipses occur after 18 years and 11 days. This cycle is known as__________?
A. Partial Eclipse cycle
B. Total Eclipse Cycle
C. Saros Cycle
D. None of the above

126. In which type of solar eclipse the Sun’s center is covered by the moon, leaving its edges uncovered?
A. Partial Solar Eclipse
B. Total Solar Eclipse
C. Annular Solar Eclipse
D. None of the above

127. Which of the following cutting conditions greatly affects the tool wear?
A. Cutting speed
B. Feed
C. Depth of cut
D. None of the above

128. Mercury, Venus, Earth and Mars are called___________?
A. Dwarf Planet
B. Gaseous Planets
C. Terrestrial Planets
D. Both A & B

129. Jupiter, Saturn, Uranus and Neptune are called_________?
A. Jovian planets
B. Terrestrial Planets
C. Both A & B
D. None of these

130. The Proportion of Hydrogen to Helium in the Sun is________?
A. 3:2
B. 3:1
C. 1:1
D. 3:4

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