175. The ultimate source of the biomass energy is
(a) The sun
(b) The life energy peculiar to biomass
(c) The microbial activity in the biomass
(d) The chemical energy stored in the biomass
176. If T.B. bacteria attack the bone of a patient and damage the bone marrow, what would be the main problem in tire patient’s bio-system?
(a) Metabolism of calcium
(b) Production of RBC
(c) Protein synthesis
(d) Control of muscles associated with the bone
177.The cooler part of the sun, emitting weak red light, is called
(a) Photosphere
(b) Ionosphere
(c) Chromosphere
(d) Corona
178. The small planet like objects floating between the Mars and the Jupiter are called
(a) Asteroids
(b) Comets
(c) Satellites
(d) Meteorites
179. It is easier to roll a stone up a sloping road than to lift it vertically upwards because
(a) Work done in rolling is more than that in lifting
(b) Work done in rolling is less than that in lifting
(c) The rate of doing work is less in rolling
(d) Of none of these reasons
180. Which can be used as a conductor of electricity as well as a lubricant?
(a) Graphite
(b) Diamond
(c) Silicon
(d) Germanium
181. Which one of the following is hermaphrodite ?
(a) Hookworm
(b) Earthworm
(c) Mosquito
(d) Bedbug
182. Kalazar is transmitted by the
(a) Sandfly
(b) Ticks
(c) Fresh water mollusks
(d) Housefly
183. Genetic engineering is a branch of
(a) Nuclear engineering
(b) Biology
(c) Electronics
(d) Mechanical engineering
184. Ventilators are provided close to the ceiling of the room because they
(a) Cool the room
(b) Take out the exhaled warm air that rises up
(c) Provide cross ventilation
(d) Provide light in the room
185. The process not concerned with the transfer of heat is
(a) Conduction
(b) Reflection
(c) Radiation
(d) Convection
186. An anemometer is used for measuring
(a) The velocity of wind
(b) The atmospheric pressure
(c) The humidity
(d) The maximum and minimum temperatures for a given period
187. A bat is
(a) A reptile
(b) A mammal
(c) An amphibian
(d) An avian
188. The reason for feeling hot and sticky in the rainy season is the
(a) Low absolute humidity in the atmosphere
(b) High relative humidity in the atmosphere
(c) Humidity in the atmosphere
(d) Low relative humidity in the atmosphere