MTP Chemistry 12th Past Paper PDF

# CLASS: HSP II ## M. MARKS: 70 ## General Instructions: 1. There are a total of four sections in the question paper. All questions are compulsory. 2. Section A contains 10 objective type questions/multiple choice questions of 1 mark each. 3. Section B contains 9 very short answer type questions of...

# CLASS: HSP II ## M. MARKS: 70 ## General Instructions: 1. There are a total of four sections in the question paper. All questions are compulsory. 2. Section A contains 10 objective type questions/multiple choice questions of 1 mark each. 3. Section B contains 9 very short answer type questions of 2 marks each to be answered in 20 to 30 words. 4. Section C contains 9 short answer type questions of 3 marks each to be answered in 100 to 150 words. 5. Section D contains 3 long answer type questions of 5 marks each to be answered in 150 to 200 words. 6. Use log tables if necessary, the use of scientific calculators is not allowed. ## SUBJECT: CHEMISTRY ## TIME: 3 HOURS | Section | Question Type | No. of Questions | Marks | |---|---|---|---| | A | Objective | 10 | 10 | | B | Very Short Answer | 9 | 18 | | C | Short Answer | 9 | 27 | | D | Long Answer | 3 | 15 | ## SECTION A ### Q1. Select the correct one : **(i) The molarity of pure water is:** a) 5.556 mol/litre b) 55.56 mol/litre c) 18 mol/litre d) 0.18 mol/litre **(ii) Which of the following conditions is correct for an ideal solution?:** a) ΔHmix = 0 & AVmix=0 b) AHmix > 0 & AVmix>0 c) ∆Hmix <0 & AVmix<0 d) AHmix >0 & AVmix<0 **(iii) Which of the following is not a good conductor of electricity?:** a) CH3COONa b) C2H5OH c) NaCl d) KOH **(iv) The units of rate constant for Second Order Reaction is:** a) mol litre sec-1. b) litre mol¹ sec¯¹ c) litre'mol sec¹ d) sec¯¹ **(v) Which of the following Oxidation state is common for all Lanthanoids?:** a) +3 b) +2 c) +4 d) +5 **(vi) The IUPAC name of the compound shown below** ``` CI \ C / \ Br-C-H | H ``` **is:** a) 2- Bromo -6 – chlorocyclohex -1 ene b) 6 - Bromo -2 - cyclochlorohexene c) 3 - Bromo-1 -chlorocyclohexene d) 1 - Bromo-3 - chlorocyclohexene **(vii) Which of the following is most acidic?:** a) Benzyl alcohol b) Cyclohexanol c) Phenol d) m - Chlorophenol **(viii) The product of the following reaction is CH3CN__Na(Hg) + C2H5OH X:** a) CH3CONH2 b) CH3-CH2-NH2 c) C2H6 d) CH3-NH-CH3 **(ix) Hydrolysis products of Lactose are:** a) glucose and glucose b) glucose and fructose c) glucose and galactose d) none of these **(x) Vitamin A is:** a) Ascorbic acid b) Thiamine c) Calciferol d) Retinol ## SECTION B ### Q2. Short Answer Type Questions: **(i) Define the terms:** a) Coordination Number b) Ligands **(ii) Write the IUPAC names of:** a) [Cu(NH3)4SO4] b) [Ni(CN)6]²- **(iii) What is Markovnikov’s Rule?** **(iv) Distinguish between Primary, Secondary and Tertiary alcohols by Lucas test.** **(v) What is Carbylamine reaction?** **(vi) Give sources and deficiency diseases of Vitamin C & D.** **(vii) Define Rate of a Reaction. Give one example of Zero Order Reaction.** **(viii) Define Activation energy and write Arrhenius equation.** **(ix) Give elementary idea of Collision theory.** ## SECTION C ### Q3. Short Answer Type Questions: **(i) State and Explain Faraday’s 2nd Law of electrolysis.** **(ii) Explain Denaturation of Proteins.** **(iii) Write three methods of Preparation of Amines.** **(iv) Give three oxidizing properties of K2Cr2O7.** **(v) What is Lanthanide Contraction? What are the causes of Lanthanide Contraction?** **(vi) What is meant by unidentate, bidentate and hexadentate ligands? Give examples.** **(vii) What are the effects caused by Freons and DDT on the environment?** **(viii) Discuss:** a) Reimer – Tiemann’s Reaction b) Kolbe’s Reaction **(ix) What is:** a) Gattermann – Koch Reaction b) Fries Rearrangement. ## SECTION D ### Q4. Long Answer Type Questions: **(i) Define Molality & Normality. Calculate the molarity and normality of a solution of H2SO4 having 0.49 gm of it dissolved in 450 ml of solution.** **OR** **Define depression in freezing point. How can you calculate the molecular mass of a non-volatile solute with it.** **(ii) Define Corrosion of a metal. Explain the mechanism of rusting of iron.** **OR** **What is Kohlrausch’s Law? Explain its application for calculation of molar conductivity at infinite dilution for weak electrolytes.** **(iii) Write five methods of preparation of Ketones** **OR** **Discuss:** a) Wolf-Kishner’s Reduction b) Rosenmund’s Reduction c) Stephen Reduction