TS SR Chemistry IMP Questions 2024-25 PDF

SR CHEMISTRY 1:5IMP QUESTIONS’S 2024-25 QUESTION NO-1 SOLUTIONS 1. What are colligative properties, Give examples. 2. What are isotonic solutions? Give example. 3. Calculate the mole fraction H2SO4 in solution containing 98% H2SO4 by mass. 4. Define osmotic pressure 5. S...

SR CHEMISTRY 1:5IMP QUESTIONS’S 2024-25 QUESTION NO-1 SOLUTIONS 1. What are colligative properties, Give examples. 2. What are isotonic solutions? Give example. 3. Calculate the mole fraction H2SO4 in solution containing 98% H2SO4 by mass. 4. Define osmotic pressure 5. State Henry’s law.? What are colligative properties, Give? QUESTION NO-2 ELECTROCHEMISTRY 1. What is metallic corrosion? Give one example 2. Give the electrode reactions occurring at the anode and at the cathode in H 2-O2 fuel-cell? 3. What is a primary battery? Give one example. 4. What are galvanic cell or a voltaic cell? Give one example. 5. What is standard hydrogen electrode? (OR) CHEMICAL KINETICS 1. What are pseudo first order reactions? Give one example? 2. Give two examples for zero order reactions? 3. Define order of a reaction? Illustrate your answer with an example? 4. A reaction has a half-life of 10 minutes. Calculate the rate constant for the first order reaction. 5. What is fuel cell? How is it different from conventional galvanic cell? QUESTION NO-3 GENERAL PRINCIPLES OF METALLURGY 1. Give the composition of the following alloys. a) Brass b) Bronze c) German silver 2. Write any two ores with formulae of the following metals: a) Aluminium b) Zinc c) Iron d) Copper 3. What is matte? Give its composition. 4. What is the role of cryolite in the metallurgy of aluminium? 5. What is blister copper? Why is it so called? 6. Explain the terms gangue and slag. QUESTION NO-4 P-BLOCK ELEMENTS 1. What is inert pair effect? 2. What is allotropy? Write any two allotropes of phosphorous. 3. Nitrogen molecule is highly Stable-Why? 4. What happens when white phosphours is heated with con. NaOH solution in an inert atmosphere of CO 2? 5. Nitrogen exists as diatomic molecule and phosphours as P 4-why 6. NH3 forms hydrogen bonds but PH3 does not -why? QUESTION NO-5 P-BLOCK ELEMENTS 1. What is tailing of mercury? How is it removed? 2. H 2O is neutral while H2S is acidic – explain? 3. Chlorine acts as an oxidising agent-explain with two examples? 4. In modern diving apparatus, a mixture of He & O2 is used-why? 5. Write the shapes of XeO3 and XeF2 ? & XeF4 6. List out the uses of Argon. QUESTION NO-6 d &f BLOCK ELEMENTS& CORDINATIONS COMPOUNDS 1. Zn2+ is diamagnetic whereas Mn2+ is paramagnetic 2. Calculate the spin only magnetic moment of Fe +2(aq) ion 3 What is an ambidentate ligand? Give example. 4. What is misch-metals give its composition and uses 5. CuSO4.5H 2O is blue in colour whereas anhydrous is colourless. Why? 6. What are transition elements? Give example. Lanthanoid contraction. QUESTION NO-7 ORGANIC CHEMISTRY 1. What are the ambident nucleophiles? 2. What are Enantiomers? 3. Briefly explain Wurtz & Wurtz-Fitting Reaction? 4. Explain the reaction of Aniline with nitrous acid. (Diazotisations) 5. Explain the Kolbe’s reaction 6. Explain Reimer-Tiemann reaction. QUESTION NO-8 ORGANIC CHEMISTRY 1. Explain Williamsons ether synthesis.? 2. Compare the acidic strength of acetic acid, chloroacetic acid, benzoic acid and phenol? 3. What is Tollens reagent? Explain its reaction with Aldehydes. 4. Write the Sandmeyer, Gattermann reaction? 5. Write the carbylamine reaction. 6. Explain Decarboxylation. (OR) POLYMERS 1. What is PHBV? How is it useful to man? 2. What is vulcanization. 3. What do you mean by polydispersity index? 4. What is Bio-degradable polymer? Give two examples. 5. Give the structure of Nylon-2-Nylon-6 6. Write the names and structures of the monomers of the following polymers. (i) Buna-S (ii) Buna-N (iii) Dacron (iv) Neoprene. POLYMERS 1. Write Zeglar-natta catalyst 2. Mention the structures and names of the monomers used for preparing the following polymers. a) Bakelite b) Poly styrene c) Teflon d) Poly vinyl chloride (PVC) e) Nylon - 6,6 f) Glyptal g) Terylene 3. What is poly merisation? Give an example. 4. What is an addition polymer? Give an example of an addition polymer. 5. What are fiber’s? Give example. QUESTION NO-9 CHEMISTRY IN EVERYDAY LIFE 1. What are food preservatives? Give example. 2. What are antacids? Give example. 3. What are artificial sweetening agents? Give example. 4. What are disinfectants? Give example. 5. What are antibiotics? Give example. 6. What are antihistamines? Give example? QUESTION NO-10 CHEMISTRY IN EVERYDAY LIFE 1. What is tincture of iodine? What is its use? 2. What is the difference between a soap and a synthetic detergent? 3. What are analgesis? How are they classified? Give one example for each. 4. What are non-narcotic analgesics? Give example. 5. What are tranquilizers? Give example. 6. What are antiseptics? Give example? 7. What are antibiotics? Give example. (OR) BIOMOLECULES 1. What is Zwitter ion? Give an example. 2. What are essential and non-essential amino acids? Give one example for each. 3. What are the ambident nucloephiles 4. Name the vitamin responsible for the coagulation of blood? 5. What is denaturation? Give an example? 6. What are fibrous proteins? Give example? II. SHORT ANSWER QUESTION: QUESTION NO:11 SOLID STATE: 1. Derive Bragg’s equation. 2. What are Schottky, Frenkel defect 3. Classify each of the following as either a p-type or a n-type semiconductor. (i) Ge doped with In (ii) Si doped with B. 4. Explain Antiferromagnetism with suitable example. & What are f-centres? 5. In terms of band theory, what is the difference between a conductor and a semiconductor? QUESTION NO:12 SOLUTIONS: 1. What is relative lowering of vapour pressure? How is it useful to determine the molar mass of solute? 2. State Raoult’s law. Calculate the vapour pressure of a water at 293K is 17.535 mm.Hg Calculate the Vapour pressure of the solution at 293 K when 25g of glucose is dissolved in 450 g of water. 3. Define mole fraction? Calculate the mole fraction of H 2SO4 in a solution containing 98% H2SO4 by mass. 4. Calculate the mass of non-volatile solute (molar mass 40g mole -1) which should be dissolved in114g Octane to reduce its vapour pressure to 80%. 5. A solution of glucose in water labeled as 10% W/W. What would be the molarity of the solution? QUESTION NO:13 SURFACE CHEMISTRY: 1. What is catalysis? How is catalysis classified? Give two examples for each. 2. What are different types of adsorptions? Give any four differences between characteristics of the different types. 3. What is an emulsion? Explain the classification of emulsions with examples? 4. What are micelles? Discuss the mechanism of micelle formation and cleaning action of soap. 5. How are colloids classified on the basis of interaction between dispersed phase and dispersion medium? QUESTION NO:14 METALLURGY 1. Write down the chemical reactions taking place in the extraction of zinc from zinc blende. 2. Explain the purification of sulphide ore by froth floatation method. 3. Giving examples to differentiate roasting and calcination. 4. Explain briefly the extraction of aluminium from bauxite. 5. Outline the principles of refining of metals by the following methods. a) Zone refining b) Electrolytic refining c) Poling d) Vapour phase refining QUESTION NO:15 D&F – BLOCK ELEMENTS & CO- ORDINATION COMPOUNDS 1. Explain Werner’s theory of coordination compounds with suitable examples. 2. Write the characteristic properties of transition elements 3. Using IUPAC names write the formulae for the following: (i) Tetrahydroxozincate (II) (ii) Hexaamminecobalt(III) sulphate (iii) Potassium tetrachloropalladate (II) (iv) Potassium tri(oxalato) chromate (III) 4. Using IUPAC names write the systematic names of the following: (i) [Co(NH3)6]Cl3 (ii) [Pt(NH3)2Cl(NH2 CH3)] Cl (iii) Ti(H2O)6]+3 (iv) K2[PdCl4] (v) K3[Fe(CN)6] (vi) Fe4[Fe(CN)6]3 (vii) [Ni(C0)4] 5. Explain the terms (i) Ligand (ii) Coordination number (iii) Coordination entity (iv) Central metal atom QUESTION NO:16 BIOMOLECULES 1. What are hormones? Give one example for each. i) Steroid hormones ii) Poly peptide hormones and iii) Amino acid derivatives. 2. Give the sources of the following vitamins and name the diseases caused by their deficiency. a) A b) D c) E and d) K 3. Explain the denaturation with suitable examples. 4. What are enzymes? Give examples. 5. Write important of carbohydrates? QUESTION NO:17 HALOALKANES AND HALOARENS 1. Explain SN1 SN2 & reactions 2. Explain the acidic nature of phenols and compare with that of alcohols. 3. How will you can carry out the following conversions? 1) Ethane to bromoethane 2) Toluene to benzyl alcohol 4. Write the structure of the following organic halides. i. 1-Bromo-4-sec-butyl-2-methylbenzene ii. 2-Choloro-1-phenylbutane iii. 4-t-butyl-3-idoheptane iv. P-bromochlorobenzene QUESTION NO:18 ORGANIC COMPOUNDS COTAINING C, H, O AND NITRO COMPOUNDS 1. Write the structure of the following compounds whose IUPAC names are (i) 2-methylbutan-1-ol (ii) 2,3-diethylphenol (iii) 1-ethoxypropane (iv) cyclohexylmethanol 2. How do you prepare ehtyl cyanide and Ethyl isocyanide from a common alkyl halide? 3. Define the following: i) Racemic mixture ii) Retention of configuration iii) Recemisation 4. What is tollens reagent? explain its reaction with Aldehydes 5. Compare the basicity of the following in gaseous and in aqueous state and arrange them in increasing order of basicity. CH3 NH2 , (CH3)2 NH , (CH3)3N and NH3 II. LONG ANSWER QUESTIONS: QUESTION NO:19 ELECTRO CHEMISTRY & CHEMICAL KINETICS 1. (a) State and Explain Kohlrausch’s law of independent migration of ions. (b)Give the applications of Kohlrausch’s law of independent migration of ions. 2. Give a detailed account of the collsion theory of reaction rates of bimolecular gaseous reactions. 3. (a) What is electrolysis? and State Faraday’s laws of electrolysis. (b) A solution of is electrolysed for 10 minutes with a current of 1.5 amperes. What is the mass of copper deposited at the cathode? 4. (a) What are galvanic cells? Explain the working of a galvanic cell with a neat sketch taking Daniel cell as example? (b) What is “molecularity” of a reaction? How is it different from the “order” of a reaction? Name one bimolecular and one trimolecular gaseous reaction. QUESTION NO: 20 P- BLOCK ELEMENTS: 1. How is ozone prepared from oxygen? Explain its reaction with a) C2H4 b) KI c) Hg d) PbS e) Ag 2. How is ammonia manufactured by Haber’s process? Explain the reactions of ammonia with 3. How is nitric acid manufactured by Ostwald’s process? How does react with the following? a) Copper b) Zn c) S8 d) P4 4. How is chlorine prepared in the laboratory or Deacon’s method? How does it react with the following? a) Iron b) NaOH c) Acidified FeSO4 d) Iodine e) H2S f) Na2S2O3 g) Excess NH3 (h) Ca(OH)2 QUESTION NO:21 ORGANIC CHEMISTRY 1. Explain the following with one example a) Decarboxylation. b) Cross condensation c) Hell - Volhard - Zelinsky (HVZ) reaction d) Aldol condensation d) Aldol condensation 2. Explain the following a) Cannizzaro reaction b) Acetylation c) Wurtz reaction d) Cross aldol condensation 3. a) Write the equation involved in the reaction of nitrous acid with Ethylamine and Aniline b) How do you carry out the following conversions: i) Benzoic acid to Benzamide, ii) Aniline to p-bromo aniline