S chand chemistry class 11

Class 11

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Lakhmir Singh Chemistry Class 10 Solutions

Solution : i Isomer of hexane: 2-methylpentane Question 21: Fill in the following blanks with suitable words : a The form of carbon which is known as black lead is……………………. Charge to mass ratio of an electron was determined by Thomson. Solution : i Vegetable oil like castor oil, cottonseed oil or soyabean oil ii Sodium hydroxide caustic soda iii Sodium chloride common salt Question 14: Would you be able to check whether water is hard by using a detergent? These orbits are arranged concentrically around thenucleus b. They are very beneficial for teachers and faculties too. Solution : a Graphite b Graphite c Hydrocarbons d Alkene e Alkynes f Unsaturated g Two h Low; covalent i Catenation j Alkenes k Ethene l Ethyne Question 22: a What is the atomic number of carbon. In vacuum all types of electromagnetic radiations travel with thesame velocity. Solution : a Diamond is a colourless transparent substance having extraordinary brilliance.

Chemistry Notes for Class 11 STRUCTURE OF ATOM Download in pdf

In a candle, there is no provision for the proper mixing of oxygen of air for burning wax vapours. Teachers and faculties also can prefer them fir their own guidance and also other aspects. Electromagnetic spectrum is a continuous spectrum. Solution : Methyl alcohol Question 22: What is the difference between two consecutive homologues : i in terms of molecular mass? H 2S0 4 at 170°C? Solution : a i C 4H 8 ii C 3H 8 iii C 3H 4 b 14 u c 1 carbon atom and 2 hydrogen atoms i. Write the name of another member of this homologous series. Solution : Ethyne acetylene burn with a sooty flame because ethyne is an unsaturated hydrocarbon and the percentage of carbon in these hydrocarbons is comparatively higher which does not get oxidised completely in oxygen of air.

Which is better for class 11, S. Chand's or H.C. Verma's Physics book?

These paths are called orbits orenergy levels. Example of Homologous series: All the alkanes have similar structures with single covalent bonds and show similar chemical properties, so they can be grouped together in the form of a homologous series. But this does not happen. Name two elements which exhibit the property of catenation. Name two oxidising agents which can oxidise ethanol to ethanoic acid.

Which is better for class 11, S. Chand's or H.C. Verma's Physics book?

Thomson 1869 Goldstein 1886 Chadwick 1932 Nature of charge Negative Positive Neutral Amount of charge 1. Question 48: a Name the reaction which is usually used in the conversion of vegetable oils to fats. Linear equations- learn to make a graph and solve for slope. I'm a Physics teacher, and a good one. The four surrounding carbon atoms are at the four vertices of a regular tetrahedron. These are used in cold drinks, ice-creams, sweets and perfumes.

S. Chand's Principles of Physics for Class 11: Amazon.in: V K Mehta, Rohit Mehta: Books

C 2H 4, C 3H 4, C 3H 6 Solution : C 3H 4 Question 66: Write the molecular and structural formula of a cyclic hydrocarbon whose molecule contains 8 atoms of carbon. Question 25: a What happens when propanoic acid is warmed with methanol in the presence of a few drops of concentrated sulphuric acid? Another four carbon atoms containing carbon compound reacts with sodium hydrogencarbonate to evolve a gas which turns lime water milky. Spectrum is of two types: a Continuous and line spectrum The spectrum which consists of all the wavelengths is called continuous spectrum. Solution : Question 62: The solid element A exhibits the property of catenation. Solution : Question 12: Name one liquid carbon compound which is being used as an additive in petrol in some countries. An allotrope C of this element is used in glass cutters. Solution : Question 40: a What is meant by a substitution reaction? Solution : i 14 u ii Two consecutive homologues differ by 1 carbon atom and 2 hydrogen atoms in their molecular formulae.

Which is better for class 11, S. Chand's or H.C. Verma's Physics book?

Solution : Question 43: a What happens when ethanoic acid reacts with sodium hydroxide? In allotrope A, the atoms of element E are joined to form spherical molecules. Inside water, these molecules have a unique orientation that keeps the hydrocarbon portion inside the water. If the blue litmus solution turns red, it shows that the organic compound is acidic in nature and hence it is a carboxylic acid. Will probably take around a week to study. This rigid structure of diamond makes it a very hard substance. We are not responsible for any type of mistake in data. In allotrope B, each atom of element E is surrounded by three other E atoms to form a sheet like structure.

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Solution : a i Ethyne:- Single bonds: Two; Triple bond: One ii Ethene:- Single bonds: Four; Double bond: One iii Ethane:- Single bonds: Nine; Double bonds: Three Question 35: a Write two points of difference in the structures of diamond and graphite. Compound X reacts with Y on warming in the presence of cone. Write the names and structural formulae : a if A is a cyclic compound b if B is an open chain compound c Which compound contains single bonds as well as a double bond?. Question 31: a Name the gas evolved when ethanol reacts with sodium. Solution : a Liquid X is ethanoic acid; it belongs to homologous series of carboxylic acids.

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Solution : b Since, ethanol burns with a clear flame giving a lot of heat, therefore, it is used as a fuel. Manjit Kaur has been a school teacher for several years, and she has co-authored many science books. C 6H 6, C 6H 10, C 6H 12, C 6H 14 c Which of the two has a branched chain : isobutane or normal butane? Question 8: Name two catalysts which can be used in the hydrogenation of unsaturated compounds. Velocity v : It is defined as the distance travelled by a wave in onesecond. Solution : Question 59: A colourless organic liquid X of molecular formula C 2H 40 2 turns blue litmus to red. Doch da eröffnen ihm eine Vision der Eldunarí, unerwartete Besucher und eine spannende Legende der Urgals neue Perspektiven.

Class 11

Doing this you will get all the video lectures there. The structure of graphite is very different from that of diamond. Each carbon atom in the diamond crystal is linked to four other carbon atoms by strong covalent bonds. Write chemical equation of the reaction involved. Another colourless organic liquid Y of molecular formula C 2H 60 has no action on any litmus but it is used as a nail polish remover. Solution : Molecular formula: C 8H 16 Question 67: What is the molecular formula and structural formula of a cyclic hydrocarbon whose one molecule contains 8 hydrogen atoms? Lakhmir Singh Chemistry Class 9 Solutions.