BPSC Prelims and Mains Notes, BPSC Test Series
Laboratory method of preparation acetic acid Ethanoic Acid (Acetic acid – CH COOH) Ethanoic acid is the second member of the homologous series of carboxylic acids. In other words, vinegar contains about 5 to 8% acetic acid. We will now describe two methods for the manufacture of ethanoic acid. In the first method, ethanoic acid … Read more Laboratory method of preparation acetic acid
Laboratory method of preparing alcohol Hydrolysis of Alkyl Halides This is a nucleophilic substitution reaction. R-X + KOHaq → R-OH The method is not satisfactory as olefins are also formed as by-products. However better yields is obtained by using moist Ag2O or aqueous K2CO3. Tertiary butyl halides mainly gives alkene due to dehydrohalogenation. Hydration of Alkenes This … Read more laboratory method of preparing alcohol
Corrosion is defined as an attack on a material as a result of chemical, frequently electrochemical reaction, with the surrounding medium. According to this definition, the term corrosion can be applied to all materials, including non-metals. But in practice, the word corrosion is mainly used in conjunction with metallic materials. Why do metals corrode? Apart … Read more Corossion of metals
Alloy You might see the word alloy described as a “mixture of metals”, but that’s a little bit misleading because some alloys contain only one metal and it’s mixed in with other substances that are nonmetals (cast iron, for example, is an alloy made of just one metal, iron, mixed with one nonmetal, carbon). The … Read more Alloy
An introduction to economy of Bihar BIHAR ECONOMY: AN OVERVIEW The growth momentum of the Bihar’s economy, experienced in the last decade, was continued in the recent years also. Last year the Central Statistical Organisation has released a new series of GSDP, with 2011-12 as the base year for estimation of both national and state … Read more An introduction to economy of Bihar
BIHAR Bihar needs some serious thinking on secondary education: ASER For the first time, annual status of education report (ASER) – 2017 by Pratham, to be released in New Delhi, has gone beyond the basics to focus on students in the 14-18 age group, i.e. the secondary and higher secondary stage – the Achilles’ … Read more 14-15 .01.18 Bihar (BPSC) Daily Current Affairs
BIHAR CM Nitish Kumar launches schemes worth Rs 396 crore in 2 districts Chief minister Nitish Kumar inaugurated and laid stones of schemes worth Rs 168 crores at Nandan panchayat in Buxar district and another 63 schemes worth Rs 228 crore at Ahinaura village in Kamur. The CM spoke at length about his mission against alcoholism and dowry and … Read more 13.01.18 Bihar (BPSC) Daily Current Affairs
BIHAR Sushil Kumar Modi seeks suggestions from people on annual state Budget Deputy CM Sushil Kumar Modi, who also holds the finance portfolio, = invited people of the state to give their suggestions for consideration in the state’s Budget till January 15. People can post their suggestions on the website of the state finance department or … Read more 12.01.18 Bihar (BPSC) Daily Current Affairs
BIHAR Bihar sees substantial rise in new voters 74 lakh new electors in the age group of 18-19 years, as per the updated data released by the election commission recently. There are a total of 7.17 lakh young voters in the same age bracket. Overall voters in the state now stands at 6.98 … Read more 11.01.18 Bihar (BPSC) Daily Current Affairs
Q1. About Climate Profile of the Bihar State The state has a tropical monsoon climate with three distinct seasons-winters, summer and rainy. The winter season exists from December to February, January being the coldest month when temperature falls below 0°C. The summer season covers the period from April to June, May is the hottest month … Read more Bihar Geography-Sample Questions- BPSC Test Series