manganese dioxide

12.06.18 (CGPCS) Chhattisgarh Current Affairs

rawan239
June 12, 2018
Categories: Environment, June 2018
Tags: acid, AD, Andhra Pradesh, applications, Carbon, cent, Central Government, cgpcs, Chemical Reaction, Chemical reactions, chhattis, chhattisga, Chhattisgarh, chhattisgarh current affairs, Chief Minister, Chief Minister Raman Singh, country, Current Affairs, demand, development, electrolyte, environment, gk, government, Government of India, heat, Himachal Pradesh, increase, India, launch, launched, manganese, manganese dioxide, material, materials, metal, Minister Raman Singh, Ministry of Railways, Mobile Application, Nagpur, national, performed, Piyush Goyal, Plain, plan, Raman Singh, report, Rs, RU, scheme, states, STs, temperature, The Chief Minister, The Environment, The government, the state, West Bengal, zinc

CHHATTISGARH C’garh only state to distribute rs 700 cr bonus to tendupatta collectors’ Chief Minister Raman Singh inaugurated and performed bhumi-pujan of 21 development works worth nearly Rs 100 crore in the public meeting held at playground of Government Higher Secondary School Hringirishi in the district. This includes extension work of 22-km long Nagri distributary of Sondhur canal till Dugli and renewal work of 61-km long road from Dhamtari to Nagri worth Rs 60.53 crore. The Chief Minister said that he had sanctioned canal related demand of people during Lok Suraaj campaign, and now he is ... Read more

Preparation of Oxygen

rawan239
January 16, 2018
Categories: Part III Applied Science
Tags: acid, AD, bond dissociation energy, Carbon, carbon dioxide, chemical properties, Chemical properties of oxygen, excess oxygen, gas jar, generation, heat, hydrogen gas, manganese, manganese dioxide, metal, metals, NITI, Nitric acid, nitrogen dioxide, oxygen gas, Physical Properties, Physical properties of oxygen, plan, Preparation of Oxygen, Rs, RU, temperature, the reaction, water trough

Preparation of Oxygen Oxygen is prepared in lab generally in two ways either by the application of heat or no application of heat. Using heat: Oxygen in lab is prepared by heating the mixture of powdered potassium chlorate and manganese dioxide in the ratio 4:1 in a hard glass test tube. The oxygen gas is observed in a gas jar through the downward displacement of water. The reaction involved is given below: 2KClO3−→−−−−−MnO2200−300∘C2KCl+3O2↑ Without heat: The dry sodium peroxide is taken in a conical flask and the apparatus is fitted as shown in figure. The two necks of woulfe’s bottle ... Read more