# Question Bank Solutions for SSC (Marathi Semi-English) 10th Standard [इयत्ता १० वी] - Maharashtra State Board - Science and Technology 1

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Science and Technology 1
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What is refraction of light? Explain with the help of example.

[0.06] Refraction of Light
Chapter: [0.06] Refraction of Light
Concept: Refraction of Light
 Column I Column II Column III 1 Dispersion Long-sightedness Twinkling of stars 2 Refraction Splitting of white light into component colours Convex lens 3 Hypermetropia Change in the direction of the ray of light due to change in medium Spectrum of seven colours
[0.06] Refraction of Light
Chapter: [0.06] Refraction of Light
Concept: Refraction of Light

A circular coil of wire consisting of 100 turns, each of radius 8.0 cm carries a current of 0.40 A. What is the magnitude of the magnetic field B at the centre of the coil?

Concept: Magnetic Force

Magnetic lines of force always cross each other

Concept: Magnetic Force

Define magnetic lines of force

Concept: Magnetic Force

What are amphoteric oxides? Give two examples of amphoteric oxides.

[0.08] Metallurgy
Chapter: [0.08] Metallurgy
Concept: Types of Elements: Metals

What is the free fall?

[0.01] Gravitation
Chapter: [0.01] Gravitation
Concept: Gravitation

The masses of the earth and moon are 6 × 1024 kg and 7.4 × 1022 kg, respectively. The distance between them is 3.8 × 105 km. Calculate the gravitational force of attraction between the two? Use G = 6.7 × 10–11 N m2 kg–2

[0.01] Gravitation
Chapter: [0.01] Gravitation
Concept: Gravitation

The mass of the earth is 6 × 1024 kg. The distance between the earth and the sun is 1.5 × 1011 m. If the gravitational force between the two is 3.5 × 1022 N, what is the mass of the sun? Use G = 6.7 × 10–11 N m2 kg–2

[0.01] Gravitation
Chapter: [0.01] Gravitation
Concept: Gravitation

Rearrange the columns 2 and 3 so as to match with the column 1.

 Column 1 Column 2 Column 3 i. Triadii. Octaveiii. Atomic numberiv. Periodv. Nucleusvi. Electron a. Lightest and negatively charged particle in all the atomsb. Concentrated mass and positive chargec. Average of the first and the third atomic massd. Properties of the eighth element similar to the firste. Positive charge on the nucleusf. Sequential change in molecular formulae 1.Mendeleev 2. Thomson 3. Newlands 4. Rutherford 5. Dobereiner . Moseley
[0.02] Periodic Classification of Elements
Chapter: [0.02] Periodic Classification of Elements
Concept: History of Periodic Table: Early Attempts at the Classification of Elements

Choose the correct option and rewrite the statement.
The number of electrons in the outermost shell of alkali metals is _______.

[0.02] Periodic Classification of Elements
Chapter: [0.02] Periodic Classification of Elements
Concept: History of Periodic Table: Early Attempts at the Classification of Elements

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

[0.02] Periodic Classification of Elements
Chapter: [0.02] Periodic Classification of Elements
Concept: History of Periodic Table: Early Attempts at the Classification of Elements

The molecular formula of the chloride of element X is XCl. This compound is a solid having a high melting point. Which of the following elements be present in the same group as X.

[0.02] Periodic Classification of Elements
Chapter: [0.02] Periodic Classification of Elements
Concept: History of Periodic Table: Early Attempts at the Classification of Elements

In which block of the modern periodic table are the nonmetals found?

[0.02] Periodic Classification of Elements
Chapter: [0.02] Periodic Classification of Elements
Concept: History of Periodic Table: Early Attempts at the Classification of Elements

Tell the odd one out. Give proper explanation.

[0.04] Effects of Electric Current
Chapter: [0.04] Effects of Electric Current
Concept: Electric Circuit

Tell the odd one out. Give proper explanation.

Voltmeter, Ammeter, galvanometer, thermometer.

[0.04] Effects of Electric Current
Chapter: [0.04] Effects of Electric Current
Concept: Electric Circuit

Explain the construction and working of the following. Draw a neat diagram and label it.

Electric motor

[0.04] Effects of Electric Current
Chapter: [0.04] Effects of Electric Current
Concept: Electric Circuit

Fill in the blank and rewrite the sentence.

During transformation of liquid phase to solid phase, the latent heat is ............ .

[0.05] Heat
Chapter: [0.05] Heat
Concept: Latent Heat and Specific Latent Heat

Fill in the blank and Explain the completed sentences.

The change in ................ of light rays while going from one medium to another is called refraction.

[0.06] Refraction of Light
Chapter: [0.06] Refraction of Light
Concept: Refraction of Light

Write scientific reason.

Elements belonging to the same group have the same valency.

[0.02] Periodic Classification of Elements
Chapter: [0.02] Periodic Classification of Elements
Concept: History of Periodic Table: Early Attempts at the Classification of Elements
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