Chemistry : Important Questions For CBSE Class XII ( Haloalkanes and Haloarenes) (Q.1) Choose the incorrect statement about the benzyl chloride: ( 1 mark ) (a) It is less reactive than alkyl halides. (b) It can be oxidized to benzaldehyde by boiling with copper nitrate solution. (c) It is a lachrymatory liquid and answers beilstein’s test. (d) It gives a white precipitate with alcoholic silver nitrate (Q.2) Dry ether The reaction RX + 2Na + RX _______________? R-R + 2NaXis called. ( 1 mark
Premium Chlorine Carboxylic acid Alcohol
Unsaturated Hydrocarbons Unsaturated hydrocarbons Have fewer hydrogen atoms attached to the carbon chain than alkanes. Are alkenes with double bonds. Are alkynes with triple bonds. 1 Structure of Alkenes Alkenes (and alkynes) are unsaturated hydrocarbons Alkenes have one or more double bonds The two bonds in a double bond are different: - one bond is a sigma () bond; these are cylindrical in shape and are very strong - the other is a pi (π) bond; these involve sideways overlap of
Free Benzene Hydrocarbon Alkene
Subject Content Most of the objectives specified in this section relate to Knowledge with Understanding‚ although some indication has been given as to where the skills of Handling Information and Solving Problems may be developed. Teachers are reminded that‚ in the written papers‚ 40% of the marks are allocated to these higher ’thinking’ skills. In almost every section‚ students should therefore be given practice at dealing with unfamiliar situations so that these higher thinking skills can be developed
Premium Oxygen Ionic bond Sodium chloride
UNIVERSITY OF THE GAMBIA LECTURE NOTES COURSE: PRINCIPLES OF CHEMISTRY II (ORGANIC CHEMISTRY) CODE: CHM 161 2ND SEMESTER SESSION: 2012/2013 LECTURER: ANTHONY F. ADJIVON UNIT 1 INTRODUCTION Organic chemistry started as the chemistry of life‚ when that was thought to be different from the chemistry in the laboratory. Then it became the chemistry of carbon compounds‚ especially those found in coal. Now it is both. It is the chemistry of the compounds of carbon along with other elements
Premium Carbon Atom Petroleum
Dana Erika Domingo III – St. Anne STERILIZATION OF WATER USING BLEACHING POWDER A CHEMISTRY INVESTIGATORY PROjECT ANSHUL KUMAR PANDEY XII B [THIS PROJECT LOOKS AT THE TECHNIQUE CALLED STERILIZATION OF WATER USING BLEACHING POWDER WHICH IS USED TO PURIFY WATER AND MAKES IT FIT FOR DRINKING.] INDEX I. Introduction -Need of Water -Purification of Water -Need for a stable purification technique II. Theory -History of Water purification -Bleaching powder
Premium Chlorine Water purification Drinking water
Water Treatment Plant Process- Chlorination or Ultraviolet Radiation By Shreya Shah Surface waters necessitate water treatment before consumption to guarantee no health risk is present to the user. Poor quality water which consists of dissolved and suspended particles‚ can impact and cause health risks to consumers. The most important contamination is the microbiological contamination as it leads to infectious diseases (Water Treatment‚ 1994). Chemicals such as nitrates and cyanide when contaminate
Premium Chlorine Water purification
of a group of straight chained alkanes to 2 branched alkanes‚ a ketone‚ an alcohol and an alkene. I plotted a graph of boiling points of straight chain alkanes against its molar mass. Here‚ it was noticed that as the molar mass increased‚ the boiling point increased as well. However‚ when I plotted the graph of the 2 branched alkanes‚ the ketone‚ alcohol and alkene‚ I noticed that they didn’t follow the same trend as the straight chain alkanes. The branched alkanes had a lower boiling point compare
Premium Temperature Boiling point Gas
capable of being converted to metal salts‚ alkyl halides‚ esters‚ aldehydes‚ ketones‚ and carboxylic acids. In this experiment the conversion from alcohol to alkyl halides was investigated. Alkyl halides are a group of chemical compounds derived from alkanes containing one or more halogens. They are used as flame retardants‚ refrigerants‚ propellants‚ solvents‚ and pharmaceuticals. As a group‚ students convert three alcohols to alkyl halides under acidic conditions and record the 13C NMR spectrum in each
Premium Alcohol Nucleophile Carbon
Carbon and Hydrogen atoms only. They are divided into three main categories base on the type of orbital hybridization they have. The three main groups of Hydrocarbons are Alkanes‚ Alkenes‚ and Alkynes (1). Alkanes are sp3-hybridized hydrocarbons characterized by single bonds between carbon atoms included in their chains. Alkanes are also called saturated hydrocarbons because they contain the highest possible H atoms that they can since their single bonds give the Carbon atoms the opportunity to bond
Premium Hydrocarbon Alkene Functional group
variety of methods to examine the physical and chemical properties of hydrocarbons. The first experiment we tested a variety of solvents to see if they dissolved our alkane (Decalin). One would expect that non-polar solvents will dissolve alkanes because they are non polar as well 1. If the solvent did not dissolve in the alkane we heated the solution with a heat gun‚ because higher temperature increases solubility because energy in the form of heat can break bonds and allow for the molecules to
Premium Solvent Solubility