SYLLABUS CHEMISTRY (043) CLASS-XII – (2012-13) Annexure - ‘ I ’ S.No. 1. 2. 3. 4. Type of Question Long Answers (LA) Short Answers-II (SA II) Short Answers-I (SA-I) Very Short Answer (VSA) Total Marks for No. of Total Marks each Question Questions 5 3 2 1 3 9 10 08 30 15 27 20 08 70 Weightage 4 5 5 5 4 3 8 5 3 4 4 6 4 4 3 3 70 Total: S.No. UNIT 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. Solid State Solutions Electrochemistry Chemical Kinetics Surface Chemistry General Principles
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human body. Sodium fluoride is poisonous‚ but has been traced to be beneficial to humans in the prevention of tooth decay. Sodium chloride is added to many of our foods to increase flavor. Sodium chloride is important for many life processes‚ but too much intake is linked to high blood pressure. Sodium bromide is distributed throughout body tissues. Sodium iodine controls cell growth. The principal oxidation number of the halogens is -1. All halogens‚ except fluorine have other oxidation numbers. In
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Dyeing & Printing Classification of Dyes‚ Application of Dyes on Textile Materials‚ Introduction to Different types of Dyeing Machineries Dyeing & Printing Title of Contents 1.0. 2.0. 3.0. Introduction to Textile Dyeing Classification of Dyes Dyeing Process 3.1. 3.2. 3.3. 3.4. 3.5. 3.6. 3.7. 3.8. 3.9. 3.10. 3.11. 3.12. 4.0. Dyeing Methods Comparison of Dyeing in Various Stages Special Dyeing Effects Application of Dyes on Textile Materials Direct Dyes Azoic Colors Reactive Dyes Vat Dyes Acid
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adsorption‚ coagulation‚oxidation and precipitation were commonly used to treat dyes in wastewater effluent. Among these treatments‚ advanced oxidation processes (AOPs) had been widely investigated by researchers around the world and it considered as a promising treatment method to destroy these organic pollutions in wastewater. One of the AOPs so called wet air
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Compare the Effectiveness of Alcohol in Hand Disinfect Products Introduction Hands are regarded as a major source of transmitting infection.It has been estimated that there are not less than 10000 organisms per cm2 of normal skin. This include both nonpathogenic resident flora as well as pathogenic transient flora(Carter et al.‚ 2000). On the other hand‚ health care-associated infections constitute one of the greatest challenges of modern medicine (Mathur‚ 2011). Pandemic and avian
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calculate the percentage of Mn and acetyl acetone and the empirical formula THEORY Manganese is a first row transition metal that has a tremendous variety of oxidation states that appear in its compounds. The oxidation numbers range from Mn (III) in compounds like Mn(NO)3CO to Mn (VII) in KMnO4. Compounds of manganese range in oxidation number between theses two extremes. This experiment involves the preparation of a Mn (III) complex of actylacetone (also named 2‚4-pentanedione) which is a useful
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visible bubbles and light brown liquid | Copper Sulfate (CuSo4) | Yes | Light bubbles | Changes color to brown and oxidation is observed | Ethanol (c2H5OH) | No | Nothing changes | Nothing changes | Calcium Hydroxide (Ca(OH)2) | Yes | Light bubbles | Light bubbles but more than in anode | Potassium Bromide (KBr2) | Yes | Produced yellow color and bubbles | Bubbles | Sodium Iodide (NaI) | Yes | Produced yellow brown and bubbles | A lot
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Unit 1 – Lesson 1 Chemistry Key Questions 1. Element Standard Notation # Of Electrons # Of Protons # Of Neutrons Sodium 23 11 Na 11 11 12 Chromium 24 Ca 26 26 27 ? Phosphorus 32 P 15 15 16 2. Fireworks; Which metals burn to produce these colours? Red – Lithium (Sr) Blue – Cesium (Cs) Pink – Potassium (K) Yellow/Green – Copper (Cu) Orange – Carbon (Ca) 3. Let’s say that the three bottles contain Fe(NO3)3‚ BaCl‚ and AgNO3. These are Iron (III) Nitrate‚ Barium Chloride
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concentration of electrolyte of the potential difference in voltaic cell. Introduction: Chemical reactions involving the transfer of electrons from one reactant to another are called oxidation-reduction reactions or redox reactions. In a redox reaction‚ two half-reactions occur; one reactant gives up electrons (undergoes oxidation) and another reactant gains electrons (undergoes reduction). Voltaic cell is a device in which a redox reaction spontaneously occurs and produces an electric current. In order
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important safety feature in vehicles. Sodium azide‚ potassium nitrate and silicon dioxide have been used in one design of airbag. [Source: www.hilalairbag.net] Sodium azide‚ a toxic compound‚ undergoes the following decomposition reaction under certain conditions. 2NaN 3 (s) → 2Na (s) + 3N 2 (g) Two students looked at data in a simulated computer-based experiment to determine the volume of nitrogen generated in an airbag. (a) Sodium azide involves ionic bonding‚ and
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