10th Science Past Paper PDF 2025

dsoy vH;kl gsrq uewuk ç'u i= gkbZLdwy ijh{kk & 2025 fo"k; & foKku (Hindi & English Version) Total Questions Total Printed Time (Hours) Maximum Marks...

dsoy vH;kl gsrq uewuk ç'u i= gkbZLdwy ijh{kk & 2025 fo"k; & foKku (Hindi & English Version) Total Questions Total Printed Time (Hours) Maximum Marks Pages 23 09 03:00 Hr. 75 funsZ'k %& ¼1½ lHkh ç'u vfuok;Z gSaA ¼2½ tgk¡ Hkh vko';d gks] lkQ vkSj yscy okyh js[kkfp= cuk,aA ¼3½ çR;sd ç'u ds fy, vkoafVr vad n'kkZ, x, gSaA ¼4½ ç'u la[;k 1 ls 5 oLrqfu"B çdkj ds ç'u gSaA dqy vad 30 gSa ¼5½ ç'u la[;k 06 ls 17 rd çR;sd ç'u 2 vad dk gS ¼'kCn lhek 30 'kCn½A ¼6½ ç'u la[;k 18 ls 20 rd çR;sd ç'u 3 vad dk gS ¼'kCn lhek 75 'kCn½A ¼7½ ç'u la[;k 21 ls 23 rd çR;sd ç'u 4 vad dk gS ¼'kCn lhek 120 'kCn½ ¼8½ ç'u Øekad 6 ls 23 esa vkarfjd fodYi fn, x, gSaA Instructions: - (i) All questions are compulsory. (ii) Draw neat and labeled line diagram, wherever necessary. (iii) Marks allotted to all questions are indicated. (iv) Question number 1 to 5 are objective type questions. Total marks 30 (v) Question no. 06 to 17 each question carries 2 marks (word limit 30 words) (vi) Question no. 18 to 20 each question carries 3 marks (word limit 75 words) (vii) Question no. 21 to 23 each question carries 4 marks (word limit 120 words) (viii) Internal options are given in question numbers 6 to 23. 1- oLrqfu"B ç'u (1X6=6) 1- dSfY'k;e v‚DlkbM dk ty ds lkFk vfHkfØ;k fdl çdkj dh vfHkfØ;k gS a) Å"ek'kks"kh vfHkfØ;k b) jsM‚Dl vfHkfØ;k c) mnklhuhdj.k vfHkfØ;k d) Å"ek{ksih vfHkfØ;k 2- çksisu ¼C₃H₈½ ds v‚Dlhtu esa ngu ds fy, larqfyr lehdj.k gS a) C₃H₈ + 5O₂ → 3CO₂ + 4H₂O b) C₃H₈ + 3O₂ → 3CO₂ + 3H₂O c) C₃H₈ + 4O₂ → 3CO₂ + 4H₂O d) C₃H₈ + 2O₂ → 3CO₂ + 2H₂O 1 3- fo|qr pqEcd dk dksj cukus ds fy, fuEufyf[kr esa ls dkSu lh lkexzh lcls mi;qä gS& a) rkack b½ ,Y;qfefu;e c½ yksgk d½ IykfLVd 4- mnklhurk vfHkfØ;k es]a vEy ,d {kkj ds lkFk vfHkfØ;k djds mRikn cukrk gS% aa½ yo.k vkSj ty b½ dsoy ty c½ dsoy yo.k d½ gkbMªkstu xSl 5- fo|qr ÅtkZ dks ;kaf=d ÅtkZ esa ifjoÆrr djus okyk midj.k gS aa½ ,ehVj b½ tujsVj c½ eksVj d½ xSycSuksehVj 6- fdlh ekè;e dk viorZukad fuHkZj djrk gS%- a½ çdk'k dh rjaxnSè;Z ij b½ ekè;e dh ?kuRo ij c½ vko`fÙk d½ fuokZr Choose and write the correct alternative :- (i) What type of reaction is the reaction of calcium Oxide with water a) Endothermic reaction b) Redox reaction c) Neutralization reaction d) Exothermic reaction (ii) The balanced equation for the combustion of propane (C₃H₈) in oxygen a) C₃H₈ + 5O₂ → 3CO₂ + 4H₂O b) C₃H₈ + 3O₂ → 3CO₂ + 3H₂O c) C₃H₈ + 4O₂ → 3CO₂ + 4H₂O d) C₃H₈ + 2O₂ → 3CO₂ + 2H₂O (iii) Which of the following materials is most suitable for making the core of an electromagnet a) Copper b) Aluminium c) Iron d) Plastic (iv) In a neutralization reaction, acid reacts with a base to form product: a) Salt and water b) Water only c) Salt only d) Hydrogen gas (v) The device used to convert electrical energy into mechanical energy: - a) Ammeter b) Generator c) Motor d) Galvanometer 2 (vi) The refractive index of a medium depends on:- a) Wavelength of light b) Density of the medium c) Frequency d) Vaccum 2 fjä LFkku dh iwÆr dhft, :- (1X6=6) (i) &&&&&&&&&&fØ;kvksa dks esMqyk }kjk fu;af=r fd;k tkrk gSA (ii) nkfgus gkFk ds vaxwBs ds fu;e ds vuqlkj] ;fn vaxwBk /kkjk dh fn'kk esa bafxr djrk gS] rks maxfy;ka &&&&&dh fn'kk esa eqM+rh gSaA (iii) eNfy;ksa ds ân; esa dsoy &&&&&&&&&& d{k gksrs gSaA (iv) vk¡[k dk og Hkkx tks bls jax çnku djrk gS&&&&&&&&&& gSA (v) &&&&&&&&&& esa ÅtkZ dk çokg ,d fn'kk esa agksrk gSA (vi) tc dksà vEy èkkrq ds lkFk vfHkfØ;k djrk gS rks&&&& xSl mRiUu gksrh gSA Fill in the Blanks :- (i) __________actions are controlled by medulla. (ii) According to the right-hand-thumb rule, if the thumb points in the direction of the current, the fingers curl in the direction of the______________. (iii) Fishes have only __________chambers in their heart. (iv) The part of the eye that provides colour to it is __________. (v) In_________the flow of energy is unidirectional. (vi) When an acid reacts with a metal, __________ gas is evolved. 3- fuEufyf[kr dFkuksa ds fy, lgh@xyr fyf[k, :- (1X6=6) (i) çfrorÊ fØ;k esa 'kkfey vax es#jTtq, eksVj, U;wj‚u vkSj efLr"d gSaA (ii) vEyksa dk pH eku 7 ls vfèkd gksrk gSA (iii) fdlh jklk;fud vfHkfØ;k esa mRiknksa dk æO;eku ges'kk vfHkdkjdksa ds æO;eku ds cjkcj gksrk gSA (iv) çdk'k ds ,d ekè;e ls nwljs ekè;e esa leku xfr ls ;k=k djus ij viorZu gksrk gSA (v) lHkh èkkrq,¡ yphyh gksrh gSa vkSj bUgsa [kÈpdj rkj cuk;k tk ldrk gSA (vi) ekuo vk¡[k ds jsfVuk esa –f"V ds fy, j‚M vkSj dksu dksf'kdk,¡ gksrh gSaA 3  Write true /false for the following statements :- (i) The organs involved in reflex action are spinal cord, motor neuron and brain (ii) Acids have a pH value greater than 7 (iii) In a chemical reaction, the mass of the products is always equal to the mass of the reactants. (iv) Refraction occurs when light travels from one medium to another at the same speed. (v) All metals are ductile and can be drawn into wires. (vi) The retina in the human eye contains rod and cone cells for vision. 4 lgh tksM+h cukb, :- (1X6=6) d‚ye A d‚ye B ¼i½ çcy vEy - (a) m"ek'kks"kh vfHkfØ;k ¼ii½ Å"ek dk vo'kks"k.k - (b) vuqokaf'kdrk ds fu;e ¼iii½ lsfjcSye - (c) inkFkZ ikuh esa ?kqy tkrk gS ¼iv) D.N.A - (d) HCl ¼v) esaMsy - (e) vuSfPNd fØ;kvksa dks fu;af=r djrk gS ¼vi) “aq” çrhd gS - (f) thu Match the following :- Column A Column B (i) Strong acid - (a) Endothermic reaction (ii) Absorption of heat - (b) Laws of Genetics (iii) Cerebellum - (c) Substance is dissolved in water (iv) D.N.A - (d) HCl (v) Mendel - (e) Controls involuntary actions (vi) “aq” indicates - (f) Gene 5 ,d 'kCn @ okD; esa mÙkj fyf[k, :- (1X6=6) (i) nks èkkrqvksa dk mnkgj.k nhft, ftudk xyukad de gksrk gS \ (ii) fdlh NM+ pqacd ds ckgj pqacdh; {ks= js[kkvksa dh fn'kk D;k gksrh gS\ (iii) ekuo dk lkekU; jäpki D;k gS\ 4  (iv) ekuo efLr"d dk dkSu lk Hkkx lkspus] lquus] lwa?kus vkSj ns[kus ds fy, fo'ks"kh—r gS\ (v) ek;ksfi;k ¼fudV –f"Vnks"k½dks Bhd djus ds fy, dkSu lk ysal mi;ksx fd;k tkrk gS\ (vi) ,Fkhu dk jklk;fud lw= D;k gS\ Write the answer in one word/ sentence :- (i) Give the example of two metals which have low melting point? (ii) What is the direction of the magnetic field lines outside a bar magnet? (iii) What is the normal blood pressure of human? (iv) Which part of human brain is specialised for thinking, hearing, smelling, seeing etc.? (v) Which lens is used to correct myopia? (vi) What is the chemical formula of ethene? 6 ,Fksu dh bysDVª‚u M‚V lajpuk cukb,A ¼2½ Draw the electron dot structure of ethane. vFkok/OR ehFksu dh bysDVª‚u M‚V lajpuk cukb,A Draw the electron dot structure of methane. 7 fuEufyf[kr vo;oksa ds çrhd fpà cukb, tks ifjiFk vkjs[kksa esa mi;ksx fd, tkrs gSa% (2) (i) cSVjh (ii) çfrjksèkd Draw the symbols of the following components used in the circuit diagrams: (i) Battery (ii) Resistance vFkok/OR fdlh pkyd dk çfrjksèk fdl ij fuHkZj djrk gS\ nks dkjdksa ds uke fyf[k,A Write the name of any two factors on which the resistance of a conductor depends. 8 rkjs fVefVekrs gq, D;ksa fn[kkà nsrs gSa\ (2) Explain why stars appear to twinkle vFkok/OR vkdk'k uhyk D;ksa fn[kkà nsrk gS\ Why does the sky appear blue? 5 9 czk;ksfQye dh ifÙk;k¡ dSls iqu#Riknu djrh gSa\ ¼2½ How the leaves of bryophyllum reproduce? vFkok/OR vehck esa f}[kaMu dh çfØ;k dk o.kZu djsAa Describe the process of binary fission in Amoeba? 10 m"ek{ksih vkSj m"ek'kks"kh vfHkfØ;kvksa esa D;k varj gS\ (2) What is the difference between exothermic and endothermic reactions? vFkok/OR v‚Dlhdj.k vkSj vip;u vfHkfØ;k dks ifjHkkf"kr dhft,A Define oxidation and reduction reaction. 11 esM a y ds i`Fkôj.k fu;e dk D;k egRo gS\ (2) What is the significance of the Mendal law of Segregation? vFkok/OR esaMy ds çHkqRo ds fu;e dks ,d mnkgj.k dh lgk;rk ls le>kb,A\ State the Mendal law of dominance with one example. 12 ekuo mRltZu ra= dk ukekafdr fp= cuk,aA (2) Draw the labelled diagram of human excretory system. vFkok/OR ân; ds nks dikVksa ds uke crkb;sA muds ,d ,d dk;Z fyf[k,A Name two valves of the heart. Write one function of each. 13 çfrorÊ pki D;k gS\ ,d mnkgj.k nhft,A (2) What is reflex action? Give an example. vFkok/OR ekuo 'kjhj esa U;wj‚Ul dh Hkwfedk le>kb,A Explain the role of Neurons in the human body. 14 vkse dk fu;e fyf[k, o bldk xf.krh; O;atd fyf[k,A (2) State Ohm’s law and write its mathematical expression vFkok/OR J`a[kyk esa tqM+s rhu çfrjksèkksa ds dqy çfrjksèk dh x.kuk djs%a R₁ = 2 Ω, R₂ = 3 Ω, vkSj R₃ = 5 Ω Calculate the total resistance of three resistors connected in series: R₁ = 2 Ω, R₂ = 3 Ω and R₃ = 5 Ω. 6 15 viorZukad dks ifjHkkf"kr dhft;sA ikuh dk viorZukad fyf[k,A (2) Define refractive index. What is the refractive index of water ? vFkok/OR ,d mÙky ysal dh Qksdl nwjh 25 lseh gSA ysal dh 'kfä dh x.kuk djsa vkSj crk,a fd ;g vfHklkjh ysal gS ;k vilkjh ysalA A convex lens has a focal length of 25 cm. Calculate the power of the lens and state whether it is a converging or diverging lens. 16 thoksa esa pH eku dk egRo le>kb,A nks mnkgj.k fyf[k,A (2) Explain the role of pH in living organisms. Write two examples vFkok/OR csÇdx lksMk dks xeZ djus ij gksus okyh jklk;fud vfHkfØ;k fdl çdkj dh gS\ jklk;fud lehdj.k fyf[k,A Name the type of chemical reaction that occurs when baking soda is heated? Write the chemical equation. 17 ty çnw"k.k dks dSls fu;af=r dj ldrs gSa\ dksà nks mik; fyf[k,A (2) How can we control water pollution? Write any two measures. vFkok/OR ok;q çnw"k.k ds D;k dkj.k gSa? dksà nks dkj.k fyf[k,A What are the causes of air pollution? Write any two causes. 18 fuEufyf[kr èkkrqvksa dk mnkgj.k nhft,: ¼3½ i. tks yacs le; rd ok;q vkSj ikuh ds laidZ esa vkus ds ckn Hkh tax ugÈ yxkrkA ii ftls lcls vfèkd fo|qr pkydrk ds fy, tkuk tkrk gSA iii ftls vklkuh ls pkdw ls dkVk tk ldrk gSA Give an example of metal which i. Does not corrode even after prolonged exposure to air and water? ii. Is known to have the highest electrical conductivity? iii. Can be easily cut with Knife? vFkok/OR 7  fuEufyf[kr 'kCnksa dks ifjHkkf"kr dhft,% (i) tax (ii) rU;rk (iii) ,uksMkbÇtx Define the following terms: (i) Corrosion (ii) Ductility (iii) Anodizing 19 pqca dh; {ks= js[kkvksa ds pkfjf=d xq.k fyf[k, rFkk js[kkfp= dh lgk;rk ls le>kb,A ¼3½ Write the characteristic features of magnetic field line and draw the sketch diagram. vFkok/OR ,d lh/ks /kkjkokgh pkyd rFkk ,d o`Ùkkdkj ywi ds pkjksa vksj pqacdh; {ks= js[kkvksa dk iSVuZ cuk,a vkSj le>k,aA os dSls fHkUu gSa\ Draw and explain the pattern of magnetic field lines around a straight current carrying conductor and a circular loop. How are they different? 20 vk.kfod lw= C₄H9OH okys dkcZfud ;kSfxd dk IUPAC uke D;k gS ftlesa vYdksgy lewg gksrk gS\ bldh lajpuk cuk,a vkSj laHkkfor leko;oh dk uke fyf[k,aA ¼3½ What is the IUPAC name for an organic compound with the molecular formula C₄H9OH that contains an alcohol group? Draw its structure and write the name of possible isomers. vFkok/OR lajpuk cuk,a vkSj fuEufyf[kr ;kSfxdksa ds fy, IUPAC uke fy[ks%a (a) CH₃CH₂CHO (b) CH₃CH₂OH (c) CH₃COOH. Draw structure and write the IUPAC names for the following compounds: (a) CH₃CH₂CHO. (b) CH₃CH₂OH (c) CH₃COOH. 21 ekuo ikpu ra= dk fp= cukb;s rFkk ykj ds dk;Z fyf[k,A ¼4½ Draw the human digestive system and write the function of saliva. vFkok/OR ekuo ân; dk fp= cukb;s vkSj fyf[k, fd gekjk ifjlapj.k ra= fdl çdkj dk gS\ Draw the human heart and write which type of circulatory system we have? 8 22 eknk çtuu ra= ds fdlh pkj Hkkxksa dk uke crk,a vkSj muds egRo fy[ksAa (4) Label any four parts of female reproductive system and write its significance. vFkok/OR dkf;d çoèkZu tuu dh fofHkUu fofèk;ksa vkSj —f"k esa muds egRo dk o.kZu djsAa Describe the various methods of vegetative propagation and their importance in agriculture. 23 ,d 5 lseh Åaph oLrq vory niZ.k ds lkeus 20 lseh dh nwjh ij j[kh tkrh gS] ftldh Qksdl nwjh 10 lseh gSA niZ.k }kjk cuus okyh çfrÇcc dh fLFkfr] ç—fr vkSj vkdkj Kkr dhft,A (4) An object 5 cm tall is placed at a distance of 20 cm in front of a concave mirror with a focal length of 10 cm. Find the position, nature, and size of the image formed by the mirror. vFkok/OR ,d dkj 8 ehVj dh nwjh ij ,d okgu ds ihNs ds –'; ds fy, mi;ksx fd, x, mÙky niZ.k ds lkeus [kM+h gS] ftldh oØrk f=T;k 6 ehVj gSA niZ.k }kjk cuus okyh çfrÇcc dh fLFkfr] ç—fr vkSj vkdkj Kkr djsAa A car is parked 8 meters away from an automobile's rearview convex mirror with a radius of curvature of 6 meters. Find the position, nature, and size of the image formed by the mirror. ==============X============= 9