What is irrigation? Describe two methods of irrigation which conserve water.

The artificial method of watering the plants for assisting in their growth is called irrigation. Main sources of irrigation are wells, tube-wells, ponds, lakes, rivers. Two methods which help us to conserve water are: (i) Sprinkler irrigation system: This irrigation system has an arrangement of vertical pipes with rotating nozzles on the top. It is … Read more

450+ Chemistry Questions PDF For SSC | Railway | State PCS | RRB | Previous Year Question Download Now

CHEMISTRY PREVIOUS YEAR QUESTIONS Q1. Beryllium Sulphate is less soluble in water due to ?(a)High inflammable energy(b) Low Energy of dissociation(c) Low inflammable energy(d) ionic band Q2. What is the name of that system which usesradioactivity to decide the period of materials of prehis tone period ?(a) Radium dating(b) Uranium dating(c) Carbon dating(d) Deuterium dating … Read more

50+ Chemical Formula and their Common Names List

Common used name, trade names Chemical Name Chemical Formula acetone acetone (CH3)2 CO acetylene acetylene C2H2 ammonia ammonia NH3 ammonium ammonium hydroxide NH4OH aniline aniline C6H5 NH2 bauxite hydrated aluminium oxides Al2O3 2H2O bleaching powder calcium hypochlorite CaCl (OCl) blue vitrol copper sulfate CuSO4 5H2O borax sodium tetraborate Na2B4O7 10H2O butter of zinc zinc chloride ZnCl2 3H2O cadmium sulfate cadmium sulfate … Read more

हाइड्रोकार्बन (Hydrocarbons) किसे कहते हैं?

हाइड्रोकार्बन (Hydrocarbons) हाइड्रोकार्बन पद का अर्थ केवल कार्बन तथा हाइड्रोजन के यौगिक है। हमारे दैनिक जीवन में हाइड्रोकार्बन का महत्त्वपूर्ण योगदान है। आप एल०पी०जी०, सी०एन०जी० आदि संक्षिप्त शब्दों से परिचित होंगे, जो ईंधन के रूप में उपयोग में लाए जाते हैं। एल०पी०जी० द्रवित पेट्रोलियम गैस का, जबकि सी०एन०जी० संपीडित प्राकृतिक गैस का संक्षिप्त रूप है। … Read more