SEBA HSLC General Science Question Paper 2024
![SEBA Class 10 General Science 2024 Question Paper [HSLC General Science Question Paper 2024]](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgVc5vvY8_VvDO9VdjwZlCBlu_nhh5eDdfePNXxy5LsNrQvggELg17StZEreJ3llCtIlNh-pPIzW1SiiqVDB9gZZbV5z6xlTj6BcTAt8XqMwcqPv9_csniPbnGM3YBFgwFNkTf6EBl6TSrtcMF6btyq02rpy9iPTErG6GXO2HHb-uUB61JfJtrG4uS6S8Ro/s16000-rw/1000341894.webp "SEBA Class 10 General Science 2024 Question Paper [HSLC General Science Question Paper 2024]")
The Assam Board Previous Year Question Paper for HSLC (Class 10) General Science is as follows.
General SCIENCE 2024
SEBA HSLC CLASS 10
SECTION – A
Choose the correct answer:
Addition of aqueous solution of barium chloride to aqueous solution of sodium sulphate results in insoluble barium sulphate and the solution of sodium chloride. Which of the following is the correct balanced chemical equation with state symbols for the above Reaction?
(i) BaCl (aq) + NaSO4 (aq) ⟶ BaSO4 (s) ↓ + NaCl (aq)
(ii) BaCl2 (s) + Na2SO4 (s) ⟶ BaSO4 (s) + NaCl (s)
(iii) BaCl2 (aq) + Na2SO4 (s) ⟶ BaSO4 (aq) + 2NaCl (aq)
(iv) BaCl2 (aq) + Na2SO4 (aq) ⟶ BaSO4 (s) ↓ + 2NaCl (aq)Which of the following does not involve a chemical reaction?
(i) Digestion of food. (ii) Respiration. (iii) Burning of candles. (iv) Melting of candles.Which of the following laws is satisfied by a balanced chemical reaction?
(i) Conservation of momentum. (ii) Conservation of mass. (iii) Conservation of energy. (iv) Conservation of density.Which one of the following is an olfactory indicator?
(i) Litmus. (ii) Turmeric. (iii) Vanilla. (iv) Phenolphthalein.Metal oxides are:
(i) Acidic. (ii) Basic. (iii) Neutral. (iv) None of the above.NaHCO3 and Na2CO3·10H2O are commonly known as _________ and ___________ respectively.
(i) Washing soda, baking soda.
(ii) Baking soda, washing soda.
(iii) Caustic soda, baking soda.
(iv) Baking soda, caustic soda.Consider the following statements regarding tooth decay:
(a) Tooth decay starts at a pH lower than 5.5.
(b) Tooth decay is caused by phosphoric acid which lowers pH.
Which among the following options is correct?
(i) (a) is true and (b) is false.
(ii) (a) is false and (b) is true.
(iii) Both (a) and (b) are true.
(iv) Both (a) and (b) are false.Which of the following metals is the most malleable?
(i) Sodium. (ii) Iron. (iii) Gold. (iv) Copper.If metal A displaces metal B from its solution, then:
(i) A is more reactive than B metal.
(ii) B is more reactive than A metal.
(iii) A and B metals are non–reactive.
(iv) A and B metals are equally reactive.Cinnabar is a sulphide ore of which metal?
(i) Copper. (ii) Mercury. (iii) Aluminium. (iv) Iron.What can be the maximum number of sulphur atoms present in a molecule?
(i) 2 (ii) 4 (iii) 8 (iv) 10The name of a compound containing three carbons and aldehyde as functional group is:
(i) Propene. (ii) Propanol. (iii) Propane. (iv) Propanal.Which of the following statements is true for an oxidising agent?
(i) It gives hydrogen.
(ii) It gives oxygen.
(iii) It takes oxygen.
(iv) None of the above.In the Periodic Table, which of the following properties increase from top to bottom in a group?
(a) Valency. (b) Metallic character. (c) Effective nuclear charge. (d) Atomic radius.
(i) (a) and (b). (ii) (b) and (d). (iii) (c) and (d). (iv) (a) and (d).Element X forms a chloride with the formula XCl2, which is a solid with high melting point. X would most likely be in same group of the Periodic table as:
(i) Na. (ii) Mg. (iii) Al. (iv) Si.A spherical mirror and a thin spherical lens each have a focal length of –15 cm. The mirror and the lens are likely to be:
(i) Both convex. (ii) Both concave. (iii) The mirror is concave and the lens is convex. (iv) The mirror is convex and the lens is concave.A boy is unable to see objects when they are placed 17 cm from his eye but can see objects beyond 40 cm from his eye. This defect can be corrected by using:
(i) Convex lens. (ii) Concave lens. (iii) Bifocal lens. (iv) Contact lens.The image formed by a concave mirror is observed to be virtual, erect and larger than the object. Where should be the position of the object?
(i) Between the principal focus and the centre of curvature.
(ii) At the centre of curvature.
(iii) Beyond the centre of curvature.
(iv) Between the pole of the mirror and its principal focus.In an experiment, the variation of current with the applied voltage for a conducting material is obtained as shown. Which of the following conclusions is/are true about the conductor?
(a) Current increases linearly with the voltage.
(b) Resistance is different for different values of V.
(c) The slope of the graph is the same for every value of V and I.
(i) (a) only. (ii) (a) and (c). (iii) (b) only. (iv) (a) and (b).Which among the following diagrams correctly represents the current–carrying wire and the magnetic field associated with it?
(i) (ii) (iii) (iv)Which of the following correctly describes the magnetic field near a long straight wire?
(i) The field consists of straight lines perpendicular to the wire.
(ii) The field consists of straight lines parallel to the wire.
(iii) The field consists of concentric circles centred on the wire.
(iv) The field consists of radial lines originating from the wire.The human eye forms the image of an object at its:
(i) Iris. (ii) Pupil. (iii) Retina. (iv) Cornea.Why is the colour of the clear sky blue?
(i) Due to reflection of light.
(ii) Due to refraction of light.
(iii) Due to scattering of light.
(iv) Due to atmospheric layers.Which of the following is not derived from the sun’s energy?
(i) Wind energy. (ii) Geothermal energy. (iii) Nuclear energy. (iv) Biomass.1 kWh = _________ Joule.
(i) 3.6 × 105 (ii) 3.6 × 106 (iii) 3.6 × 107 (iv) 3.6 × 108The SI unit of power of lens is:
(i) Joule. (ii) Dioptre. (iii) Ohm. (iv) Ampere.1 eV = __________.
(i) 1.602 × 10–18 J (ii) 1.602 × 10–19 J (iii) 1.601 × 10–17 J (iv) 1.601 × 10–16 JOzone, at the higher levels of the atmosphere, prevents:
(i) Infrared radiations. (ii) Visible light. (iii) UV radiations. (iv) Both (i) and (iii).Which of the following is not a renewable source of energy?
(i) Sun. (ii) Wind. (iii) Fossil fuel. (iv) Water.The source of the formation of coal and petroleum is:
(i) Coliform. (ii) Biomass. (iii) Greenhouse gas. (iv) Ocean water.From the energy flow diagram, it is confirmed that the flow of energy is:
(i) Unidirectional. (ii) Multidirectional. (iii) Upward in air. (iv) Downward in water.An electron enters a magnetic field at right angle to it. The direction of force acting on the electron will be:
(i) To the right. (ii) To the left. (iii) Out of the page. (iv) Into the page.A current of 0.5 A is drawn by a filament of an electric bulb for 10 minutes. The amount of electric charge that flows through the circuit is:
(i) 330 C. (ii) 310 C. (iii) 320 C. (iv) 300 C.Amoeba engulfs food from its surroundings and forms a food vacuole with the help of the _________.
(i) Pseudopodia. (ii) Cilia. (iii) Flagella. (iv) Tentacles.Xylem tissues of the plants are responsible for:
(i) Transportation of water.
(ii) Transportation of food.
(iii) Transportation of amino acids.
(iv) Transportation of oxygen.To drive the reactions, endothermic processes in the cell use:
(i) ADP. (ii) ATP. (iii) AMP. (iv) CO2.The gap between two neurons is called _______.
(i) Dendrite. (ii) Synapse. (iii) Axon. (iv) Impulse.Which of the following hormones promotes cell division in plants?
(i) Cytokinin. (ii) Oestrogen. (iii) Thyroxin. (iv) Insulin.Some of the voluntary actions like walking in a straight line, riding a bicycle, picking up a pencil, etc., are controlled by part of the hindbrain called:
(i) Cerebellum. (ii) Cerebrum. (iii) Pons. (iv) Medulla.Single–celled animals like amoeba reproduce by the process of ________:
(i) Binary fission. (ii) Multiple fission. (iii) Budding. (iv) Fragmentation.The anther contains ___________.
(i) Sepals. (ii) Ovules. (iii) Carpels. (iv) Pollen grains.Which of the following is not a part of the female reproductive system of human beings?
(i) Ovary. (ii) Uterus. (iii) Vas deferens. (iv) Fallopian tube.Find out the analogous organs from the following:
(i) Wing of a bat and wing of a bird.
(ii) Wing of a bat and forearm of a human.
(iii) Forearm of a frog and forearm of a lizard.
(iv) Wing of a bird and forearm of a frog.Who put forward the theory of ‘natural selection’ to give the idea of evolution of species in the 19th century?
(i) Charles Darwin. (ii) Gregor Johann Mendel. (iii) Stanley L. Miller. (iv) Harold C. Urey.In a Mendelian experiment consisting of breeding a tall plant bearing violet flowers with a short pea plant bearing white flowers, the progenies all with violet flowers were obtained. But almost half of them were obtained to be short. This suggests that the genetic makeup of the tall parent can be depicted as:
(i) TTWW. (ii) ttww. (iii) TtWW. (iv) TtWw.
SECTION – B
(a) What do you mean by redox reaction? Find out the oxidation and reduction half–reaction of the following:
(b) Write the formula of quicklime and slaked lime.Write the chemical equation involved in the dissolution of HCl in water. Name the ions formed in this reaction.
What do you mean by allotrope? Write the names of two allotropes of carbon. How do they differ structurally?
What is amalgam? Name the two metals present in bronze. Is bronze an alloy?
What is a thermite reaction? Write the reaction involved in it. Mention one use of it.
What is an effective nuclear charge? How does effective nuclear charge change in group and period in the Periodic table?
A doctor has prescribed a corrective lens of power +1.5 D. Find the focal length of the lens. Is the prescribed lens diverging or converging?
Explain two ways to induce current in a coil.
(a) Give the names of two energy sources that you would consider to be exhaustible. Give reasons for your choices.
Or
(b) What is the role of decomposers in the ecosystem?The near point of a hypermetropic eye is 1 m. What is the power of the lens required to correct this defect? Assume that the near point of the normal eye is 25 cm.
A copper wire has diameter 0.5 mm and resistivity of 1.6 × 10–8 Ωm. What will be the length of this wire to make its resistance 10 Ω?
(a) Explain why the sky appears dark instead of blue to an astronaut.
(b) Explain the Tyndall effect.Suppose three resistors R1 = 5 Ω, R2 = 10 Ω and R3 = 30 Ω are connected to a battery of 12 V in parallel. Calculate (a) the current through each resistor and (b) the total circuit resistance.
Or
An electric heater of resistance 8 Ω draws 15 A from the service mains for 2 hours. Calculate the rate at which heat is developed in the heater.Suggest some approaches towards reduction of consumption of various natural resources.
Where are gastric glands located? What role does the secretion of these glands play during digestion?
Or
Name the numerous finger–like projections present in the inner lining of the small intestine. What is the significance of the presence of these structures in large numbers in that region? How is the absorbed food taken to each of the body cells for obtaining energy?Draw a longitudinal section of a human heart and show with arrow marking the course of the flow of blood through it.
Or
What is translocation? Name the plant tissue that is involved in this process?Draw a nerve cell with proper labelling. How is an electrical impulse created and in which direction does this impulse travel? What function do these impulses perform?
Or
What are plant hormones? Give an example of a plant hormone that promotes growth and the one that inhibits growth?Give two points of differences between binary and multiple fission?
Or
Why is DNA copying an essential part of the process of reproduction?What are fossils? How do fossils help in finding out the route of evolution?
Or
How did Mendel recognize the “dominant” as well as the “recessive” characters in his experiments? Discuss with suitable examples.
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