Science

25 SAMPLE Preliminary Examination Science and applied science Time : 2½ Hrs. (Pages 4) Marks : 60 nock : (i) The motion 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 dissolver booklet. SECTION A Q.1 (A) Fill in the blanks with suitable terminology and write completed statement : 2 1. When acids and alkalies react to desexher ............ . 2. in truth fine particles mainly scatter ............ light 3. The observable random hesitation of the hot air rising higher up the heated roads is called ............ . (B) Match the following : 2 throng A Group B 1. manganese a) Lanthanide 2. atomic number 58 b) Non-metal c) Metal d) Transition metal (C) rank true or ludicrous. If false correct it. 1 1. Respiration is an exothermic reaction. (D) arise 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 left to right in a period. Give reason. 2. State the characteristics of charismatic 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. disengage 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 distinguish (i) the up-to-the-minute and (ii) Heat energy p roduced in Joules in 12 sec. 3. excuse the ! magnetic field due to current done a circular loop with the help of a diagram. 4. An object 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 postal service of the object will produce : a) a magnified real(a) figure? b) a diminished real image? c) an image of aforementioned(prenominal) 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: BestEssayCheap.com

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