Grade10/SSC/Practice Paper Science1/2025

Maharashtra SSC Board Exam 2025

Science and Technology Part 1

Max Marks: 40 | Time: 2 Hours

Instructions:

All questions are compulsory.

Neat diagrams must be drawn wherever necessary.

Use of log tables is allowed.

Figures to the right indicate full marks.

Section A: Multiple Choice Questions (8 Marks)

Q1. Choose the correct option: (1 x 8 =8)

1. The unit of force is:

(a) Pascal

(b) Newton

(c) Joule

(d) Watt

2. When two or more reactants combine together, the reaction is known as ………

(a) Displacement 

(b) Decomposition 

(c) Combination 

(d) oxidation 

3. The speed of light in a vacuum is approximately:

(a) 3×108 m/s

(b) 3×107 m/s. (c) 3×106 m/s (d) 3×109 m/s

4. The pH of pure water is:

(a) 5

(b) 7

(c) 9

(d) 14

5. The lens used to correct myopia is:

(a) Convex

(b) Concave

(c) Cylindrical

(d) Bifocal

6. Which gas is used in fire extinguishers?

(a) Oxygen

(b) Carbon dioxide

(c) Nitrogen

(d) Hydrogen

7. The formula of sodium hydroxide is:

(a) NaCl

(b) NaOH

(c) KOH

(d) NH₄OH

8. Electric current is measured in:

(a) Ohms

(b) Amperes

(c) Volts

(d) Watts

Section B: Short Answer Questions (16 Marks)

Q2. Answer the following in brief: (2 x 4 = 8)

1. State Newtons law of gravitation. 

2. What is the difference between an exothermic and an endothermic reaction?

3. Explain Baeyers process

4. Define displacement and give an example.

Q3. Solve the following: (2 x 4 = 8)

1. A car accelerates uniformly from a speed of 10 m/s to 20 m/s in 5 seconds. Calculate the acceleration.

2. Write the balanced chemical equation for the Double displacement reaction. 

State and explain Keplers third law.

3. Calculate the refractive index of a medium if the speed of light in the medium is 2×108 m/s.

Section C: Long Answer Questions (16 Marks)

Q4. Answer any two of the following: (4 x 2 = 8)

1. Explain the working of a simple electric motor with a neat labeled diagram.

2. What are acids and bases? Explain with two examples of each.

3. Draw labelled diagram for electrolytic reduction of Alumina.

4. Draw the structure of the given organic compound.

a. 2-Methyl Butane

b. Acetylene

c. 2 Butene

d. Acetic acid

Q5. Answer any two of the following: (4 x 2 = 8)

1. Draw a ray diagram for the formation of an image by a convex lens when the object is placed beyond 2F. Explain the nature of the image.

2. Explain the chemical properties of metals with examples.

3. A ball is thrown vertically upward with a velocity of 30 m/s. Calculate:

(a) The time taken to reach the maximum height.

(b) The maximum height attained. (Take g=10 m/s2)

Grade 9 Physics. ICSE. Marks 50

Topics 

1. Measurements and Experimentation

2. Motion in one dimension

3. Laws of motion

4. Pressure in fluids and atmospheric pressure

5. Upthrust in fluids, Archimedes' 6. principle and floatation

7. Heat and Energy

8. Reflection of light

9. Propagation of sound waves

10. Current electricity

11. Magnetism

Question 1.   10 Marks

1.  What are the requirements  for selecting a  physical quantity?

2. A body starts to slide over a horizontal surface with an initial velocity of 0.5 ms-1. Due to friction, its velocity decreases at the rate of 0.05 ms-2. How much time will it take for the body to stop?

3.Differentiate between distance and displacement. 

Question 2. ( 10 Marks)

1. Distinguish between fundamental and derived units with examples. 

2.Distinguish between speed and velocity.

3.Classify the following amongst contact and non - contact forces: 

1. Frictional force 

2. Normal reaction force 

3. Force of tension in a string

 4. Gravitational force 

5.Electrostatic force

6.  Magnetic force

Question 3.

1.A car travels the first 30 km with a uniform speed of 60 km h¹ and the next 30 km with a uniform speed of 40 km h 1 Calculate: The total time of journey, and  The average speed of the car.

2. Why does a person fall when he jumps out from a moving train ?

3. What vertical height of water will exert a pressure of 333200 Pa? The density of water is 1000 kgmr³ and g = 9.8 ms-2.

Question 4

1. State three factors on which the pressure at a point in a liquid depends.

2. a. State the principle of floatation.

    b. The mass of a block made of certain material is 1.35 kg and its volume is 1.5 x 10-3 m³ 

1. Find the density of block. 

2. Will this block float or sink? Give reasons for your answer. 

3. State three differences between heat and temperature.

Question 5.

1. Draw a diagram to show the reflection of a ray of light using a plane mirror. In the diagram, label the incident ray, the reflected ray, the normal, the angle of incidence and the angle of reflection.

2. State three conditions necessary for hearing sound.

3. State three characteristics of resistances in the series circuit