Download NIOS 10th Class April 2013 212 Science Question Paper

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? ?-? ? 24 ? ? ? ? ? ? ? ? ? 30 ? ? 1 ? ? ? ? ? 30 ? ?

This Question Paper consists 24 pages. Of this 30 questions including 1 figures for New syllabus and 30 questions for Old syllabus.

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SCIENCE AND TECHNOLOGY (? ? ?) (212)

General Instructions :

1. Candidate must write his/her Roll Number on the first page of the Question Paper.
2. Please check the Question Paper to verify that the total pages and total number of questions contained in the Question Paper are the same as those printed on the top of the first page. Also check to see that the questions are in sequential order.
3. For the objective type of questions, you have to choose any one of the four alternatives given in the question i.e. (A), (B), (C) or (D) and indicate your correct answer in the answer-book given to you.

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4. All the questions including objective type questions are to be answered within the allotted time and no separate time limit is fixed for answering objective type questions.
5. Making any identification mark in the answer-book or writing roll number anywhere other than the specified places will lead to disqualification of the candidate.
6. Write your Question Paper code No. 46/OS/1-A on the answer-book.
7. (a) The Question Paper is in English/Hindi medium only. However, if you wish, you can answer in any one of the languages listed below : English, Hindi, Urdu, Punjabi, Bengali, Tamil, Malayalam, Kannada, Telugh, Marathi, Oriya, Gujarati, Konkani, Manipuri, Assamese, Nepali, Kashmiri, Sanskrit and Sindhi. You are required to indicate the language you have chosen to answer in the box provided in the answer-book. (b) If you choose to write the answer in the language other than Hindi and English, the responsibility for any errors/mistakes in understanding the question will be yours only.

[Contd...

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46/OS/1-212_A] 1 www.FirstRanker.com

? ? :

1. ? ? ? ? ? ? ? ? ? ? ?
2. ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?
3. ? ? ? ? ? ? (A), (B), (C) ? (D) ? ? ? ? ? ? ? ? ? ? ?-? ? ? ? ? ? ?

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4. ? ? ? ?-? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?
5. ?-? ? ?-? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?
6. ? ?-? ? ? ? ? ? 46/OS/1-A ? ?
7. (?) ? ? ?/? ? ? ? ? ?, ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? : ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ? ? ? ? ? ?-? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? (?) ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? / ? ? ? ? ? ? ?

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IMPORTANT INSTRUCTIONS

1. This Question Paper Booklet contains two Question Papers one based on revised study material marked as "New Syllabus" and the other based on pre-revised study material marked as "Old Syllabus".
2. New Syllabus is compulsory for those who have registered for 2012-13 (Block-I) admission. (Those who are appearing in April 2013 under "New Syllabus".)
3. Old Syllabus is compulsory for those who had registered before 2012-13 (Block- I) admission.
4. Answer only one Question Paper from given two Question papers.

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5. Learners are not allowed to mix questions from the two given Question Papers.

? ?

1. ? ? ? ? ? ? ? : ? ? ? ? ? ? ? ? ? '? ?' ? ? ? ? ? ? ? ? ? ? ? ? ? ? '? ?' ? ? ?
2. ? ? ? ? ? ? ? ? ? ? 2012-13 (?-I) ? ? ? ? (? ? 2013 ? '? ?' ? ? ? ? ? ? ? ? ?)
3. ? ? ? ? ? ? ? ? ? ? 2012-13 (?-I) ? ? ? ? ?

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4. ? ? ? ? ? ? ? ? ? ? ? ? ?
5. ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?

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Time: 2½ Hours] SCIENCE AND TECHNOLOGY (? ? ?) (212) NEW [Maximum Marks: 85 [? : 85

? : 2 ?] New Syllabus / ? ?

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Note: (1) All questions are compulsory.

(2) Marks are given against each question.

? : (1) ? ? ? ? ?

(2) ? ? ? ? ? ? ? ? ? ?

1 1000 micrometre can also be written as : 1

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(A) 10-3 m (B) 10-6 m

(C) 10-9 m (D) 103 m

1000 ? ? ? ? ? ? ? :

(A) 10-3 ? (B) 10-6 ?

(C) 10-9 ? (D) 103 ?

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46/OS/1-212_A] 4 www.FirstRanker.com [Contd...

2 Which of the following is not an SI unit ? 1

(A) Metre (B) Litre

(C) Ampere (D) Kelvin

? ? ?-? SI ? ? ? ?

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(A) ? (B) ?

(C) ? (D) ?

3 Identify which of the following reactions is a displacement reaction ? 1

(A) C+O2 ? CO2

(B) CaCO3 ? CaO+CO2

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(C) Zn+CuSO4 ? ZnSO4 + Cu

(D) AgNO3+HCl ? AgCl + HNO3

? ? ? ? ? ?-? ? ? ? ? ?

(A) C+O2 ? CO2

(B) CaCO3 ? CaO+CO2

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(C) Zn+CuSO4 ? ZnSO4 +Cu

(D) AgNO3+HCl ? AgCl + HNO3

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4 Which of the following is not an example of corrosion ? 1

(A) Rusting of iron

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(B) Wearing and tearing of moving machine parts

(C) Tarnishing of silver

(D) Formation of green coating on copper

? ? ? ? ? ? ? ? ?

(A) ? ? ? ?

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(B) ? ? ? ? ? ?

(C) ? ? ? ?

(D) ? ? ? ? ? ? ?

5 A body weighs 10N in air and 7N in water. The buoyant force exerted by water on the body is : 1

(A) 10N (B) 7N

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(C) 3N (D) 17N

? ? ? ? ? ? 10N ? ? ? 7N ? ? ? ? ? ? ? ? ? ? ? :

(A) 10N (B) 7N

(C) 3N (D) 17N

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6 The figure given along side shows displacement versus position graph of a wave for a period of 2s the wave is travelling with a velocity : 1

(A) 1mms-1 (B) 7ms-1

(C) 7mms-1 (D) 3.5ms-1

? ? ? ? ? ? 2s ? ? ? ? ? ? ? ? ? ? ? ? ? :

(A) 1mms-1 (B) 7ms-1

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(C) 7mms-1 (D) 3.5ms-1

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7 Gene combinations suggest that if father's gene is IA and mother's gene is IB then their offsprings can have blood group : 1

(A) A or O only (B) A or B only

(C) A, B or AB only (D) AB only

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? ? ? ? ? ? ? ? ? ? ? IA ? ? ? ? IB ? ? ? ? ? ? ? ? ? :

(A) ? A ? 0 (B) ? A ? B

(C) ? A, B ? AB (D) ? AB

8 A given quantity of water will have minimum volume at 1

(A) 0°C (B) 4°C

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(C) 8°C (D) 12°C

? ? ? ? ? ? ? ? ? ? ? ? ? ?

(A) 0°C (B) 4°C

(C) 8°C (D) 12°C

9 Which of the following is an inorganic compound ? 1

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(A) Sugar (B) Common salt

(C) Kerosene (D) Alcohol

? ? ?-? ? ? ? ?

(A) ? (B) ? ?

(C) ? (D) ?

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10 What are derived units ? Find the derived SI unit of density from fundamental SI units. 2

? ? ? ? ? ? ? SI ? ? SI ? ? ? ?

11 How will you dilute concentrated sulphuric acid ? What will be the affect of dilution on it pH ? 2

? ? ? ? ? ? ? ? ? ? ? ? pH ? ? ? ? ?

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12 Write systematic steps to seperate out the components of a mixture of iron granules, common salt and chalk powder. 2

? ? ?, ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?

13 An element 'X' has seven electrons in its outer most orbit and another element 'Y' has four electrons in its outer most orbit. If they combine to form a compound, what type of bond will be formed between them and why ? Write the formula of the compound formed by the combination of 'X' and 'Y'. 2

? ? 'X' ? ? ? ? ? ? ? ? 'Y' ? ? ? ? 4 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 'X' ? 'Y' ? ? ? ? ? ? ? ?

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14 Heavy army tanks are made to move on wide continuous chain belts, why? 2

? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?, ? ?

15 Describe clark's method for removal of temporary hardness of water. Write chemical equation involved. 2

? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?

16 Can CuSO4 solution be stored for a long time in an iron bucket ? Explain. 2

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? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?

17 Calculate the number of molecules in 45g of water. 4

(Molecular mass of oxygen is 32u and that of hydrogen is 2u)

45 ? ? ? ? ? ? ? ? ?

(? ? ? 32u ? ? ? ? 2u ?)

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18 Citing example state four merits of mendeleev's classification of elements. 4

? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?

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19 A body of mass 2 kg. is moving with a uniform speed of 30ms-1. A force of 6N is applied against the direction of motion. How much distance with the body move in 5s after that ? 4

2 ? ? ? ? ? 30ms-1 ? ? ? ? ? ? ? ? ? 6N ? ? ? ? ? ? ? ? ? ? ? ? ? ? 5s ? ? ? ? ? ? ?

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20 What is thermostat (ii) bimetallic strip. 4

21 With the help of a simple circuit diagram explain the working of a bimetallic strip as a thermostate : 4

(i) ?, (ii) ? ? ? ? ?

? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?

22 Image of same size is formed when an object is placed at 40cm in front of a concave mirror. Draw a labelled ray diagram to show image formation when the object is placed at a distance of 30cm from the same mirror. Describe the characteristics of the image formed. 4

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? ? ? ? ? ? ? ? ? 40cm ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 30cm ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?

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23 Draw a labelled diagram of a neuron. 4

? ? ? ? ? ? ?

24 In the light of Darwin's theory explain the terms: Adaptations and inheritence. Give one example of each. 4

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? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?-? ? ?

25 (a) Define the following terms : 4

(i) Metallurgy

(ii) Calcination

(iii) Thermite process

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(b) How are highly reactive metals like Na, k, Mg extracted ?

(a) ? ? ? ? ? :

(i) ? ?

(ii) ?

(iii) ? ?

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(b) ? ? ? ? ? Na, k, Mg ? ? ? ? ? ? ? ?

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26 A person is having cough, chest pain and low fever for more than 15 days. He is losing weight and appetite also. 4

(1) Name the disease the person is suffering from.

(ii) Is the disease communicable ?

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(iii) Write the name of causative organism for this disease ?

(iv) What steps will you take if the desease is confirmed ?

? ? ? 15 ? ? ? ? ? ?, ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?

(i) ? ? ? ? ? ? ? ? ?

(ii) ? ? ? ? ? ?

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(iii) ? ? ? ? ? ? ? ?

(iv) ? ? ? ? ? ? ? ? ? ? ?

27 Explain how :(i) Penguins and (ii) Camels have adapted to survive in their environments ? 4

? ? (i) ? ? (ii) ? ? ? ? ? ? ? ? ? ? ? ? ? ?

28 What is an earthquake ? How is its severity measured ? Mention two precautions you will keep during an earth quake. 4

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? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?

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29 Describe Rutherfords model of atom. What were the short comings of this model? How were these addressed by Bohr in his model of atom ? 6

? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?

30 A bulb is rated at 4W, 10V. 6

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(a) Find the resistance of the bulb and safe current for its maximum glow.

(b) How can you run it at 20V safely ?

(c) Find the power consumed when two such bulbs are connected to a 5V supply in

(i) Series (ii) Parallel

? ? ? 4W, 10V ? ?

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(a) ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?

(b) 20 ? ? ? ? ? ? ? ? ? ? ? ? ? ?

(c) ? ? ? ? ? ? 5V ? ? ? (i) ?, (ii) ? ? ? ? ? ? ? ? ? ? ?

31 What is meant by genetic disorder ? Name three genetic diseases. Describe the cause of each disease. 6

? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?

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Time : 2½ Hours] SCIENCE AND TECHNOLOGY (? ? ?) (212) OLD [Maximum Marks: 85

? : 2 ?] Old Syllabus / ? ? [? : 85

Note : (1) All questions are compulsory.

(2) Marks are given against each question.

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? : (1) ? ? ? ? ?

(2) ? ? ? ? ? ? ? ? ? ?

1 Which of the following is the property of electromagnetic waves ? 1

(A) Transverse waves

(B) Require material medium

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(C) Generated due to mechanical vibration of particles of the medium

(D) Velocity, is 330ms-1.

? ? ? ?-? ? ? ? ? ? ? ?

(A) ? ?

(B) ? ? ? ? ?

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(C) ? ? ? ? ? ? ? ? ?

(D) ? 330ms-1 ?

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2 The glass that is used for making lenses and spectacles is : 1

(A) Borosilicate Glass

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(B) Crooke's Glass

(C) Hard glass

(D) Soda-lime glass

? ? ? ? ? ? ? ? ? ? :

(A) ? ?

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(B) ? ?

(C) ? ?

(D) ? ? ?

3 A force of 125 N acts on a body of weight 25 N. The acceleration produced in the body is (g = 10ms-2) 1

(A) 0.5 ms-2 (B) 5 ms-2

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(C) 50 ms-1 (D) 500 ms-2

25 N ? ? ? ? ? 125 N ? ? ? ? ? ? ? ? ? ? : (g = 10ms-2)

(A) 0.5 ms-2 (B) 5 ms-2

(C) 50 ms-1 (D) 500 ms-2

4 Which of the following is a heterogeneous mixture ? 1

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(A) Tap water (B) Air

(C) Muddy water (D) Brass

? ? ? ? ? ? ? ?

(A) ? ? (B) ?

(C) ? ? (D) ?

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5 Voice of a woman is usually of higher pitch than that of a man. It means that as compared to a man her voice has a : 1

(A) longer wavelength

(B) higher time period

(C) higher frequency

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(D) higher wave-velocity

? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? :

(A) ? ? ? ?

(B) ? ? ?

(C) ? ? ?

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(D) ? ?-? ?

6 Which one among the following is the source of the vitamin which helps in clotting of blood and whose deficiency results in excessive bleeding from wounds ? 1

(A) Green Vegetables (B) Butter

(C) Fish (D) Milk

? ? ? ?-? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?

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(A) ? ? (B) ?

(C) ? (D) ?

7 If the mass of a body is 100 ng, it is the same as : 1

(A) 10-9g (B) 10-8g

(C) 10-7g (D) 10-11g

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? ? ? ? ? 100 ng ?, ? ? ? ? ? ? ? :

(A) 10-9g (B) 10-8g

(C) 10-7g (D) 10-11g

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8 The empirical formula of an organic compound is CH2. Its molecular mass is 56. The molecular formula of the compound is: [At. mass: C = 12.0u, H = 1.0u] 1

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(A) C4H8 (B) CH2

(C) C2H4 (D) C3H6

? ? ? ? ? ? CH2 ? ? ? ? 56 ? ? ? ? ? ? (? ? : C = 12.0u, H = 1.0u)

(A) C4H8 (B) CH2

(C) C2H4 (D) C3H6

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9 A train took 3h 30min to travel between two cities with an average speed of 80 km/h. The distance between the two cities is : 1

(A) 240 km (B) 280 km

(C) 264 km (D) 272 km

80 km/h ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 3 h 30 min ? ? ? ? ? ? ? ? :

(A) 240 km (B) 280 km

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(C) 264 km (D) 272 km

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10 State any two characteristics properties of ionic compounds. 2

? ? ? ? ? ? ? ? ?

11 How does 'DNA finger printing' help in identification of criminals ? 2

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? ? ? ? ? '?.?.?. ? ?' ? ? ? ? ? ?

12 Write the SI unit (in terms of basic units) of work and also its special name and symbol. 2

? ? SI ? (? ? ? ? ?) ? ? ? ? ? ? ? ? ?

13 Write the relations between : 2

(a) initial velocity, u, final velocity v, acceleration, a and the time taken by a body, t.

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(b) initial velocity, u, final velocity v, acceleration a and the distance travelled by a body, s.

? ? ? ? ? :

(a) ? ?, u, ? ?, v, ? ?, ? ? ? ? ? ?, ? ?

(b) ? ?, u, ? ?, v, ? ?, ? ? ? ? ? ? ?, s ?

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14 Where would the element having the following properties be located in a group of the modern periodic table at the top or at the bottom, in each case ? 2

(i) The least ionization energy

(ii) The smallest ionic radius

(iii) The least metallic character

(iv) The least electron affinity

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? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?, ? ? ? ?

(i) ? ? ?

(ii) ? ? ? ?

(iii) ? ? ?

(iv) ? ? ?

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15 A stone is thrown vertically upwards and after sometime it comes back and falls on ground. Draw the speed time graph of its upward and downward journey assuming that it took time 't' during its upward journey. 2

? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? '1' ? ?

16 What was the effect of : 2

(i) Kinetic energy of colliding planetesimals and

(ii) Energy released due to disintegration of radioactive elements on primitive Earth? Name and describe the process that occured as a result of it.

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(i) ? ? ? ? ? ? ?

(ii) ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?

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17 Distinguish between the following : 4

(i) Organ and tissue

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(ii) Protective and conducting tissues in plants.

? ? ? ? :

(i) ? ? ?

(ii) ? ? ? ? ? ?

18 What is a mechanical wave ? Name the two types of mechanical waves. How do they differ from each other ? 4

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? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?

19 Which mirror would you use to project an inverted and magnified image of a candle on the wall of your room and why? Where will you place the candle ? Draw a ray diagram for the formation of the image. 4

? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?-? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?

20 What are allotropes ? Name any two allotropic forms of phosphorus ? What happens when phosphorus reacts with : 4

(a) Concentrated nitric acid

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(b) Caustic soda

Write chemical equations involved.

? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? :

(a) ? ? ?

(b) ? ?

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? ? ? ?

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21 What are different categories of domesticated animals ? Write one example of each category. How animals can help to make the soil fertile ? 4

? ? ? ? ? ?-? ? ? ? ? ?-? ? ? ? ? ? ? ? ? ? ? ? ? ?

22 What is a green house? Which gases have converted earth's atmosphere into a green house ? Explain how is it leading to global warming ? 4

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? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?

23 What are gangue and flux ? Write the reactions involved between 4

(i) A basic gangue and

(ii) An acidic gangue with suitable flux in each case.

? ? ? ? ? ?

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(i) ? ? ?

(ii) ? ? ? ? ? ? ? ? ? ?

24 Which eclipse occurs on a full-moon day? What is the cause of this eclipse ? Explain with the help of a diagram. 4

? ? ? ?-? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?

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25 Draw a labelled diagram of human heart. 4

? ? ? ? ? ? ? ?

26 Four resistors of resistance 10 ohm each are joined in series to form one combination. Four such combinations are then connected in parallel. Calculate the total resistance of there combinations. 4

? 10 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?

27 Write two important differences between communicable and non-communicable diseases giving one example of each and write the cause of each disease. 4

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? ? ?-? ? ? ?, ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?

28 Define : 6

(i) Oxidation

(ii) Reduction and

(iii) Redox reaction.

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Write two examples of redox reactions and identify the oxidizing agent and the reducing agent in each case.

(i) ?

(ii) ? ?

(iii) ? ? ? ? ?

? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?

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29 What is meant by the term energy crisis ? Suggest any four measure to conserve energy. 6

? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?

30 Describe the following life processes in plants: 6

(i) Photosynthesis

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(ii) Transpiration

? ? ? ? ? ? ? ? :

(i) ? ?

(ii) ?

46/OS/1-212_A] 24

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