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Question Paper Solutions - Science and Technology - 1 2015 - 2016-S.S.C-10th Maharashtra State Board (MSBSHSE)


Marks: 40
[10]1
[5]1.1
[3]1.1.1 | Fill in the blanks:
[1]1.1.1.1

The modern periodic table consists of ……………. periods.

Chapter: [1] School of Elements
Concept: The Modern Periodic Table
[1]1.1.1.2

The formulae of chloride of metal M is MCl2. The metal M belongs to ……………. group.

Chapter: [1.05] Periodic Classification of Elements
Concept: Position of Elements and Trends in the Modern Periodic Table
[1]1.1.1.3

Corrosion can be prevented by using ……………. solution.

Chapter: [1.01] Chemical Reactions
Concept: Chemical Reactions - Types of Chemical Reactions - Oxidation and Reduction
[2]1.1.2 | Find the odd one out:

Find the odd one out:

(i) Voltmeter, ammeter, galvanometer, thermometer.
(ii) Loudspeaker, bar magnet, electric motor, microphone.

Chapter: [4.01] Effects of Current
Concept: Electric Current and Circuit
[5]1.2 | Choose the correct alternative and rewrite the following:
[1]1.2.1

Reaction of iron nails with copper sulphate solution is an example of
(a) Combination reaction
(b) Decomposition reaction
(c) Displacement reaction
(d) Double displacement reaction

Chapter: [2] The Magic of Chemical Reactions
Concept: Chemical Reactions - Types of Chemical Reactions - Displacement
[1]1.2.2

Dilute NaOH can be tested with
(a) red litmus paper
(b) blue litmus paper
(c) lime water
(d) Na2CO3

Chapter: [3] The Acid Base Chemistry
Concept: Chemical Properties of Acids and Bases
[1]1.2.3

In series combination which remains constant?
(a) Voltage
(b) Current
(c) Both current and voltage
(d) Both are variables

Chapter: [4] The Electric Spark
Concept: Resistance of a System of Resistors - Resistors in Series
[1]1.2.4

An object of 10 cm is placed in front of a plane mirror. The height of image will be …………….
(a) 5 cm
(b) 15 cm
(c) 20 cm
(d) 10 cm

Chapter: [6] Wonders of Light 1
Concept: Mirror Formula and Magnification
[1]1.2.5

When a ray of light travels from air to glass slab and strikes the surface of separation at 90°, then it …………….
(a) bends towards normal
(b) bends away from normal
(c) passes unbent
(d) passes in zigzag way

Chapter: [7] Wonders of Light 2
Concept: Refraction of Light - Refraction Through a Rectangular Glass Slab
[10]2 | Answer the following questions (any five):
[2]2.1

Define 1 volt PD

Chapter: [4.01] Effects of Current
Concept: Electric Potential Difference

Define Electric power

Chapter: [4] The Electric Spark
Concept: Electric Power
[2]2.2

What major harm is done to the human beings by air pollution?

Chapter: [8] Striving for better Environment 1
Concept: Effects of Air Pollution
[2]2.3

Calculate the focal length of a corrective lens having power +2D.

Chapter: [6] Wonders of Light 1
Concept: Refraction at Spherical Surfaces and by Lenses - Power of a Lens
[2]2.4

Write two applications of sodium bicarbonate (baking soda).

Chapter: [1.02] Acids, Bases and Salts
Concept: Chemicals from Common Salt - Baking Soda
[2]2.5

A simple microscope is used by watch repairers. Give reason.

Chapter: [6] Wonders of Light 1
Concept: Applications of Spherical Mirrors and Lenses
[2]2.6

Draw neat and labelled diagram of pH scale.

Chapter: [1.02] Acids, Bases and Salts
Concept: Concept of Ph Scale
[15]3 | Answer the following questions (any five):
[3]3.1

What are the main features of Mendeleev’s periodic table?

Chapter: [1.05] Periodic Classification of Elements
Concept: Mendeleev’s Periodic Table
[3]3.2

Define ‘redox reaction’. Give one example.

Chapter: [1.01] Chemical Reactions
Concept: Chemical Reactions - Types of Chemical Reactions - Oxidation and Reduction
[3]3.3

Given below is a diagram showing a defect of human eye. Study it and answer the following questions.

(i) Name the defect shown in the figure.
(ii) Give reason for this defect of eye in human being.
(iii) Name the type of lens used to correct the eye defect.

Chapter: [3] Natural Phenomena
Concept: Defects of Vision and Their Correction
[3]3.4

What is refraction of light? 

Chapter: [3] Natural Phenomena
Concept: Refraction of Light - Introduction

How refraction of light is related to refractive index?

Chapter: [3] Natural Phenomena
Concept: Refraction of Light - Refractive Index
[3]3.5

Explain how spectrum is formed.

Chapter: [7] Wonders of Light 2
Concept: Refraction of Light - Refraction of Light Through a Glass Block and a Triangular Prism
[3]3.6

Suggest measures to avoid noise pollution in classroom.

Chapter: [8] Striving for better Environment 1
Concept: Noise Pollution and Effects

Suggest measures to minimize electricity consumption at home.

Chapter: [8] Striving for better Environment 1
Concept: Sustainable Use of Resources

Suggest measures in bursting fire crackers in festivals and processions.

Chapter: [8] Striving for better Environment 1
Concept: Abatement of Pollution
[5]4 | Answer any one of the following questions:
[5]4.1

Find the expression for the resistors connected in series and write the two characteristics of it. (Draw figure).

Chapter: [4] The Electric Spark
Concept: Resistance of a System of Resistors - Resistors in Series
[5]4.2 | Explain ‘Electric motor’ with the help of the following points:

Draw figure ‘Electric motor’ and working 

Chapter: [4.02] Magnetic Effects of Current
Concept: Electric Motor

Principle of Electric motor

Chapter: [4.02] Magnetic Effects of Current
Concept: Electric Motor

Name any four appliances where electric motor is used.

Chapter: [4.02] Magnetic Effects of Current
Concept: Electric Motor
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