QUES: Lithotrophic bacteria can use inorganic compounds as a source of energy. Common inorganic electron donors are hydrogen, carbon monoxide, ammonia (leading to nitrification), ferrous iron and other reduced metal ions, and several reduced sulfur compounds. In unusual circumstances, the gas methane can be used by methanotrophic bacteria as both a source of electrons and a substrate for carbon anabolism. In both aerobic phototrophy and chemolithotrophy, oxygen is used as a terminal electron acceptor, whereas under anaerobic conditions inorganic compounds are used instead. Most lithotrophic organisms are autotrophic, whereas organotrophic organisms are heterotrophic.
What are hydrogen and carbon monoxide for Lithotrophic bacteria?

ANS: Common inorganic electron donors

QUES: In 1958, the Soviet Union developed ransformator (Russian: , meaning Transformer), the first high-resolution (definition) television system capable of producing an image composed of 1,125 lines of resolution aimed at providing teleconferencing for military command. It was a research project and the system was never deployed by either the military or consumer broadcasting.
Who developed Transformator in 1958?

ANS: the Soviet Union

QUES: The SI unit of illuminance and luminous emittance, being the luminous power per area, is measured in Lux. It is used in photometry as a measure of the intensity, as perceived by the human eye, of light that hits or passes through a surface. It is analogous to the radiometric unit watts per square metre, but with the power at each wavelength weighted according to the luminosity function, a standardized model of human visual brightness perception. In English, "lux" is used in both singular and plural.
What is a standardized model of human visual brightness?

ANS: luminosity function

QUES: Quoted at constant 2002 prices, GDP fell from 12 million in 1999-2000 to 11 million in 2005-06. Imports are mainly from the UK and South Africa and amounted to 6.4 million in 2004-05 (quoted on an FOB basis). Exports are much smaller, amounting to 0.2 million in 2004-05. Exports are mainly fish and coffee; Philatelic sales were 0.06 million in 2004-05. The limited number of visiting tourists spent about 0.4 million in 2004-05, representing a contribution to GDP of 3%.
Tourists spent how much in 2004-05?

ANS:
0.4 million