{"id":6060,"date":"2023-11-04T06:37:34","date_gmt":"2023-11-04T01:07:34","guid":{"rendered":"https:\/\/kseebsolutions.guru\/?p=6060"},"modified":"2023-11-06T11:37:38","modified_gmt":"2023-11-06T06:07:38","slug":"karnataka-sslc-science-model-question-paper-2","status":"publish","type":"post","link":"https:\/\/kseebsolutions.guru\/karnataka-sslc-science-model-question-paper-2\/","title":{"rendered":"Karnataka SSLC Science Model Question Paper 2 With Answers"},"content":{"rendered":"

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

Karnataka State Syllabus SSLC Science Model Question Paper 2 With Answers<\/h2>\n

Time: 3 Hours
\nMax Marks: 80<\/p>\n

I. Four alternatives are provided for each of the following questions or incomplete statements. Choose the most appropriate alternative and write with its alphabet. ( 8 \u00d7 1 = 8 )<\/span><\/p>\n

Question 1.
\nPart of the flower that develops into fruit and part the seed that develops into root respectively are
\nA) Ovary and plumule
\nB) Plumule and radicle
\nC) Ovary and radicle
\nD) Ovary and ovule
\nAnswer:
\nC) Ovary and radicle<\/p>\n

Question 2.
\nThe chemical equation that represent neutralization reaction among the following is
\nA) BaCl2<\/sub> + H2<\/sub>SO4<\/sub> \u2192 BaSO4<\/sub> + 2HCl
\nB) MnO2<\/sub> + 4HCl \u2192 MnCl2<\/sub> + 2H2<\/sub>O + Cl2<\/sub>
\nC) 2NaOH + H2<\/sub>SO4<\/sub> \u2192 NaSO4<\/sub> + 2H2<\/sub>O
\nD) AgNO3<\/sub> + HCl \u2192 AgCl + HNO3<\/sub>
\nAnswer:
\nC) 2NaOH + H2<\/sub>SO4<\/sub> \u2192 NaSO4<\/sub> + 2H2<\/sub>O<\/p>\n

Question 3.
\nThe action of bile can be termed as :
\nA) Esterification
\nB) Hydrogenation
\nC) Oxidation
\nD) Emulsification
\nAnswer:
\nD) Emulsification<\/p>\n

\"Karnataka<\/p>\n

Question 4.
\nWhich of the following are environment friendly practices ?
\nA) Carrying cloth – bags to put purchases while shopping.
\nB) Switching of unnecessary lights & fans
\nC) Walking to school instead of getting your mother to drop you on her scooter
\nD) All the above
\nAnswer:
\nD) All the above<\/p>\n

Question 5.
\nBauxite is an ore of which metal
\nA) Iron
\nB) Aluminium
\nC) Copper
\nD) Tin
\nAnswer:
\nB) Aluminium<\/p>\n

Question 6.
\nThe frequency of power supply used in India
\nA) 70 HZ
\nB) 60 HZ
\nC) 50 HZ
\nD) 30 HZ
\nAnswer:
\nC) 50 HZ<\/p>\n

Question 7.
\nOn passing excess, of CO2<\/sub> gas in an aqueous solution of calcium carbonate milkness of the solution
\nA) Persists
\nB) Fades
\nC) Deepens
\nD) Disappears
\nAnswer:
\nB) Fades<\/p>\n

\"Karnataka<\/p>\n

Question 8.
\nWhich of the following is a plant hormone
\nA) Thyroxin
\nB) Cytokinin
\nC) Insulin
\nD) Oestrogen
\nAnswer:
\nB) Cytokinin<\/p>\n

II. Answer the following questions ( 8 \u00d7 1 = 8 )<\/span><\/p>\n

Question 9.
\nState ohm\u2019s law.
\nAnswer:
\nUnder similar physical conditions and at constant temperature the current flowing thought a wire is directly proportional to the potential difference applied across its ends.<\/p>\n

Question 10.
\nWhy does a ray of light bend when it travels from one medium into another?
\nAnswer:
\nDue to changes in velocity of light in the medium and to reduce the time to travel the same.<\/p>\n

Question 11.
\nWhat id mutation.
\nAnswer:
\nways to protect their DNA from changes inspite of those mechanisms, however changes in the DNA occasionally do occur. Any changes in the DNA sequence is called a mutation.<\/p>\n

Question 12.
\nWhy does raw bread taste sweeter on mastication ?
\nAnswer:
\nSalivary amylase which converts starch into sugars.<\/p>\n

\"Karnataka<\/p>\n

Question 13.
\nWhy does a copper vessel develop with green coating in rainy season ?
\nAnswer:
\nOxygen, carbon dioxide and water vapour of the air attack copper metal forming green coloured basic copper carbonate. The formula is CuCO3<\/sub>, CU(OH)2<\/sub><\/p>\n

Question 14.
\nWill Current flow more easily through a thick wire or thin wire of the same material when connected to the same source ? Why ?
\nAnswer:
\nThe current will flow more easily through thick wire because the resistance of a conductor is inversely proportional to area of cross section. If thickness of the wire less is resistances and hence more easily the current flows.<\/p>\n

Question 15.
\nWhy does distilled water not conduct electricity whereas rain water does ?
\nAnswer:
\nDistilled water cannot conduct electricity because it does not contain ions while rainwater conducts electricity as it contains ions due to presence of dissolved salts in it.<\/p>\n

Question 16.
\nWhat is reflex arc ?
\nAnswer:
\nThe structural and functional unit that carries out reflex action is called a reflex arc.<\/p>\n

III. Answer the following questions ( 8 \u00d7 2 = 16 )<\/span><\/p>\n

Question 17.
\nAn electric bulb of 200 \u03a9 draws a current of 1 ampere. Calculate the power of the bulb. The potential difference at is ends and the energy in kwh consumed in burning it for 5h.
\nAnswer:
\nPower of the bulb
\nPower of the bulb P = I2<\/sup>R= (1)2<\/sup> x 200
\nP = 200 W
\nEnergy consumed by bulb in 5h in burning
\n= Power x time
\n= 200 x 5
\n= 1000 wh = 1 kwh.<\/p>\n

\"Karnataka<\/p>\n

Question 18.
\nWhat are structural isomers ? Name the first member of alkanes that shows structural isomerism.
\nAnswer:
\nCompounds with identical molecular formula but different structures are called structural isomers.
\nButane or C4<\/sub>H10<\/sub><\/p>\n

Question 19.
\nDraw the circuit symbols of the following
\ni) Variable resistance
\nii) Wire crossing without joining.
\nAnswer:
\n\"Karnataka<\/p>\n

Question 20.
\nDescribe how hydro-energy can be converted into electrical energy.
\nAnswer:<\/p>\n