261) Who produced the first automobile
Henry Ford
262) Under which ministry is the National River Conservation Directorate
Ministry of Environment and Forests
263) When is World Malaria Day, recognized by the WHO observed
25-Apr
264) By which instrument the rate of growth of plant is measured
Auxanometer
265) Which Asian languages are UN official languages
Chinese & Arabic
266) Which when dissolved in HO gives hissing sound
Limestone
267) Dr. Rabindranath Tagore received the Nobel Prize for which work
Gitanjali
268) Which rivers joins Ganga at Allahabad
Yamuna
269) Which satellite is used in ship-to-shore and shore-to-shore and shore-to-ship communication
Marisat
270) Where were the war criminals of the II World War put to trial
Peitersburg
271) What is the time required by moonlight to reach the earth
1.3 sec
272) Helium gas is filled in the balloon instead of Hydrogen because its– Non-Combustible
273) Mortar is a mixture of water, sand
Slaked
274) Tip of matchstick contains
Red phosphorous
275) The process of conversion of sugar into Alcohol is known as– Fermentation
276) Vinegar is the chemical name of
Acetic acid
277) Chemical name of baking soda is– Sodium Bicarbonate
278) Sodium carbonate commonly known as– Washing soda
279) Chemically ‘Philosopher wool’ is a– Zinc oxide (zno)
280) The mercury and sodium streetlamps Light up become of– Atomic emission