<p> TIWARI TUTORIALS MODULE TEST PAPER</p><p>CBSE X</p><p>PHYSICS MM: 3 X 10 = 30</p><p>Q1. (a) Define electric potential. Write its S.I. unit. (b) A 4 ohm resistance wire is doubled on it. Calculate the new resistance of the wire. (c) A change of 25 C is moved from infinity to two points A and B in an electric field. The work done to move it to A is 10 J and B is 12.5J. What is the potential difference between the points A and B. (d) Define specific resistance. Write its S.I. unit. Q2. (a) A wire of length L and resistance R is stretched so that its length is doubled and the area of cross-section is halved. How will its : (i) resistance change (ii) resistivity change? (b) A nichrome wire of length L and area of cross section a/4 has a resistance R. Another nichrome wire of length 3l and area of cross section a/2 has resistance R . Find the ratio 1</p><p> of R1 : R.</p><p>(c) Two metallic wires A and B of same material are connected in parallel. Wire A has length(l) and radius (r) and wire B has length (2) and radius (2r). Compute the ratio of the total resistance of parallel combination and the resistance of a wire A.</p><p>(d) Write Ohm's Law . Show how you would connect three resistance, each of resistance 6 ohms, so that the combination has a resistance of (i) 9 ohms, (ii) 4 ohms.</p><p>Q3. (a) Draw a graph between specific resistance and temperature for (i) metals (ii) semiconductors (iii) alloys. (b) What are the advantages of connecting electrical devices in parallel with the battery instead of connecting them in series. (c) Find the cost of operating an electric toaster for two hours if it draws 8 A current on a 110 volt circuit. The cost of electrical energy is Rs.2.50 per kWh.</p><p>CHEMISTRY MM: 3 x 10 = 30</p><p>Q1. (a) Solution is kept in Zn vessel, it get a small pores in the bottom & side of vessel but the same observation is not seen when same FeSO solution kept in Cu vessel. Explain with reaction ? 4 (b) What do you means by precipitation reaction? Explain by giving two examples? (c) Pickles are not kept in Aluminium vessels why? </p><p>Q2. (a) Define the decomposition reaction? Give one reaction for the following - (i) Thermal decomposition (ii) Electrolyte decomposition (iii) Photo chemical decomposition. (b) Potassium chlorate on heating with MnO gives potassium chloride and oxygen. What type of reaction in 2 this? (c) What is Catalyst? Give one example of the positive and one example of Mg Catalyst?</p><p>Q3. (a) What do you understand by exothermic reaction and endothermic reaction? (b) Give one example of exothermic & Endothermic reaction. (c) Which of the following are endothermic and which one exothermic reaction? (i) Burning of natural gas (ii) Photosynthesis (iii) Electrolysis of water (iv) respiration MATHEMATICS MM: 5 x 5 = 25</p><p>Q1. Show that the square of any positive integer is of the form 3m or 3m + 1 for some integer m. Q2. 2 women and 5 men can together finish a piece of embroidery in 4 days while 3 women and 6 men can finish it in 3 days. Find the time taken by 1 women alone and 1 man alone to finish the embroidery. Q3. Use Euclid’s division algorithm to find the HCF of 4052 and 12576. Q4. In PQR, right angled at Q, PR + QR = 25 cm and PQ = 5 cm. Determine the values of sin P, cos P and tan P. Q5. If sum of the squares of zeros of the quadratic polynomial: is 40. Find the value of k.</p><p>BIOLOGY MM: 5 x 5= 25</p><p>Q1. Explain light reaction of photosynthesis. Q2. Define various components of Gastric juice. Q3. Differentiate between- (i) Saprophytic and Parasitic nutrition. (ii) Pepsin and Renin. (iii) Ingestion and Egestion (iv) Homodont and Hetrodont Q4. Explain the digestion of food in stomach. Q5. Draw a well labeled diagram of Human Digestive System?</p><p>ENGLISH MM: 10 x 3= 30</p><p>Q1. Change the following sentences into passive voice. (i) The teacher calls the roll. (ii) They are not selling their car. (iii) She has not spent all the money. (iv) You did not speak the truth. (v) Why did you take my book? </p><p>Q2. Change the following sentences into active voice. (i) The plants are watered by the gardener. (ii) Is a noise being made by the boys? (iii) Mangoes have been eaten by us. (iv) Which picture was seen by you last night? (v) My luggage had already been packed by me.</p><p>Q3. Read the extract given below and answer the questions that follow. Write each answer in your answer sheet in one or two sentences only. I am silver and exact, I have no preconceptions. Whatever I see I swallow immediately Just as it is, unmisted by love or dislike. I am not cruel, only truthful– The eye of a little god, four-cornered. </p><p>(i) Explain : ' I have no preconceptions'. (ii) What does the expression 'I swallow immediately' mean ? (iii) Which figure of speech is used in 'I swallow'? (iv) What other qualities does the mirror boast of ? </p>