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Maharashtra State BoardSSC (English Medium) 10th Standard

Science and Technology 1 Official Board Paper 2024-2025 SSC (English Medium) 10th Standard Question Paper Solution

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Science and Technology 1 [Official Board Paper]
Marks: 40 Maharashtra State Board
SSC (English Medium)
SSC (Marathi Semi-English)

Academic Year: 2024-2025
Date & Time: 3rd July 2025, 11:00 am
Duration: 2h
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Note:

  1. All questions are compulsory.
  2. Use of a calculator is not allowed.
  3. The numbers to the right of the questions indicate full marks.
  4. In case of MCQs [Q. No. 1(A)] only the first attempt will be evaluated and will be given credit.
  5. Scientifically correct, labelled diagrams should be drawn wherever necessary.
  6. Each new question should be started on the new page.

Choose the correct alternative:
[1]1. (A) i.

Alkaline earth metals have valency 2. This means that their position in the modern periodic table is in ______.

Group 2

Group 16

Period 2 

d-block

Concept: undefined - undefined
Chapter: [2] Periodic Classification of Elements
[1]1. (A) ii.

When the positive charge on an atom or an ion increases or the negative charge on them decreases it is called ______.

Reduction 

Oxidation

Displacement 

Decomposition

Concept: undefined - undefined
Chapter:
[1]1. (A) iii.

______ device is used to produce electricity.

Electric motor

Galvanometer

Electric generator

Voltmeter

Concept: undefined - undefined
Chapter:
[1]1. (A) iv.

Light changes its direction when going from one transparent medium to another transparent medium. This is called the ______of light.

Reflection 

Dispersion

Refraction 

Absorption

Concept: undefined - undefined
Chapter:
[1]1. (A) v.

Height of the High earth orbit from the surface of the earth is ______.

= 20,000 km

= 27,000 km

< 30,780 km

> 35,780 km

Concept: undefined - undefined
Chapter:
Answer the following questions:
[1]1. (B) i.

Find the odd one out:

Fuse wire, bad conductor, rubber gloves, generator.

Concept: undefined - undefined
Chapter:
[1]1. (B) ii.

Complete the co-relation.

Red light wavelength close to : 700 nm : : Violet light wavelength close to : ______.

Concept: undefined - undefined
Chapter:
[1]1. (B) iii.

Match the pair:

Group ‘A’   Group ‘B’
Farsightedness a. Faraway object can be seen clearly
  b. Nearby object can be seen clearly
  c. Faraway object cannot be seen clearly
Concept: undefined - undefined
Chapter:
[1]1. (B) iv.

Write the electronic configuration of ‘Aluminium’.

Concept: undefined - undefined
Chapter:
[1]1. (B) v.

State with reason whether the sentence is true or false.

The escape velocity on the moon is less than that on the earth.

Concept: undefined - undefined
Chapter: [10] Space Missions
Give scientific reasons (any two):
[2]2. (A) i.

Write scientific reason.

Sodium is always kept in kerosene.

Concept: undefined - undefined
Chapter:
[2]2. (A) ii.

Give scientific reason:

We cannot clearly see an object kept at a distance less than 25 cm from the eye.

Concept: undefined - undefined
Chapter:
[2]2. (A) iii.

Give a scientific reason.

Tungsten metal is used to make a solenoid type coil in an electric bulb.

Concept: undefined - undefined
Chapter: [4] Effects of Electric Current [14] The Electric Spark
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Answer the following questions (any three):
[2]2. (B) i.

An object takes 5 s to reach the ground from a height of 5 m on a planet. What is the value of g on the planet?

Concept: undefined - undefined
Chapter:
[1]2. (B) ii. a.

An element has its electron configuration as 2, 8, 2. Now answer the following question. 

What is the atomic number of this element?

Concept: undefined - undefined
Chapter: [2] Periodic Classification of Elements
[1]2. (B) ii. b.

An element has its electron configuration as 2, 8, 2. Now answer the following question.

To which period does this element belong?

Concept: undefined - undefined
Chapter: [2] Periodic Classification of Elements
[2]2. (B) iii.

Complete the following reaction and give name of products:

CuSO4(aq) + Fe(s) → ______ + ______

Concept: undefined - undefined
Chapter:
[1]2. (B) iv. a.

Define specific heat of an object.

Concept: undefined - undefined
Chapter:
[1]2. (B) iv. b.

SI units and CGS units of specific heat of an object.

Concept: undefined - undefined
Chapter:
[1]2. (B) v. a.

Draw the electron dot diagram and structure of methane.

Concept: undefined - undefined
Chapter:
[1]2. (B) v. b.

Write the electron-dot structures for ethane.

Concept: undefined - undefined
Chapter:
Answer the following questions (any five):
[3]3. i.

Write a short note.

Escape Velocity

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Chapter: [1] Gravitation
[1]3. ii. a.

State the modern periodic law.

Concept: undefined - undefined
Chapter: [2] Periodic Classification of Elements [11] School of Elements
[1]3. ii. b.

How many rows and columns are there in the modern periodic table?

Concept: undefined - undefined
Chapter: [2] Periodic Classification of Elements [11] School of Elements
[1]3. ii. c.

Answer the following sub-question regarding the modern periodic table:

What is the valency of halogens?

Concept: undefined - undefined
Chapter:
[1]3. iii. a.

State whether the following reaction is endothermic or exothermic:

HCl + NaOH → NaCl + H2O + Heat

Concept: undefined - undefined
Chapter:
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[1]3. iii. b.

State whether the following reaction is endothermic or exothermic:

\[\ce{2KClO_{3(s)}->[\Delta] 2KCl_{(s)} + 3O2↑}\]

Concept: undefined - undefined
Chapter:
[1]3. iii. c.

State whether the following reaction is endothermic or exothermic:

CaO + H2O → Ca(OH)2 + Heat

Concept: undefined - undefined
Chapter:
[1]3. iv. a.

Identify the figure and give its use.

Concept: undefined - undefined
Chapter: [4] Effects of Electric Current [14] The Electric Spark
[1]3. iv. b.

Identify the figure and give its use.

Concept: undefined - undefined
Chapter: [4] Effects of Electric Current [14] The Electric Spark
[1]3. iv. c.

Identify the figure and give its use.

Concept: undefined - undefined
Chapter: [4] Effects of Electric Current
[3]3. v.

How much heat energy is necessary to raise the temperature of 5 kg of water from 20°C to 100°C?

Concept: undefined - undefined
Chapter: [5] Heat
[3]3. vi.

Write the Cartesian sign convention for lenses.

Concept: undefined - undefined
Chapter:
[3]3. vii.

Complete the following equations:

Concept: undefined - undefined
Chapter: [10] Space Missions
[1]3. viii. a.

Write a balanced chemical equation for the thermit process reaction.

Concept: undefined - undefined
Chapter:
[1]3. viii. b.

Give the chemical equation for the following reaction:

Burning of magnesium in air

Concept: undefined - undefined
Chapter:
[1]3. viii. c.

Give the chemical equation for the following reaction:

Iron nail/dust is dropped in aqueous solution of copper sulphate.

Concept: undefined - undefined
Chapter:
Answer the following (any one):
[5]4. i.

Prove the statement.

A rainbow is the combined effect of the refraction, dispersion, and total internal reflection of light.

Concept: undefined - undefined
Chapter:
[5]4. ii.

Complete the following table:

Sr. No. Straight chain of carbon atoms Molecular formula Name
1. C CH4 ______
2. C-C ______ Ethane
3. C-C-C C3H8 ______
4. C-C-C-C ______ Butane
5. C-C-C-C-C C5H12 ______
6. C-C-C-C-C-C ______ Hexane
7. C-C-C-C-C-C-C ______ Heptane
8. C-C-C-C-C-C-C-C C8H18 ______
9. C-C-C-C-C-C-C-C-C ______ Nonane
10. C-C-C-C-C-C-C-C-C-C ______ Decane
Concept: undefined - undefined
Chapter:

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