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After the tremendous success of our last year Important Questions Bank for Gujarat HSC (12th Std) Board Exam 2016, 2017 and 2018 we have also created a list of Most Important Questions Bank for Gujarat (12th Std) HSC Board Exam 2019 which are likely to appear in HSC Board Exams this year.
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Chemistry Important Question Bank 2019 (English Medium)
- Explain: Carbon fibres and give their types and two uses.
- Give two chemical equations to prepare acetyl chloride and also give substitution reactions of chlorine group in acetyl chloride.
- Write preparation of Vulcanized rubber. State its properties and uses.
- Explain: Emulsion and its classification.
- Explain: Tendency of transition metal ion to form complex compounds.
- Give uses of Lanthanide elements.
- Explain Condensation reaction of Aldehyde and Ketone compounds by reactions only
- Explain: Hume and Rothery rules for alloys.
- Explain: The production of Potassium dichromate by giving equation. State its oxidising property by giving equation and uses.
- Draw diagram of Hydrogen fuel cell. Give its reactions taking place at anode and cathode and give its two principal uses.
- Explain : Metallic bond and also conduction of electricity in metal
- Write a short note on mechanism of Missile formation
- Write short note on Organo metallic compounds.
- Write a short note on Electrophoresis with diagram.
- Explain Preparation of Bakelite, give two uses.
- What is Actinide series? State properties and uses of the elements of this series.
- What is called activation energy? What are the necessary conditions for a chemical reaction to occur?
- Give the importance for Stereo Chemistry.
- Write a note on Pheromones.
- Name the oxy-acids of Phosphorus, giving their molecular and structural formula.
- Discuss the magnetic properties of Transition ions or compounds. The experimental values of magnetic moment of some compounds differ than their theoretical values. Why?
- Explain by giving chemical reaction for the intermediate obtained by reaction of Methyl magnesium iodide with Ethanal and Propanone which give alcohols on their hydrolysis.
- Explain: Different addition reaction of Ethanal.
- Explain Wolff-Kishner and Clemmenson reduction reactions.
- Derive formula of Langmuir Absorption Isotherm and express the equation at low and high pressure situations.
- Write a note on Breeder Reactor.
- What is meant by Molal Depression constant? Derive formula for Molal Depression constant.
- Describe energy band model. Explain the various electrical conductivity observed in substances on the basis of this theory.
- Explain Filler, Plasticizer and Anti-oxidants.
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