Class - 10 (Std - X - Science)
Std:
- X Sub:-
Science
Marks:-80
Date:- Time:-
Section A
[Physics, Biology (40)]
Q.1] A] Fill in the blanks. [2]
1] In electric bulb, a …………… filament is used.
2] Electromagnetic induction was first studied by ………….
B] Match the following pairs. [2]
Side-A
Side-B
1] Abscissic acid
A] Promote cell division
2] Gibberellins
B] Fruit opening
3] Cytokinis
C] Growth of stem
4] Auxins
D] Inhibits growth
E] Promote cell Enlargement.
C] Define. [2]
1] Tropism.
2] Fleming’s right hand rule.
D] What are the constituents of Nipermag? [1]
Q.2] Answer the following. [6]
1] Distinguish between ammeter and voltmeter.
2] Give Reason: In domestic electric circuit each appliance has equal potential
difference.
3] State the application of concave mirrors.
Q.3] Solve any four of the following. [12]
1] What are neurons? Explain the function of a neuron.
2] Sweety from STD: 11th uses spectacles. The Number of her spectacles is +0.5
Answer the following questions.
a) State the type of lenses used in her spectacles.
b) Name the defect of vision.
c) Find the focal length of lens.
3] State the characteristics of magnetic lines of force.
4] State ohm’s law and draw the symbols of following components.
a) Tap Key (on)
b) Ammeter.
c) Resistance.
d) Rhoestat.
5] Why concave mirrors are used in solar devices?
Q.4] A] Solve the following. [4]
1] The focal length of concave lens is 30cm. find the position of image if an
object is placed at a distance of 60 cm from the lens.
2] Calculate the heat generated in a coil of resistance 41.08 in 5 minutes
whe 0.5 ampere current is passed a cross it.
B] Solve any four of the questions. [6]
1] Draw a neat labeled diagram of Resistance in series.
2] Write a short note on safety measures in using electricity.
3] Draw neat labeled ray diagram for image formation by concave mirror
when:- Object is between center of curvature and focus.
4] State the difference between cerebrum and cerebellum.
5] Name four devices in which permanent magnets are used.
Q.5] Obtain mathematical expression for the heat generated in metallic
conductor by electric current. (Joule’s law) [5]
OR
Name the following.
a) Two plants in which tendrils are present.
b) Name the mirror whose focus is situated behind the mirror.
c) Cells that assist neurons in their function.
d) Unit of power of lenses.
e) Fluid which is filled in between meanings.
Section B
[Chemistry (20)]
Q.1] A] Fill in the blanks. [2]
1] Edible oils are compounds of __________ and organic acids.
2] The PH Value of Pure water is _____________.
B] Find the odd man out. [2]
1] HCL, HNO3, CH3 COOH, H2SO4.
3] K2O, AL2O3, NA2O, CA2O.
Q.2] Answer any two of the following. [4]
1] Distinguish between physical change and chemical change.
2] State the Demerits of Mendeleev’s periodic table.
3] What are indicators? Name any two natural indicators.
Q.3] Draw a neat well labeled diagram of: [2]
1] Testing the conductivity of the salt solution……….
Q.4] Explain the following chemical reactions with balanced equations- (Any 3)
[6]
1] Iron nail is dipped in copper sulphate solution.
2] Bleaching powder is exposed to air.
3] Wet cement is mixed with sand.
4] Aluminium bums in presence of oxygen.
Q.5] Explain the features of Newland’s periodic table. [4]
OR
Explain the terms:-
1] Malleability.
2] Calcination
3] Gangue
4] Metalloids.
Date:- 18/02/ Science & Technology Marks:-60
Std:- X Section-A (Set-2) Time:-
Q.1] A] Rewrite the following statement by selecting the correct option. 3.
1] In dispersion of sunlight by a glass prism ….. ray is deviated the most.
a) red b) yellow c) orange d) violet.
2] At the time of short circuit, the current in the ciruit…………
a) increases b) decreases c) remains the same d) increases in steps.
3] 1 kilowatt hour = ………..
a) 4.6 X 106 Joules b) 3.5 X 106 Joules c) 30.6 X 106 Joules
d) 3.6 X 105 Joules
B] Identify the odd one : [2]
1] Simple microscope, compound microscope, Telescope, Myopia.
2] Name the elements having one shell and one valence electron.
C] Match the following. [2]
Column-A
Column-B
1] CaOCL2
a] Washing Soda
2] Na2CO3 – 10 H2O
b] Oxidising agent
c] Baking soda
Q.2] Answer the following sub-questions. [6]
1] State any four applications of heating effect of electric current.
2] An Object is placed at a distance of 10 cm from a convex lens of focal length 12 cm. Find the position and nature of the image.
3] Define : Laws of refraction of light.
Q.3] Answer any four sub questions. [12]
1] State the characteristics of magnetic lines of force.
2] Give the reason: Light splits into a spectrum of seven colours when it passes through a prism.
3] Write short note on : Water of crystallization (With proper examples)
4] Define atomic size. How does it varies in a group and in a period?
5] What is the importance of a chemical equation? OR Give the significance of a chemical equation?
Q.4] Attempt any one of the following. [5]
1] With reference to spherical lenses, State the meaning of the following terms or define the following terms: 1) Center of curvature (C) 2) Principal Axis 3) Optical centre (O) 4) Principal focus (F) 5) Focal length (f). .
2] Find the expression for the resistors connected in parallel.
Section –B
Q.5) A) Fill in the blanks and rewrite the completed statements. (3)
1) Yeast reproduces by ………
2) The naturally occurring compounds of metals along with other impurities are known as ……….
3) Triple bond can be obtained by sharing ……….. pairs or ……….electrons.
B) Match the following. (2)
Column-A
Column-B
1) Carbohydrates
a) Protection and regulation
2) Proteins
b) Energy giving
c)Body building.
C) What is short term memory? (1)
D) Write the parts of human nervous system. (1)
Q.6) Answer the following questions. (6)
1) Distinguish between: Metals and Non-metals.
2) Why is Darwin called the father of evolution?
3) Give scientific reasons: Paleontological evidence suggests that invertebrates came into existence before the vertebrates.
Q.7) Attempt any four of the following sub-questions. (12)
1) Explain the formation of an ionic compound between metal and a non-metal by transfer of electrons with Mg as the metal and CL as a non- meatl to illustrate your answer.
2) Explain the structure and function of a nephron.
3) Draw neat and labelled diagram: Human excretory system.
4) Explain the following terms. i) Hydrotropic movement, ii) Phototropism, iii) Seismonastic movement.
5) Explain the terms homozygous and heterozygous using the example of red and white colour of flowers.
Q.8) Attempt any one of the following questions. (5)
1) Draw the chain and ring structure of organic compounds having six carbon atoms in them.
2) Describe the female reproductive system in human beings.
Date:- 18/02/ Science & Technology Marks:-60
Std:- X Section-A (Set –A) Time:-
Q.1] A] Fill in the blanks. 3.
1] A ray of light parallel to the principal axis, after reflection from a concave mirror passes through ----------
2] In FeSO4, 7H2O, H2O represents ---------------
3] The element eka-boron in Mendeleev’s periodic table is called ------ in the modern periodic table.
B] Match the following. [2]
Reactants
Products
Types of Reactions
1] Fe + S
ZnSO4 + Cy
Displacement
2] CuSO4 + Zn
FeS + O2
Combination
FeS
Decomposition
C] Identify the odd one: [2]
1] Loud speaker, Microphone, Electric motor, Bar magnet.
2] Voltmeter, Ammeter, Galvanometer, Thermometer..
Q.2] Answer the following sub-questions. [6]
1] Give Scientific reasons : Why does the sky appear dark instead of blue to a person located in space.
2] Differentiate between convex mirror and concave mirror.
3] Explain the term: Endothermic Reaction.
Q.3] Answer any four sub questions. [12]
1] Explain what is meant by the ‘resistivity of a material and find the expression for it.
2] State any three characteristic of the magnetic lines of force.
3] What are the demerits of Mendeleev’s Periodic table?
4] How do acids and bases react with each other? What is the name of the process? what products are obtained out of this reaction?
5] Solve and fill in the blanks
Velocity in the First medium (V1)
Velocity in the second medium (V2)
Refractive index 1 n 2
refractive index 2 n1
3 x 108 m/s
------------
2 x 108 m/s
1.2 x 108 m/s
2.25 x 108 m/s
-------------
-----------------
4/3
----------------
-------------------
-------------------
1.5
Q.4] A] Attempt any one of the following. [5]
1] Given below is a diagram showing a defect of human eye study. .
i] Name the defect shown in the figure.
ii] Give two possible reasons for this of eye in human being.
iii] Name the type of lens used to correct the eye defect.
iii] Draw a neat labeled diagram to show how the defect is rectified by using the lens.
2] Describe the process of electrolytic reduction of Aluming with the help of diagram.
Section –B
Q.1) A) Fill in the blanks and rewrite the completed statements. (3)
1) --------- artery takes the blood to the lungs for Oxidation
2) Lymph flows in --------- direction.
3) Yeast reproduces by -----------.
B) Name the following. (2)
1) Growth of plants in response to external factors.
2) The small gap between the consecutive neurons.
C) Answer in One sentence. (2)
1) Which of the following metals do not react with hot water or cold water? Sodiam, Potassium, Aluminum, Iron.
2) Write the electron dot and cross structure of methane.
Q.2) Answer the following questions. (6)
1) Give scientific reasons. In human beings the gametes from the male parent decides the sex of the body
2) Explain the following reaction with the help of q balanced chemical equation. Dry aluminum hydroxide is ignited at 1000o C
3) Write a note on Lamarckism.
Q.3) Attempt any four of the following sub-questions. (12)
1) Explain Darwin’s Theory of Evolution.
2) How are fats digested in the human body.
3) Explain reflex action by giving a suitable example.
4) Explain the process of translocation in plants
5) In the extraction of aluminum
i] Name the process of concentration of bauxite.
ii] Write the cathode reaction in electrolytic.
iii] Write the function and formula of cryolite in the extraction of alumina.
Q.8) Attempt any one of the following questions. (4)
1) Explain what is a homologous series by giving suitable examples and write any two important characteristics of the homologous series.
2) Describe sexual reproduction in flowering plants.
Section A
[Physics, Biology (40)]
Q.1] A] Fill in the blanks. [2]
1] In electric bulb, a …………… filament is used.
2] Electromagnetic induction was first studied by ………….
B] Match the following pairs. [2]
Side-A
Side-B
1] Abscissic acid
A] Promote cell division
2] Gibberellins
B] Fruit opening
3] Cytokinis
C] Growth of stem
4] Auxins
D] Inhibits growth
E] Promote cell Enlargement.
C] Define. [2]
1] Tropism.
2] Fleming’s right hand rule.
D] What are the constituents of Nipermag? [1]
Q.2] Answer the following. [6]
1] Distinguish between ammeter and voltmeter.
2] Give Reason: In domestic electric circuit each appliance has equal potential
difference.
3] State the application of concave mirrors.
Q.3] Solve any four of the following. [12]
1] What are neurons? Explain the function of a neuron.
2] Sweety from STD: 11th uses spectacles. The Number of her spectacles is +0.5
Answer the following questions.
a) State the type of lenses used in her spectacles.
b) Name the defect of vision.
c) Find the focal length of lens.
3] State the characteristics of magnetic lines of force.
4] State ohm’s law and draw the symbols of following components.
a) Tap Key (on)
b) Ammeter.
c) Resistance.
d) Rhoestat.
5] Why concave mirrors are used in solar devices?
Q.4] A] Solve the following. [4]
1] The focal length of concave lens is 30cm. find the position of image if an
object is placed at a distance of 60 cm from the lens.
2] Calculate the heat generated in a coil of resistance 41.08 in 5 minutes
whe 0.5 ampere current is passed a cross it.
B] Solve any four of the questions. [6]
1] Draw a neat labeled diagram of Resistance in series.
2] Write a short note on safety measures in using electricity.
3] Draw neat labeled ray diagram for image formation by concave mirror
when:- Object is between center of curvature and focus.
4] State the difference between cerebrum and cerebellum.
5] Name four devices in which permanent magnets are used.
Q.5] Obtain mathematical expression for the heat generated in metallic
conductor by electric current. (Joule’s law) [5]
OR
Name the following.
a) Two plants in which tendrils are present.
b) Name the mirror whose focus is situated behind the mirror.
c) Cells that assist neurons in their function.
d) Unit of power of lenses.
e) Fluid which is filled in between meanings.
Section B
[Chemistry (20)]
Q.1] A] Fill in the blanks. [2]
1] Edible oils are compounds of __________ and organic acids.
2] The PH Value of Pure water is _____________.
B] Find the odd man out. [2]
1] HCL, HNO3, CH3 COOH, H2SO4.
3] K2O, AL2O3, NA2O, CA2O.
Q.2] Answer any two of the following. [4]
1] Distinguish between physical change and chemical change.
2] State the Demerits of Mendeleev’s periodic table.
3] What are indicators? Name any two natural indicators.
Q.3] Draw a neat well labeled diagram of: [2]
1] Testing the conductivity of the salt solution……….
Q.4] Explain the following chemical reactions with balanced equations- (Any 3)
[6]
1] Iron nail is dipped in copper sulphate solution.
2] Bleaching powder is exposed to air.
3] Wet cement is mixed with sand.
4] Aluminium bums in presence of oxygen.
Q.5] Explain the features of Newland’s periodic table. [4]
OR
Explain the terms:-
1] Malleability.
2] Calcination
3] Gangue
4] Metalloids.
Date:- 18/02/ Science & Technology Marks:-60
Std:- X Section-A (Set-2) Time:-
Q.1] A] Rewrite the following statement by selecting the correct option. 3.
1] In dispersion of sunlight by a glass prism ….. ray is deviated the most.
a) red b) yellow c) orange d) violet.
2] At the time of short circuit, the current in the ciruit…………
a) increases b) decreases c) remains the same d) increases in steps.
3] 1 kilowatt hour = ………..
a) 4.6 X 106 Joules b) 3.5 X 106 Joules c) 30.6 X 106 Joules
d) 3.6 X 105 Joules
B] Identify the odd one : [2]
1] Simple microscope, compound microscope, Telescope, Myopia.
2] Name the elements having one shell and one valence electron.
C] Match the following. [2]
Column-A
Column-B
1] CaOCL2
a] Washing Soda
2] Na2CO3 – 10 H2O
b] Oxidising agent
c] Baking soda
Q.2] Answer the following sub-questions. [6]
1] State any four applications of heating effect of electric current.
2] An Object is placed at a distance of 10 cm from a convex lens of focal length 12 cm. Find the position and nature of the image.
3] Define : Laws of refraction of light.
Q.3] Answer any four sub questions. [12]
1] State the characteristics of magnetic lines of force.
2] Give the reason: Light splits into a spectrum of seven colours when it passes through a prism.
3] Write short note on : Water of crystallization (With proper examples)
4] Define atomic size. How does it varies in a group and in a period?
5] What is the importance of a chemical equation? OR Give the significance of a chemical equation?
Q.4] Attempt any one of the following. [5]
1] With reference to spherical lenses, State the meaning of the following terms or define the following terms: 1) Center of curvature (C) 2) Principal Axis 3) Optical centre (O) 4) Principal focus (F) 5) Focal length (f). .
2] Find the expression for the resistors connected in parallel.
Section –B
Q.5) A) Fill in the blanks and rewrite the completed statements. (3)
1) Yeast reproduces by ………
2) The naturally occurring compounds of metals along with other impurities are known as ……….
3) Triple bond can be obtained by sharing ……….. pairs or ……….electrons.
B) Match the following. (2)
Column-A
Column-B
1) Carbohydrates
a) Protection and regulation
2) Proteins
b) Energy giving
c)Body building.
C) What is short term memory? (1)
D) Write the parts of human nervous system. (1)
Q.6) Answer the following questions. (6)
1) Distinguish between: Metals and Non-metals.
2) Why is Darwin called the father of evolution?
3) Give scientific reasons: Paleontological evidence suggests that invertebrates came into existence before the vertebrates.
Q.7) Attempt any four of the following sub-questions. (12)
1) Explain the formation of an ionic compound between metal and a non-metal by transfer of electrons with Mg as the metal and CL as a non- meatl to illustrate your answer.
2) Explain the structure and function of a nephron.
3) Draw neat and labelled diagram: Human excretory system.
4) Explain the following terms. i) Hydrotropic movement, ii) Phototropism, iii) Seismonastic movement.
5) Explain the terms homozygous and heterozygous using the example of red and white colour of flowers.
Q.8) Attempt any one of the following questions. (5)
1) Draw the chain and ring structure of organic compounds having six carbon atoms in them.
2) Describe the female reproductive system in human beings.
Date:- 18/02/ Science & Technology Marks:-60
Std:- X Section-A (Set –A) Time:-
Q.1] A] Fill in the blanks. 3.
1] A ray of light parallel to the principal axis, after reflection from a concave mirror passes through ----------
2] In FeSO4, 7H2O, H2O represents ---------------
3] The element eka-boron in Mendeleev’s periodic table is called ------ in the modern periodic table.
B] Match the following. [2]
Reactants
Products
Types of Reactions
1] Fe + S
ZnSO4 + Cy
Displacement
2] CuSO4 + Zn
FeS + O2
Combination
FeS
Decomposition
C] Identify the odd one: [2]
1] Loud speaker, Microphone, Electric motor, Bar magnet.
2] Voltmeter, Ammeter, Galvanometer, Thermometer..
Q.2] Answer the following sub-questions. [6]
1] Give Scientific reasons : Why does the sky appear dark instead of blue to a person located in space.
2] Differentiate between convex mirror and concave mirror.
3] Explain the term: Endothermic Reaction.
Q.3] Answer any four sub questions. [12]
1] Explain what is meant by the ‘resistivity of a material and find the expression for it.
2] State any three characteristic of the magnetic lines of force.
3] What are the demerits of Mendeleev’s Periodic table?
4] How do acids and bases react with each other? What is the name of the process? what products are obtained out of this reaction?
5] Solve and fill in the blanks
Velocity in the First medium (V1)
Velocity in the second medium (V2)
Refractive index 1 n 2
refractive index 2 n1
3 x 108 m/s
------------
2 x 108 m/s
1.2 x 108 m/s
2.25 x 108 m/s
-------------
-----------------
4/3
----------------
-------------------
-------------------
1.5
Q.4] A] Attempt any one of the following. [5]
1] Given below is a diagram showing a defect of human eye study. .
i] Name the defect shown in the figure.
ii] Give two possible reasons for this of eye in human being.
iii] Name the type of lens used to correct the eye defect.
iii] Draw a neat labeled diagram to show how the defect is rectified by using the lens.
2] Describe the process of electrolytic reduction of Aluming with the help of diagram.
Section –B
Q.1) A) Fill in the blanks and rewrite the completed statements. (3)
1) --------- artery takes the blood to the lungs for Oxidation
2) Lymph flows in --------- direction.
3) Yeast reproduces by -----------.
B) Name the following. (2)
1) Growth of plants in response to external factors.
2) The small gap between the consecutive neurons.
C) Answer in One sentence. (2)
1) Which of the following metals do not react with hot water or cold water? Sodiam, Potassium, Aluminum, Iron.
2) Write the electron dot and cross structure of methane.
Q.2) Answer the following questions. (6)
1) Give scientific reasons. In human beings the gametes from the male parent decides the sex of the body
2) Explain the following reaction with the help of q balanced chemical equation. Dry aluminum hydroxide is ignited at 1000o C
3) Write a note on Lamarckism.
Q.3) Attempt any four of the following sub-questions. (12)
1) Explain Darwin’s Theory of Evolution.
2) How are fats digested in the human body.
3) Explain reflex action by giving a suitable example.
4) Explain the process of translocation in plants
5) In the extraction of aluminum
i] Name the process of concentration of bauxite.
ii] Write the cathode reaction in electrolytic.
iii] Write the function and formula of cryolite in the extraction of alumina.
Q.8) Attempt any one of the following questions. (4)
1) Explain what is a homologous series by giving suitable examples and write any two important characteristics of the homologous series.
2) Describe sexual reproduction in flowering plants.