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)