{"id":17629,"date":"2020-01-03T17:56:47","date_gmt":"2020-01-03T12:26:47","guid":{"rendered":"https:\/\/kseebsolutions.guru\/?p=17629"},"modified":"2021-07-02T15:31:21","modified_gmt":"2021-07-02T10:01:21","slug":"2nd-puc-chemistry-model-question-paper-1","status":"publish","type":"post","link":"https:\/\/kseebsolutions.guru\/2nd-puc-chemistry-model-question-paper-1\/","title":{"rendered":"2nd PUC Chemistry Model Question Paper 1 with Answers"},"content":{"rendered":"

Students can Download 2nd PUC Chemistry Model Question Paper 1 with Answers, Karnataka 2nd PUC Chemistry Model Question Papers with Answers<\/a> helps you to revise the complete Karnataka State Board Syllabus and score more marks in your examinations.<\/p>\n

Karnataka 2nd PUC Chemistry Model Question Paper 1 with Answers<\/h2>\n

Time: 3 Hrs 15 Min
\nMax. Marks: 70<\/p>\n

Part-A<\/span><\/p>\n

I. Answer all of the following. (Each question carries 1 mark) (10 \u00d7 1 =10)<\/span><\/p>\n

Question 1.
\nDefine VantHaffs factor.
\nAnswer:
\nVantHaff\u2019s factor is defined as \u201cThe ratio of normal molar mass to the abnormal molar mass\u201d.
\n\"2nd<\/p>\n

Question 2.
\nWhat are isotonic solutions?
\nAnswer:
\nTwo solutions having same osmotic at a given temperature are isotonic solutions<\/p>\n

Question 3.
\nMention the S.I unit for molar conductivity.
\nAnswer:
\ns.m2<\/sup> mol-1<\/sup> or s cm2<\/sup> mol-1<\/sup><\/p>\n

Question 4.
\nFor the reaction A + B \u2192 products the rate becomes doubled when concentration of only A is increased by two times, the rate is increased by four times, when the concentration B is alone is doubled what is the order of the reaction?
\nAnswer:
\n2 or two<\/p>\n

\"KSEEB<\/p>\n

Question 5.
\nName the enzyme used in the inversion of cane sugar.
\nAnswer:
\nInvertase<\/p>\n

Question 6.
\nName the method used for refining of Zirconium.
\nAnswer:
\nVan – Arkel method<\/p>\n

Question 7.
\nComplete the reaction
\nXeF4<\/sub> + O2<\/sub> F2<\/sub> \u2192 A + O2<\/sub> identify A.
\nAnswer:
\nXeF6<\/sub><\/p>\n

Question 8.
\nWhat is a Recemic mixture – ?
\nAnswer:
\nAn equimolar mixture of d and 1 isomrs is called recemic mixture.<\/p>\n

Question 9.
\nName the product obtained when acetaldehyde reacts with Hydroxyl amine.
\nAnswer:
\nAcetaldoxime<\/p>\n

Question 10.
\nName the nitrogenous base present in RNA only.
\nAnswer:
\nUracil<\/p>\n

Part-B<\/span><\/p>\n

II. Answer any FIVE of the following. (Each question carries 2 marks) (5 \u00d7 2 = 10)<\/span><\/p>\n

Question 11.
\nSilver forms CCP lattice and x-ray studies of its crystals show that the edge length of its unit cell is 408.6 pm. calculate the density of silver
\nAnswer:
\n\"2nd<\/p>\n

Question 12.
\nWhat is corrosion? Mention a general method to prevent it.
\nAnswer:
\nThe loss of metal in the form of its compounds due to the chemical attack by the environment is called corrosion of metal It is prevented<\/p>\n