SEBA HSLC General Science Question Paper 2023
![SEBA Class 10 General Science 2023 Question Paper [HSLC General Science Question Paper 2023]](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi8ySTw8FCpTRHxKbcaLpTnccaFWLVYVnvJKKQEk2g-efEZBCpjpV_rca5_yBBt0-WL-STln7pue6fNEduM0VvfZ4o5omsQMfCFH7WQNvrFmYNxQZSMom6N1lPMs_MpUU-EqPcY_jaCZImMU48A1dsMllPbXdcnzaJlh0zbSOyzj-r3NUpEib4kYgaI5BD0/s16000-rw/1000341894.webp "SEBA Class 10 General Science 2023 Question Paper [HSLC General Science Question Paper 2023]")
The Assam Board Previous Year Question Paper for HSLC (Class 10) General Science is as follows.
SCIENCE
2023
SCIENCE OLD PAPER
SECTION – A
Choose the correct answer:
(i) Which of the following is not an example of metalloid?
(a) Si
(b) Ge
(c) B
(d) Al
(ii) Which of the following compound is used in soda–acid fire extinguisher?
(a) NaCl
(b) Na₂CO₃
(c) NaHCO₃
(d) NH₄Cl
(iii) Decomposition of vegetable matters into compost is an example of which of the following class of reaction?
(a) Endothermic reaction
(b) Exothermic reaction
(c) Both
(d) None of the above
(iv) When electric current is passed through the coil of a solenoid, then the magnetic field –
(a) increases along the direction of current
(b) decreases along the direction of current
(c) remains the same at all times
(d) becomes zero
(v) Which of the following is used to measure the potential difference of a circuit?
(a) Ammeter
(b) Voltmeter
(c) Galvanometer
(d) Multimeter
(vi) Which of the following is a conventional source of energy?
(a) Wind energy
(b) Nuclear energy
(c) Geo-thermal energy
(d) Wave energy
(vii) Which of the following can deplete Ozone layer?
(a) Chlorofluorocarbon
(b) Nitrogen
(c) Hydrogen
(d) Oxygen
(viii) Which of the following constitute a food chain?
(a) Grass, Wheat and Mango
(b) Grass, Goat and Human
(c) Goat, Cow and Elephant
(d) Grass, Fish and Goat
(ix) Which of the following is responsible for change in the curvature of eye lenses?
(a) Retina
(b) Iris
(c) Ciliary muscles
(d) Optic nerve
(x) The focal length of a lens is 1 metre. Its power is –
(a) 0.5 D
(b) 1 D
(c) 1.5 D
(d) 2 D
2. Choose the correct answer of the following:
(i) Image formed by a concave mirror is –
(a) real and diminished
(b) real and enlarged
(c) virtual and enlarged
(d) virtual and diminished
(ii) If the refractive index of glass is 1.5, then speed of light in glass is –
(a) 2 × 10⁸ m/s
(b) 3 × 10⁵ m/s
(c) 2.25 × 10⁸ m/s
(d) 3 × 10⁸ m/s
(iii) Breakdown of glucose into pyruvate takes place in the –
(a) Cell cytoplasm
(b) Mitochondria
(c) Cell membrane
(d) Golgi body
(iv) The energy currency for most of the cellular processes is –
(a) ADP
(b) AMP
(c) ATP
(d) CO₂
(v) The gap between the two neurons is called a –
(a) dendrite
(b) synapse
(c) axon
(d) nerve ending
(vi) Which of the following is a plant hormone?
(a) Insulin
(b) Thyroxin
(c) Oestrogen
(d) Cytokinin
(vii) The process of giving rise to new individual organisms from the body parts of many fully differentiated organisms is known as –
(a) Regeneration
(b) Budding
(c) Fragmentation
(d) Fission
(viii) Binary fission occurs in –
(a) Amoeba
(b) Paramoecium
(c) Planaria
(d) All of these
(ix) An example of homologous organs are –
(a) wings of a bird and a bat
(b) wings of a butterfly and a bat
(c) wings of a pigeon and hands of man
(d) wings of a parrot and a honey bee
(x) Which of the following chromosome sets will determine the male sex in human infant?
(a) XX
(b) XY
(c) XO
(d) YO
3. Fill in the gaps:
(i) The hydrocarbon which is the major component of Compressed Natural Gas (CNG) is _______.
(ii) The product ‘X’ of the following reaction is _______:
3Fe(s) + 4H₂O(g) → X + 4H₂(g)
(iii) When iron is mixed with nickel and chromium, we get an alloy named _______.
(iv) The process by which some organisms fulfil their carbon and energy requirements and yields their stored form of energy is _______.
(v) _______ and _______ are the reproductive parts of a flower which contain the germ–cells.
(vi) A feedback mechanism regulates the action of the _______.
(vii) The _______ mirror is used as rear view in vehicles.
(viii) In electric generator, energy converted from _______ energy to _______ energy.
(ix) The 3rd trophic level of a food chain is _______.
(x) When combustion takes place in insufficient air _______ gas produces.
4 Answer in very short:
(i) Among K, Na, Ca and Mg, which one is the least reactive metal?
(ii) On heating gypsum at 373 K, it loses water molecule and produces a white powder. What is the chemical formula of the white powder?
(iii) Write the thermite reaction.
(iv) Sodium react violently with cold water and immediately catches fire due to the liberation of a particular gas. Identify the gas.
(v) What is the least distance of distinct vision of normal eye?
(vi) State the S.I. unit of electric charge.
(vii) Who first discovered that moving magnet can generate electric current in a coil?
(viii) What is the approximate percentage of methane in Bio-gas?
(ix) What will happen if a person consumes iodine deficient food?
(x) How would you define a ‘gene’?
5 Determine true or false:
(i) In modern periodic table, elements are arranged in 18 vertical columns and 7 horizontal rows.
(ii) Precipitation reactions produce insoluble salts.
(iii) Non-metals can displace hydrogen from dilute acids.
(iv) Coliform is a group of bacteria, found in human brain.
(v) Roots, stems and leaves of some plants develop into new plants through vegetative propagation.
SECTION – B
Write one method for the preparation of bleaching powder. Write two uses of it.
Find the Product of the following reactions:
(a) CaCO₃ + H₂O(l) + CO₂(g) →
(b) Na₂CO₃ + 10H₂O →How metallic character of elements changes across periods and groups of periodic table. Explain.
(a) Reaction between ethanoic acid and sodium carbonate produces a salt, CO₂ and water. What is the salt?
(b) Find ‘X’.Draw the ray diagram for the image formation by a convex lens, when object is placed at centre of curvature.
Decomposition of 2 g of ferrous sulphate crystals when heated generated 1 g solid oxide and two different gases. Identify the solid oxide and both the gases by writing proper chemical reaction.
What do you mean by Corrosion and Rancidity? Explain with examples.
Write four properties of magnetic lines of force.
Write two disadvantages of fossil fuels.
State any two methods in reducing the problem of waste disposal.
Why should we conserve forests and wildlife?
What is meant by power of accommodation of the eye?
State two factors on which the resistance of a conductor depends.
An electric motor takes 5 A from a 220 V line. Determine the power of the motor and the energy consumed in 2 hours.
What is Blood pressure? What are systolic and diastolic pressures? What should be the normal systolic as well as diastolic pressure values of a normal person?
OR
What is lymph? How does it differ from plasma? What are their functions?What is a neuromuscular junction? How does a nerve impulse travel from one part to the others of the body?
OR
Draw a neat labelled diagram of a nerve cell and state its function.Give the differences between binary fission and multiple fission.
OR
State the advantages in plants raised through vegetative propagation.What factors could lead to the rise of a new species?
OR
If both parents as well as the children are found to possess light eye colour then, according to you the light eye colour trait is of dominant or recessive nature?(a) Comment on the electrical conductivity of ionic compounds in solid and molten states.
(b) How Electrolytic reduction is used for the extraction of metals?An object of size 7 cm is placed at 27 cm in front of a concave mirror of focal length 18 cm. At what distance from the mirror should a screen be placed, so that a sharp focussed image can be obtained? Find the size and the nature of the image.
What is the full form of ‘ATP’? Why is it called as the ‘energy currency’ for most of the cellular processes? How do ‘ATP’ molecules produced? What is an ‘Endothermic process’? How do ‘ATP’ molecules used to drive these processes?
OR
What are the methods of excretion used by the plants to get rid of the excretory materials?
Benefits of Solving SEBA HSLC General Science Question Paper 2023 PDFs
Helps students understand the exam pattern and marking scheme
Provides clarity on the types of questions asked in the board exam
Improves time management skills during the final board exam
Builds confidence by practicing actual previous year questions
Assists in identifying important topics and repeated questions
Enhances overall exam preparation and reduces last-minute stress
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