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NtseBookCorner Join us On Telegram., , , , femen mais Tae SCIENCE, , CBSE, Sample Question Papers, , Sample Question Paper, , , , , , Solved, , , , General Instructions :, , The Question Paper contains three sections., Section A has 24 questions. Attempt any 20 questions., Section B has 24 questions. Attempt any 20 questions., Section C has 12 questions. Attempt any 10 questions., All questions carry equal marks., , There is no negative marking., , a a, , , , SECTION-A, , Section - A consists of 24 questions. Attempt any 20 questions from this section., , The first attempted 20 questions would be evaluated., 1. Plaster of Paris is, , (A) (CaSO,). 4 H,O (B) CaSO,.2H,O, (©) CaSO,.H,0 (D) Caso,, 2. Which of the following statements is correct about water of crystallization?, , , , , (A) Crystals of salts obtain their shape., (B) Crystals of salts obtain their colour., (C) Crystals of salts form a part of crystal structure., (D) All of the above, 3. The gas which is passed through dry slaked lime'to produce bleaching powder is:, , , , , , (A) H, (B) O,, © a, (0) N,, 4. Amilk man adds a very small amount of baking soda to fresh milk:, (A) To increase the rate of fermentation (B) To decrease the rate of fermentation, (C) To increase its quality (D) To make paneer, , . The compound which dissolves in water to give a solution with a pH greater than 7 is:, (A) Calcium Carbonate (B) Copper (Il) Hydroxide, (©) Sodium Hydroxide (D) Sulphur Dioxide
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Sample Question Papers 75, , 6., , 10., , i., , Which of these is an amphoteric oxide?, (A) Al,O, (B) P.O,, (C) N,O (D) Fe,0., , , , . Which pair of compounds is not ionic?, , (A) KCland HC, , , , (B) CCl, and CH,, , (©) CCl, and NaCl (D) KCland CCl,, . The element that liberate H, gas on reacting with diluted nitric acid is, (A) Zn and Mg (B) Mn and Sn, , (C) Mg and Mn (D) Mn and Fe, , . Shipra observed the rate of evolution of hydrogen gas with five metals P, Q, R, S and T at room, , temperature., , Bubbles of —fiii##:4—dil, hydrogen gas POE:, , , , Metal P Metal Metal R, Metal P HCI tal Q, , HCI-BH] gy, HCI-FHEE, , , Metal $ Metal T, , Based on above observation, the metals P,Q, R, S and T are:, , Ie | o8fce [is |r, , [@)| zn | al | Mg | cu Fe, , [@) [mg [al | zn | Fe | Cu, , L@ | at | zn |g | Fe | cu, , (D) | F cu Mg | Al Cu ], Although nitrogen is the most abundant gas in the atmosphere, it does not combustion’. Identify the, correct reason for this statement., , (A) Nitrogen is a reactive gas, (B) Nitrogen is an inert gas, , , , (©) Nitrogen is an explosive gas, (D) Only hydrocarbons can take part in combustion, Which of the following statements about the autotrophs is incorrect?, , (A) They synthesise carbohydrates from carbon dioxide and water in the presence of sunlight and, chlorophyll., , (B) They store carbohydrates in the form of starch., (C) They convert carbon dioxide and Water into carbohydrates in the absence of sunlight, (D) They constitute the first trophic level in food chains, , . Which of the following completes the given equation? Glucose + Oxygen — (?), , (A) Only carbon dioxide + water + energy (B) Only carbon dioxide + water, (©) Only carbon dioxide (D) Only water + energy, , . The inner lining of stomach is protected by one of the following from hydrochloric acid. Choose the, , correct one., (A) Pepsin (B) Mucus, (C) Salivary amylase (D) Bile
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76, 4., , 5., , 16., , 17., , 18., , 19., , 20., , XN, , OSWAAL CBSE Sample Question Papers Term-|, SCIENCE, Class - X, . During deficiency of oxygen in tissues of human beings, pyruvic acid is converted into lactic acid in the, (A) Cytoplasm (B) Chloroplast, (©) Mitochondria (D) Golgi body, . What prevents back flow of blood inside the heart during contraction?, (A) Valves in heart (B) Thick muscular walls of ventricles, (C) Thin walls of atria (D) All of the above, , Match the words of Column (A) with that of Column (B), S..No.| Column (A) | Column (B), A__| Phloem () | Excretion, , , , , , , , , , , , , B__| Nephron (ii)_| Translocation of food, C_| Veins ‘Gii)_| Clotting of blood, D_| Platelets [ivy [Deoxygenated blood _|, (A) A- (i, B- (i), C- (iv), D- Git (B) A- (ii), B - (i), C- (i), D- Gv), , (©) A- (iv), B - (iii), C - (i), D- (i) (D) A - (i), B- (iv), C- (ii), D- (iv), In which of these cases, a real image, equal in size to the object, is obtained?, , (A) When an object is placed at the centre of curvature in front of a concave mirror., (B) When an object is placed at the centre of curvature in front of a plane mirror., (C) When an object is placed at the centre of curvature in front of a convex mirror, (D) None of these, , Choose the incorrect statement., , (A) A concave mirror can give a virtual image, , (B) A convex mirror can give a virtual image, , (©) Aconvex lens can give a virtual image, , (D) All of these, , Upon which of these factors the amount of light reflected depends?, , (A) Nature of material of the object (B) Nature of the surface, , (C) Smoothness of the surface (D) All of these, , In order to get a diminished and virtual image, the object can be placed anywhere in front of a, (A) Concave mirror (B) Plane mirror, , (C) Convex mirror (D) None of these, , . Which of the following correctly represents the incident ray, the refracted ray and the emergent ray in, the given glass slab?, P,, , , , , , Incident ray Refracted ray Emergent ray, (A) PQ QR RS, (B) PQ RS QR, (©) RS QR PQ, , (D) RS PQ QR
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Sample Question Papers 77, , 22. When an object of size 1 cm is placed at a distance of 15 cm from a concave mirror of focal length 10 cm,, the position, nature and size of the image formed will be, (A) On the left side, 30 cm, real, inverted and magnified, (B) On the left side, 20 cm, virtual, upright and diminished, (C) On the right side, 30 cm, real, inverted and magnified, (D) On the right side, 20 cm, virtual, upright and diminished, , 23. Which of these options is correct in case of concave mirror?, , Object position Image position Image size Nature of image, (A) AtC AtC Equal to object Real and inverted, (B) Beyond C Between F and C Diminished Virtual and erect, (C) Between F and C At infinity Enlarged Real and inverted, (D) AtF Atinfinity Highly diminished Virtual and erect, , 24. Choose the correct statement regarding the propagation of light of different colours of white light in, , air?, , (A) Red light moves fastest, , (B) Blue light moves faster than green light, , (C) All the colours of the white light move with the same speed, , (D) Yellow light moves with the mean speed as that of the red and the violet light, , SECTION-B, , ists of 24 questions (SI. No. 25 to 48). Attempt any 20 questions from this section., The first attempted 20 questions would be evaluated., , Section - B co:, , , , 25. Identify “a” and “b” on the given equation, aFe + bH,O + Fe,O, + H,, , (A) ais3and bis 4 (B) ais 4and bis3, , (©) ais 2and bis 5. (D) ais3.and bis5, 26. Choose odd one out, , (A) Carbon + Oxygen — Carbon dioxide, , (B) Hydrogen + Chlorine > Hydrogen chloride, , (C) Glucose -> Carbon dioxide + Water, , (D) Sulphur + Oxygen — Sulphur dioxide, , 8, 8, , . Which of the following are combination reactions?, (i) 2KCIO, > 2KCl + 30,, (ii) MgO + H,O-> Mg(OH),, (iii) 4A1 + 30, 2A1,0,, , , , (iv) Zn + FeSO, ZnSO, + Fe, (A) (i) and (iii) (B) (iii) and (iv), (©) (ii) and (iv) (D) (ii) and (iii), , 28. During the preparation of hydrogen chloride gas on a humid day, the gas is usually passed through, the guard tube containing calcium chloride. The role of calcium chloride taken in the guard tube, isto, (A) Absorb the evolved gas. (B) Moisten the gas., , (c) Absorb moisture from the gas. (D) Absorb Cl ions from the evolved gas.
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78, , 8, , 30., , (A), (B), ©, (D), 31., , 33., , 3., , 35., , 36., , OSWAAL CBSE Sample Question Papers Term-|, SCIENCE, Class - X, , . Which of the following statements is not correct?, , (A) All metal carbonates react with acid to give a salt, water and carbon dioxide, , (B) All metal oxides react with water to give salt and acid, , (C) Some metals react with acids to give salt and hydrogen, , (D) Some non-metal oxides react with water to form an acid, , Which of the following statements is true for acids?, , (A) Bitter and change red litmus to blue (B) Sour and change red litmus to blue, (C) Sour and change blue litmus to red (D) Bitter and change blue litmus to red, Directions: Q.No. 31 to 34 consist of two statements. Assertion (A) and Reason (R). Answer these, questions selecting the appropriate option given below, , Both A and R are true and R is the correct explanation of A., , Both A and R are true but R is NOT the correct explanation of A., , Ais true but R is false., , Ais false and R is true., , Assertion (A): When copper (II) oxide is heated with hydrogen, the copper metal and water are formed, This type of reaction is redox reaction., , CuO + H, > Cu+ H,0, Reason (R): In the given reaction H, is oxidised to H,O and CuO is reduced to Cu., , Assertion (A): Hydrogen is a metal and has been assigned a place in the reactivity series of metals., Reason (R): It has tendency to lose electron and forms a positive ion H~, , Asse, , , , tion (A): Valves are present in the arteries., Reason (R): Arteries carry oxygenated blood from heart to different body parts except pulmonary, artery, , , , Assertion (A): Sun is visible 2 min before actual sunrise and 2 min after sunset, Reason (R): It is because of atmospheric refraction., , Aluminium is used for making cooking utensils. Which of the following properties of aluminium are, responsible for the same?, , (i) Good thermal conductivity, (ii) Good electrical conductivity, (iii) Ductility, , (iv) High melting point, , (A) (i) and (ii) (B) (i) and (iii), , (C) (ii) and (iii) (D) (i) and (iy), , Which of the following oxide(s) of iron would be obtained on prolonged reaction of iron with steam?, (A) FeO (B) Fe,O;, , (©) Fe,0, (D) Fe,O, and Fe,O,, , . The given experimental set up shows that :, , , , {|, , lack paper, , , , , , , , (A) Respiration takes place in leaves., (B) Transpiration takes place in leaves
