Science

25 SAMPLE Preliminary Examination Science and applied science Time : 2½ Hrs. (Pages 4) Marks : 60 nock : (i) The drumhead paper comprises of two sections A and B. You have to commence twain 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 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 seeming(a) random hesitation of the hot air rising in a higher place the heated roads is called ............ . (B) Match the following : 2 congregation A Group B 1. manganese a) Lanthanide 2. atomic number 58 b) Non-metal c) Metal d) Transition metal (C) couch true or ludicrous. If false correct it. 1 1. Respiration is an exothermic reaction. (D) befall the odd peerless out 1 1. HCI, HNO3 , H2 SO4 , CH3 COOH26 SAMPLE ... 2 ... Q.2. Answer the following questions : 6 1. bimetallic extension decreases from left(p) to right in a period. Give reason. 2. State the characteristics of magnetic 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. exempt 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 escort (i) the up-to-the-minute and (ii) Heat energy produced in Joules in 1! 2 sec. 3. excuse the magnetic field due to current through with(predicate) a circular loop with the help of a diagram. 4. An endeavor 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 stain of the object will produce : a) a magnified real(a) substitution class? b) a diminished real image? c) an image of same(p) size as the object? 5. Explain the refraction detect in the atmosphere. A.4....If you want to get a full essay, order it on our website: BestEssayCheap.com

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