Basic-Science-Objective Related Question Answers
126. What is the first compound which is fixed during photosynthesis?
Glucose
127. Which can be used for biological control of mosquitoes?
Gambusia
128. Which is the most unreactive gas?
Hydrogen
129. What is the wavelength of visible spectrum?
3900-7600 A
130. In which technology do Cryogenic engines find applications?
Rocket technology
131. What is the characteristic odour of garlic?
A sulphur compound
132. Which element that does not occur in nature but can be produced artificially?
Plutonium
133. Which vitamin is considered to be a hormone?
D
134. Which tissue take part in healing the wounds?
Epithelium tissue
135. Which is the vitamin that is most readily manufactured in our bodies?
Vitamin D
136. Which communicable disease is caused by bacteria?
Leprosy
137. Which planet looks reddish in the night sky?
Mars
138. ‘Gobar gas’ contains mainly which gas?
Methane
139. What denotes the smallest temperature?
1° on the Kelvin scale
140. The escape velocity from the surface of the earth does not depend on which body?
Mass of the body
141. When does Relative humidity decreases?
With increased temperature
142. Which type of glass is used for making glass reinforced plastic?
Quartz glass
143. Which worm reach into intestine of human by eating leaf?
Tape worm
144. What is the conversion of Fe++ to Fe+++?
Oxidation
145. Which is used as a coolant in nuclear reactors?
Liquid sodium
146. Which elements is obtained from sea weeds?
Iodine
147. Which energy of the electron at absolute zero is called?
Fermi energy
148. What is the principal reason for the formation of metamorphic rocks?
Extreme heat and pressure
149. How are Oxygen and ozone?
Allotropes
150. In 1610, Galileo Galilei discovered four moons of which planet?
Jupiter
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