Secondary Education Examination (SEE)
Science and Technology
2081 (2025) · Madhesh · English medium
ℹ️ Give the answers in your own creative style based on the given instructions. Figures in the margin indicate the full marks. Attempt all the questions.
Section 'A' — Multiple Choice Questions
Choose the best alternative and write in the answer sheet. (10×1=10)
- 1
a)In which of the following activity uses digital signal?1
aspeaking through a loudspeakerbface to face chatting togethercchatting in internetdwatching antenna TVb)Which of the following plant belongs to the division algae?1
aPeabMosscSpirogyradCycasc)Which of the following kingdoms have cell wall in cells?1
aMonera, Fungi, AnimaliabPlantae, Protista, AnimaliacFungi, Plantae, AnimaliadFungi, Plantae, Monerad)Now a days, agricultural production has been affected by low rainfall at times and heavy rainfall at other times. Which of the following is the main reason for this?1
avolcanic eruptionbflood and landslidecclimate changeddecrease in endangered animalse)If the mass and radius of heavenly object are four times greater than that of the earth, what is the value of acceleration due to gravity of that object?1
a1.22 m/s²b2.45 m/s²c4.9 m/s²d9.8 m/s²f)When aluminium foil is placed on water in a beaker, it floats. When the same piece of foil is squeezed into a spherical shape, it sinks. What could be the reason for this?1
aThe surface area decreases, upthrust decreases and sinkbWeight increases and sinkscSurface area increases and sinksdDensity of foil increases and sinksg)In the process of formation of rainbow, which of the following is the correct order of speed of light? The speed of green, violet and red coloured ray of light is represented by V₁, V₂ and V₃ respectively.1
aV₁ > V₂ > V₃bV₁ > V₂ < V₃cV₁ < V₃ < V₂dV₁ > V₃ > V₂h)Under what condition can close-universe be hypothesized?1
aWhen average density is greater than the critical densitybWhen average density is less than the critical densitycWhen average density and critical density are equaldWhen average density and critical density are not comparablei)Which of the following is the effect of heat to the rate of chemical reaction?1
aThe kinetic energy of particles increases when heat increases and particles come in contact fasterbThe chemical reactivity decreases when heat increasescThere is no relationship between heat and chemical reactivitydRate of chemical reaction increases because of the concentrating of matter increases when heat increasesj)A statement and two arguments are given below. Statement: Detergent is called a soapless soap. Argument 1: It has cleaning properties like soap but chemical properties are different. Argument 2: Soap does not cause chemical pollution but detergent does.1
aStatement and argument 1 are correct but argument 2 is incorrectbStatement and argument 1 are incorrect but argument 2 is correctcStatement and argument 2 are incorrect but argument 1 is correctdStatement and argument 2 are correct but argument 1 is incorrect
Section 'B'
Write very short answers to the following questions. (9×1=9)
- 2
a)What is a dependent variable in a process of throwing a stone with a stretched rubber band?1
b)Define one Pascal pressure.1
c)Draw a diagram that shows refraction of light.1
d)According to Hubble's law, on what factor does the speed of star depend?1
e)Complete the given ray diagram.1
f)Write a difference between roasting and calcination.1
g)Arrange the metals sodium, aluminium and magnesium in ascending order of their reactivity.1
h)Write an application of a given hydrocarbon in daily life.1
i)Draw a graph to show the relationship of alternating current and time.1
Section 'C'
Write short answers to the following questions. (14×2=28)
- 3
Prove that, fundamental units of power is kgm²/s³.2
- 4
Write any two main features of aves.2
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