2)Determine the amount of heat energy required to convert 12g of ice at -100 C to water Vapour at 1000 C.
3)What are the distinctions between evaporation and boiling?
4)What are the distinctions between heat evaporation and specific heat?
5)How does tooth decay begin when the pH of the mouth is less than 5.5?
6) Can you explain how mirages form? (OR) What is the cause of mirage formation?
7) Using one or two activities, explain the phenomenon of total internal reflection.
8) How do you correct the myopia eye defect?
9) Describe how to correct the eye defect Hypermetropia.
10) Explain how a rainbow forms.
11)Explain briefly the reason for the sky’s blue color.
12) Describe two activities for creating an artificial rainbow.
13) Explain how a rainbow is an example of a continuous spectrum.
14) Explain the importance of three quantum numbers in predicting electron positions in an atom.
15) Give an example of the Aufbau principle.
16) Give an example of Hund’s rule.
17) Give an example of Pauli’s exclusion principle.
18) Explain modern periodic law. Discuss the construction of the periodic table’s long form.
19) Explain how elements in the periodic table are classified into s, p, d, and f-block elements and the benefits of this type of classification.
20) What is the definition of a periodic property?
How do the following properties change over time and in groups? Explain. Atomic radius (a) Ionization energy (b) (c) (d) Electronegativity.
21)What exactly is ionization energy? What are the factors that influence the ionization energy value?
22)What exactly is an ionic bond? How does an ionic bond form? Use an example to demonstrate
23) Using valence bond theory, explain the formation of the following molecules: a) N2 molecule b) O2 molecule
24) What exactly is hybridization? Using hybridization, explain the formation of the following molecules:
a) BeCl2
b) BF3
25) Give examples of Kirchhoff’s laws.
26) Find the expression for the equivalent resistance of three series-connected resistors.
27) Find the expression for the equivalent resistance of three parallelly connected resistors.
28) Draw a diagram to show how an electric motor works.
29) Draw a diagram to show how an AC electric generator works.
30) Draw a diagram to show how a DC generator works.
31) Using two activities, demonstrate how a current carrying wire generates a magnetic field.
32) Using an activity, explain Faraday’s law of induction.
33) Can you write a few notes about the froth floatation process?
34) Can you write a note on ore dressing in metallurgy?
35)What exactly is the thermite process? Mention its practical applications?
36)In what situations do we use handpicking and washing methods in our daily lives? Give some examples. How do you connect these examples to ore enrichment?
37) Define homologous series of carbon compounds; mention any two homologous series characteristics.
38) Explain how soap works to clean.
39) Distinguish between organic compound esterification and saponification reactions. 40)Write the Alkane Substitution Reactions.
1)How do you experimentally determine the specific heat of a solid?
2) Propose an experiment to demonstrate that the rate of evaporation of a liquid is affected by its surface area and the amount of Vapour already present in the surrounding air.
3) Although alcohols and glucose contain hydrogen, they are not classified as acids. Describe an activity to demonstrate it.
4) What does “water of crystallization” of a substance mean? Describe an activity that demonstrates the crystallization of water.
5) Create a task to learn about the reaction of carbonate or hydrogen carbonate with acids (OR) Demonstrate that the reaction of carbonates and hydrogen carbonates with acids results in the production of carbon dioxide gas (OR) How do you make carbon dioxide gas in your lab and how do you test it?
6) How do you experimentally prove that sin i/sin r is a constant?
7)How do you demonstrate experimentally that the angle of refraction is greater than the angle of incidence when light rays travel from a denser medium to a rarer medium?
8) How do you experimentally demonstrate that the angle of refraction is less than the angle of incidence when light rays travel from rarer to denser medium? (OR) How to find the relationship between the angle of incidence and the angle of refraction
9) How can the refractive index of a glass slab be determined experimentally?
10)How do you prove experimentally that a convex lens’s focal length increases when it is immersed in water?
11) How do you experimentally determine the focal length of a lens? (OR) You’ve got a lens. Propose an experiment to determine the focal length of the lens.
12) How do you determine the refractive index of a prism’s material experimentally?
13) Suggest and explain an experiment to make a rainbow in your classroom.
14) How can you prove that a conductor’s resistance varies with temperature?
15) How do you prove that a conductor’s resistance is proportional to its length for constant cross section area and temperature?
16) Explain Ohm’s law. Propose an experiment to validate it and explain the procedure.
17) Using an experiment, how can you prove that a current carrying wire generates a magnetic field?
18) Propose an experiment to demonstrate that the presence of air and water is required for corrosion. Describe the procedure.
19) Suggest and explain a test to determine the hardness of water.
AS4 (Information skills and Projects) (Information skills and Projects) | Physical Science 10th Class important Questions
SI unit of Specific heat
1) Examine the table and respond to the following questions.
a) What is the standard international unit of Specific heat?
b)What metal is best for kitchen utensils? Why?
c)Which of the following metals is slowly heated up?
d)How much heat energy is required to raise 10 C of 1 gram water?
e) What type of metal is used to solder the wires? Why?
f) What causes the differences in specific heats of different substances?
g) What is the formula for the substance’s specific heat?
Convert 1 cal/g-0 C to J/Kg-J.
2) Continuous heat energy is applied to 1 kg of ice at -50 C until it boils.
The following graph is created by noting Temperature, Time, and Temperature-Time graph. Respond to the following questions
a) What are the melting and boiling points of ice and water?
b) What are the current conditions and temperature at position C?
c)What are the current conditions and temperature at position E?
d)What are the substance states at AB and CD?
e) What are the substance states at BC and DE?
f) Why is there no change in temperature at BC and DE despite continuous heat energy application to the substance?
g) How much heat energy is required to convert 1 gramme of ice at 0 degrees Celsius to water at 0 degrees Celsius?
h) How much heat energy is required to convert 1 gramme of water at 1000 degrees Celsius to Vapour at 1000 degrees Celsius?
3) Examine the table and respond to the following questions. P 7 Q 6 R 11 S 2 T 8 Liquid/Solution pH
a) Which solution(s) turns pink when phenolphthalein is added?
b) Which solution(s) turns red when methyl orange is added?
c) Which of the following is a strong acid? d) Which one represents pure water?
e) If PH=7, calculate the [H] + f) Which solutions are acidic?
g) Which colour is provided by solution Q using the universal indicator?
h) What color does blue litmus paper give when dipped in solution S?
4) Examine the table and respond to the following questions.
substances in the scale are used as antacid
a) What is the composition of blood?
b) Which of the scale’s substances are used as antacids?
c) Which of the following substances is neutral on the above scale?
d) What substance serves as a strong base?
e) Which substance has a high acidity?
f) What is the base PH range?
g) Which of the following is the neutral solution?
h) What is the chemical name of magnesia milk?
I What is the composition of gastric juice based on its strength?
j) Can you arrange the following in descending order of H+ ion concentration?
I Vinegar ii)Distilled water iii)Baking Soda iv)Gastrointestinal fluid v)Household ammonia
k) Sort the substances listed above into strong acid, strong base, weak acid, and weak base.
5)Complete the table below.
a)Determine the SI unit for the refractive index.
b)What happens to the speed of light when it passes through water?
c)Describe the relationship between the speed of light (v) and the refractive index of the medium (n)
d)What is the light speed in Benzene?
e)Why is the RI of kerosene higher than the RI of water?
f)Among ice, fused quartz, ruby, and sapphire
g)In the table, which material has the slowest medium speed of light? Why?
h)Specify the refractive index
i)Organise the following materials and mediums according to the speed of light.
Tarpentine oil, diamond, flint glass, air, and ice
j)Whether the refracted ray bends towards or away from normal when travelling from Water to Kerosene.
8)Complete the following table, which is related to convex lenses.
convex lens
9) Student ‘Bharath’ conducted an experiment and find the focal length of symmetric convex lens
Object Distance(u)
Image Distance(v)
60 cm
20 cm
30 cm
30 cm
25cm
3.75 cm
20cm
60cm
a) What is the convex lens’s focal length?
b) What is the lens’s radius of curvature?
c) At what distance from the lens should the object be kept to obtain a virtual image?
d) Where will the image form when the object distance is 10 cm?
e) What is the lens’ magnification when the object is held at 20cm?
f) How do you calculate the focal length of a convex lens?
g) What are the image characteristics when the object is placed at 30cm?
10) Examine the figure and respond to the questions.
Physical Science 10th Class important Questions
a)What type of eye defect indicates this figure?
b)In the figure, M stands for?
c) Define far point?
d) Which lens is used to correct this eye defect?
e)Draw the symbol of used lens?
f)What is the another name of this eye defect?
g)If the person suffering from this eye defect , what is the focal length of the eye lens?
h) Are the focal lens of the used lens is positive or negative?
11)Observe the following figure and answer the questions
a) What type of eye defect indicates this figure?
b) In the figure, H stands for?
c) Define near point?
d) Which lens is used to correct this eye defect?
e) Draw the symbol of used lens?
f) What is the another name of this eye defect?
g) If the person suffering from this eye defect ,what is the focal length of the eye lens?
h) Are the focal lens of the used lens is positive or negative ?
12)Observe the following table and answer the following | Physical Science 10th Class important Questions 2023
Name of the Student
Power of lens used for a single eye
Bhavitha
+1 D
Bhavitha
-2D
Bharathi
-1 D and +1 D
Physical Science 10th Class important Questions 2023
a) Who is suffering from Hypermetropia
b)What type of vision defect has Bharathi
c) Which type of lens is used by Bhavana
d) What is the focal length of lens used by Bhavitha
13) Complete the following table
