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CBSE Class X Marking Scheme 2013: Science
S.No. Content Marks Theory Marks MCQ Total 1. Chemical Substances-Nature & Behaviour 16 5 21 2. World of Living 21 6 27 3. Natural Phenomenon 21 5 26 4. Natural Resources 6 - 6 64 16 80 Weightage...
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CBSE Class IX Marking Scheme 2013: English Communicative
EXAMINATION SPECIFICATIONS Division of Syllabus for Term II (October-March) Total Weightage Assigned Summative Assessment II 30% Section Marks Reading 20 Writing 25 Grammar 20 Literature 25 Formative...
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CBSE Class IX Marking Scheme 2013: English Language and Literature
EXAMINATION SPECIFICATIONS Division of Syllabus for Term II (October-March) Total Weightage Assigned Summative Assessment II 30% Section Marks Reading 20 Writing 20 Grammar 15 Literature 35...
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CBSE Class IX Marking Scheme 2013: Hindi
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CBSE Class IX Marking Scheme 2013: Sanskrit
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CBSE Class IX Marking Scheme 2013: Social Science
1. WEIGHTAGE TO FORM OF QUESTIONS Form of Questions Marks of Each Question Number of Questions Total Marks 1 M.C.Qs. 1 10 10 2. Short Answer (S.A.) 3 12 36 3. Long Answer (L.A.) 5 8 40 4. Map Question...
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CBSE Class IX Marking Scheme 2013: Mathematics
UNIT/TOPIC 1 2 3 4 Total Algebra (Linear Equations in Two Variables) 2(2) 6(2) 8(2) 16(6) Geometry (Quadrilaterals, Area, Circles, Constructions) 2(2) 4(2) 12(4) 20(5) 38(13) Mensuration (Surface...
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CBSE Class IX Marking Scheme 2013: Science
Click Here for Other Subjects Marking Scheme Click Here for Sample Papers, Question Papers and Other Important Information
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NTSE 2012: Official Answer key
The National Council of Educational Research and Training (NCERT) has uploaded the answer key of the National Talent Search Examination (NTSE) 2012 held on 13th May, 2012, on its website...
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NTSE 2012 – 2013: General Information
National Talent Search Scheme is a flagship activity of the NCERT started in the year 1963. The purpose of the scheme was to identify talented students and nurture their talent. Talent refers to the...
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CBSE Class 12 Chemistry Notes: Ores and Metallurgy – Metallurgical Processes III
Reduction of the metal oxide to free metal: The roasted ore is reduced to metallic state by the following methods: « Click Here for Previous Topic Click Here for Next Topic » Click Here to Go Back to...
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CBSE Class 12 Chemistry Notes: Ores and Metallurgy – Metallurgical Processes IV
Refining or purification of crude metal: « Click Here for Previous Topic Click Here for Next Topic » Click Here to Go Back to CBSE Class 12 Chemistry Ores and Metallurgy All Topic Notes Click Here for...
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CBSE Class 12 Chemistry Notes: Ores and Metallurgy – Summary of the...
Summary of the Extraction of Metals Some Important Illustrations to solve Illustration 1. The roasting of an ore of a metal usually results in conversion of the metal to the oxide. Why does the...
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CBSE Class 12 Chemistry Notes: Ores and Metallurgy – Extraction of Aluminum
Important ores of Aluminium « Click Here for Previous Topic Click Here for Next Topic » Click Here to Go Back to CBSE Class 12 Chemistry Ores and Metallurgy All Topic Notes Click Here for CBSE Class 12...
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CBSE Class 12 Chemistry Notes: Ores and Metallurgy – Extraction of Copper
Metallurgy of Copper Copper is extracted mainly from copper pyrites. The various steps involved are « Click Here for Previous Topic Click Here for Next Topic » Click Here to Go Back to CBSE Class 12...
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CBSE Class 12 Chemistry Notes: Ores and Metallurgy – Extraction of Silver
Metallurgy of Silver: Silver is mainly extracted from argentite (Ag2S) by Cyanide Process « Click Here for Previous Topic Click Here for Next Topic » Click Here to Go Back to CBSE Class 12 Chemistry...
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CBSE Class 12 Chemistry Notes: Ores and Metallurgy – Extraction of Lead
Extraction: Steps of extraction are shown in the following flow sheet: Reactions involved: Lead thus obtained contains other metals like Cu, Sb, Sn, Ag, Au, etc. and these make lead hard. In...
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CBSE Class 12 Chemistry Notes: Ores and Metallurgy – Extraction of Magnesium
Magnesium from sea – water is obtained by the Dow’s process. It consists of electrolysis of molten magnesium chloride using an iron cathode and a graphite anode. Following are the steps that involved...
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CBSE Class 12 Chemistry Notes: Ores and Metallurgy – Extraction of Iron
Smelting in the Blast furnace Reactions: Molten iron is heavier than molten slag. The two liquids are periodically tapped off and solidified into blocks called pigs. Preparation of wrought iron: «...
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CBSE Class 12 Chemistry Notes: Unit 6 – Ores and Metallurgy
CBSE Class 12 Chemistry Notes: Ores and Metallurgy – Introduction CBSE Class 12 Chemistry Notes: Ores and Metallurgy – Metallurgical Processes I CBSE Class 12 Chemistry Notes: Ores and Metallurgy –...
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