Science

25 SAMPLE Preliminary Examination Science and engineering science Time : 2½ Hrs. (Pages 4) Marks : 60 nock : (i) The marvel 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 dish up booklet. SECTION A Q.1 (A) Fill in the blanks with suitable voice communication and write completed statement : 2 1. When acids and alkalies react to desexher ............ . 2. in truth fine particles mainly scatter ............ light 3. The unmixed random hesitation of the hot air rising in a higher place the heated roads is called ............ . (B) Match the following : 2 host A Group B 1. manganese a) Lanthanide 2. cerium b) Non-metal c) Metal d) Transition metal (C) rewrite true or ludicrous. If false correct it. 1 1. Respiration is an exothermic reaction. (D) understand the odd peerless out 1 1. HCI, HNO3 , H2 SO4 , CH3 COOH26 SAMPLE ... 2 ... Q.2. Answer the following questions : 6 1. golden extension decreases from leave to right in a period. Give reason. 2. State the characteristics of magnetized 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. apologize 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 follow (i) the up-to-the-minute and (ii) Heat energy produc ed in Joules in 12 sec. 3. excuse the magne! tic field due to current with a circular loop with the help of a diagram. 4. An breathing in is placed at the following distances from a concave reflect of focal length 15 cm, turn by turn. a) 35 cm b) 30 cm c) 20 cm Which adjust of the object will produce : a) a magnified real(a) take in? b) a diminished real image? c) an image of same size as the object? 5. Explain the refraction notice in the atmosphere. A.4....If you want to get a full essay, order it on our website: BestEssayCheap.com

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