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Sample Question Paper, Solved, General Instructions:, 1. The Question Paper contains three sections., 2. Section A has 24 questions. Attempt any 20 questions., 3. Section B has 24 questions. Attempt any 20 questions., 4. Section C has 12 questions. Attempt any 10 questions., 5. All questions carry equal marks., 6. There is no negative marking., SECTION-A, Section - A consists of 24 questions. Attempt any 20 questions from this section., The first attempted 20 questions would be evaluated., 1. Choose the balanced equation (s) from the given., Ca(OH)2 + CO, → CACO, + H,0, Fe + CuSO, → FeSO, + Cu, KCIO, → KCI + 20,, Cu + 2HNO3 → Cu(NO3)2 + 2NO2 + H,O, I., II., III., IV., (A) I and II only, (B) I, II, and III only, (C) I, III and IV only, (D) All of these, 2. In a chemical reaction, the substances that take part is called, formed as a result of chemical reaction is called, and the substance that, II, II, (A) Products, (B) Reactants, (C) Mixtures, Reactants, Products, Compounds, Mixtures, (D) Reactants

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Sample Question Papers, 1 The reaction in the given figure is an example of, 53, Test tube, holder, Dry test tube, Lead nitrate, crystals, Burner, (A) Combination Reaction, (C) Double Decomposition Reaction, 4 Which of these equations is/are not balanced ?, L 2Al + 3H,SO4→ Al(SO)3 + 3H2, IL. 2AICI, + 3Ca(OH)2→ 2AI(OH)3 + 3CaCl,, III. 2KCIO, → 2KCI + 30,, IV. Mg + H,0 → Mg(OH)2 + H,, (A) I only, (C) I and III only, 5. Identify X in the given equation : MnO2 + 4HCI→ MnCl, + X + 2H,O, (A) Cl2, (C) Mn(OH)2, 6. Sania found an element X, which reacts with oxygen and forms oxide of X which turns red litmus, solution blue. The element X is a:, (B) Decomposition Reaction, (D) Displacement Reaction, (B) IV only, (D) I, II and III only, ->, (B) O2, (D) 2C12, (B) Metal, (D) Alloy, (A) Non-Metal, (C) Mixture, 7. Choose the incorrect statement?, (A) Aluminium when heated in air form aluminium oxide., (B) Sodium metal reacts vigorously with acid to produce sodium chloride and hydrogen gas., (C) Magnesium reacts with hot water to form magnesium hydroxide and hydrogen., (D) Copper reacts with any form of water to form metal hydroxide., 8. Choose the incorrect statement about aqua-regia?, (A) It is a mixture of one part of concentrated nitric acid and three parts of concentrated hydrochloric, acid., (B) It is a mixture of one part of dilute nitric acid and three parts of concentrated sulphuric acid., (C) It can dissolve all metals., (D) Its meaning in Latin is royal water., 9. There are five metals given: Zn, Sn, Ag, Na, Ca. Arrange the given metals from least reactive to most, reactive., (A) Sn<Na<Zn<Ca<Ag, (C) Ag<Sn<Zn<Ca<Na, 10. The compound which dissolves in water to give a solution with a pH greater than 7 is:, (B) Ag<Zn<Sn<Na<Ca, (D) Zn<Sn<Ag<Ca<Na, (B) Copper (II) Hydroxide, (D) Sulphur Dioxide, (A) Calcium Carbonate, (C) Sodium Hydroxide, 1. Which cell organelles contain the light- absorbing green pigment?, (A) Mitochondria, (C) Chloroplast, (B) Ribosomes, (D) Nucleolus

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OSWAAL CBSE Sample Question Papers Term-I, SCIENCE, Class-, 54, 12. Which one of the following is not present in the gastric juice secreted by stomach?, (A) Pepsin, (C) Mucus, 13. Gas 'P diffuses from a capillary into an alveolus in the lungs. The gas 'P expelled out from the a, during:, (B) Renin, (D) Bile, alvelous, blood, capillary, (A) Inhalation, (C) Respiration, 14. Based on the given information, X, Y and Z are :, X- It transports blood to the heart., Y- It connects the arteries and veins., (B) Exhalation, (D) Inspiration, Z- It transports blood away from the heart., Y., (A), Capillaries, Veins, Arteries, (B), Arteries, Veins, Capillaries, (C), Veins, Capillaries, Arteries, (D), Capillaries, Arteries, Veins, 15. Choose the correct statement about translocation., (A) It is the continuous evaporation of water from the cells of a leaf., (B) It transports food from the leaves., (C) It binds carbon monoxide with haemoglobin., (D) It diffuses carbon dioxide into the blood., 16. The correct sequence of the processes taking place in nutrition in animals is :, (A) Ingestion, Assimilation, Digestion, Absorption, Egestion, (B) Assimilation, Absorption, Ingestion, Digestion, Egestion, (C) Ingestion, Digestion, Absorption, Assimilation, Egestion, (D) Ingestion, Digestion, Assimilation, Absorption, Egestion, 17. Choose the incorrect statement., (A) In primary rainbow, red colour is formed on the outside and violet colour on the inside., (B) A normal human eye cannot clearly see all the objects at the different distances., IO A beam of white light gives a spectrum on passing through a hollow prism., (D) Light rays of different colour travel with the same speed in vacuum and air., 18. If white light is incident on prism X then, White light

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Sample Question Papers, 55, The ray of light which emerges out of the prism Y will be white light., II. The refraction produced by the prism Y is equal and opposite to that produced by prism X., Choose the correct statement (s)., 1., (A) Only I, (C) Both I and II, 19. What will be the colour of an object, which can absorb all the seven colours but does not reflect even, one?, (B) Only II, (D) None of these, (A) White, (C) Violet, 20. The path of light beam becomes visible when a fine beam of sunlight enters a smoke filled room, through a hole. It is because of:, (A) Reflection, (C) Atmospheric Refraction, 21. If the earth had no atmosphere, the sky would appear, (A) Colourless, (C) Blue, 22. A red colour flower appears red because:, (A) It absorbs red colour., (C) It absorbs and refracts red colour., 23. Choose the correct option., (B) Black, (D) Red, (B) Refraction, (D) Scattering Effect, in colour., (B) White, (D) Black, (B) It allows red colour to pass through., (D) It reflects red colour., Column-I, Column-II, a. Tyndall effect, b. A microscope, Rainbow formation, (i) Reflection of light, (ii) Refraction of light, (iii) Scattering of light, (iv) Dispersion of light, C., d. Appearance of star position, b., (A) (iii), (B) (i), (C) (i), (D) (iv), 24. Given, the optical densities of four optical media P, Q, R and S., P = 1.35, (i), (iii), (iii), (i), (iv), (ii), (iv), (iii), (ii), (iv), (i), (ii), Q = 1.21, R= 1.58, S = 1.002, The light will travel fastest in, because its optical density is, II, (A) P, (B) Q, Highest than all, More than S, Less than P, (C) R, (D) S, Lesser than all, SECTION-B, Section - B consists of 24 questions (Sl. No. 25 to 48). Attempt any 20 questions from this section., The first attempted 20 questions would be evaluated., 25. Shyam heated a small amount of light green colored compound X in a test tube. He found that the, compound losed some water and then gas Z with suffocating smell comes out. The vapors of gas are, collected and dissolved in water. The solution turns blue litmus red. The residue Y left in the test tube, turns reddish brown.

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OSWAAL CBSE Sample Question Papers Term-I, SCIENCE, Class-X, 28. The given experimental set up is used to test a few solutions which contain hydrogen but are not categoria, 56, Reddish brown, residue, (Suffocating gas), (Light green), compound, Identify X,Y and Z, Y, (A) PbSO, FeSO,7H,0, (C) Na,SO 10H,0, (D) Pb(NO3),, 26. Choose the correct option., Pb,O3, Fe,Og, Na,SO4, PbO2, SO, SO3, SO, NO, N20,, (B), (ii), CuO, • Cu, H20, H2, (iv), (1), (iii), (A) (i)- oxidation, (iii) – reduction, (B) (i)- reduction, (iii)- oxidation, (C) (1)- reducing agent, (iv)- oxidizing agent, (D) (1) – undergoes reduction (iv)- undergoes reduction, 27. Study the given experimental set-up carefully. Based on the diagram, Choose the correct observation(s)?, Test tube, holder, Dry test tube, Lead nitrate, crystals, Burner, (A) A double decomposition reaction takes place., (B) Brown fumes of NO, are evolved., (C) Red residue is left behind in the test tube., (D) All of these, as acids., Battery, Bulb, Switch, Beaker, Iron nail, Rubber cork, Solution of sample in water, Which of these observation is incorrect?, (A) When a solution of glucose put the bulb does not glow., is