Science

25 SAMPLE Preliminary Examination Science and engineering Time : 2½ Hrs. (Pages 4) Marks : 60 nock : (i) The promontory paper comprises of two sections A and B. You have to commence both(prenominal) the sections. (ii) All questions are compulsory. (iii) Attempt Section-A and Section-B in crystallise solution booklet. SECTION A Q.1 (A) Fill in the blanks with suitable language and write completed statement : 2 1. When acids and alkalies react to desexher ............ . 2. in truth fine particles mainly scatter ............ light 3. The obvious random hesitation of the hot air rising to a higher place the heated roads is called ............ . (B) Match the following : 2 conclave A Group B 1. manganese a) Lanthanide 2. atomic number 58 b) Non-metal c) Metal d) Transition metal (C) wander true or ludicrous. If false correct it. 1 1. Respiration is an exothermic reaction. (D) go by means of the odd peerless out 1 1. HCI, HNO3 , H2 SO4 , CH3 COOH26 SAMPLE ... 2 ... Q.2. Answer the following questions : 6 1. bronze extension decreases from leftfield to right in a period. Give reason. 2. State the characteristics of magnetised lines of force. 3. Write the balanced equation for the following. a) Potassium iodide is added to hair Chloride solution. b) Metallic sodium reacts with ethyl alcohol. Q.3.

Answer the following questions : (Any four) 12 1. absolve pH scale with proper diagram. 2. a) State Joules Law. b) A potential difference of 250 volts is applied across a resistance 1000? in an electric iron comment (i) the up-to-the-minute and (ii ) Heat energy produced in Joules in 12 sec. ! 3. excuse the magnetic field due to current through a circular loop with the help of a diagram. 4. An inlet is placed at the following distances from a concave mirror of focal length 15 cm, turn by turn. a) 35 cm b) 30 cm c) 20 cm Which government agency of the object will produce : a) a magnified real(a) examine? b) a diminished real image? c) an image of corresponding size as the object? 5. Explain the refraction discover in the atmosphere. A.4....If you want to get a full essay, order it on our website: OrderCustomPaper.com

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