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Science and Technology 1 2016-2017 SSC (English Medium) 10th Standard Board Exam Question Paper Solution

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

Academic Year: 2016-2017
Date & Time: 18th March 2017, 11:00 am
Duration: 2h
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[10]1
[5]1.A
[2]1.A.i
[1]1.A.i.i

Find the odd man out:

Camphor, Ammonium Chloride, Naphthalene balls, Sugar

Concept: undefined - undefined
Chapter: [0.03] Chemical Reactions and Equations [0.12] The Magic of Chemical Reactions
[1]1.A.i.ii

Find the odd man out:

Turmeric, Methyl Orange, Rose petals, Beetroot.

Concept: undefined - undefined
Chapter: [0.03] Chemical Reactions and Equations [0.12] The Magic of Chemical Reactions
[2]1.A.ii

Match the following:

Column I Column II
(i) Myopia (a) Converging power of eye lens becomes low
(ii) Hypermetropia (b) Converging power of eye lens remains the same
  (c) Converging power of eye lens becomes high
Concept: undefined - undefined
Chapter: [0.07] Lenses [0.16] Wonders of Light 1
[1]1.A.iii

Fill in the blank:

To increase the effective resistance in a circuit the resistors are connected in _____________.

Concept: undefined - undefined
Chapter: [0.14] The Electric Spark
[5]1.B | Rewrite the following statements by selecting the correct options:
[1]1.B.i

Rewrite the following statements by selecting the correct options:
\[\ce{CaCO3 ->[\Delta] CaO + CO2 ^}\] is a __________ reaction.

combination

displacement

double displacement

decomposition

Concept: undefined - undefined
Chapter: [0.03] Chemical Reactions and Equations [0.12] The Magic of Chemical Reactions
[1]1.B.ii

The colour of universal indicator solution is ____________.

(a) red
(b) blue
(c) green
(d) greenish yellow

Concept: undefined - undefined
Chapter: [0.13] The Acid Base Chemistry [0.13] The Acid Base Chemistry
[1]1.B.iii

The height of the image formed by an object of height 10 cm placed in front of a plane mirror is __________.

(a) 5 cm
(b) 10 cm
(c) 15 cm
(d) 20 cm

Concept: undefined - undefined
Chapter: [0.16] Wonders of Light 1
[1]1.B.iv

Choose the correct alternative and rewrite the following sentence.

When the resistance of a conductor increases, the current will ________ increase.

increase

decrease

remain the same

None of the the above.

Concept: undefined - undefined
Chapter: [0.14] The Electric Spark
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[1]1.B.v

Lime water turns milky when __________ gas is passed through it.

(a) H2
(b) CO
(c) CO2
(d) SO2

Concept: undefined - undefined
Chapter: [0.13] The Acid Base Chemistry
[10]2 | Answer any five of the following:
[2]2.A

Write two applications of sodium bicarbonate (baking soda).

Concept: undefined - undefined
Chapter: [0.13] The Acid Base Chemistry
[2]2.B

Define magnetic lines of force

Concept: undefined - undefined
Chapter: [0.15] All about Electromagnetism

Write any three properties of magnetic lines of force.

Concept: undefined - undefined
Chapter: [0.15] All about Electromagnetism
[2]2.C

Differentiate between Normal elements and Transition elements.

Concept: undefined - undefined
Chapter: [0.02] Periodic Classification of Elements [0.11] School of Elements
[2]2.D

Classify the given sources of water pollution as natural and manmade:

(1) domestic waste
(2) dead animals
(3) oil spills
(4) ashes released due to forest fires

Concept: undefined - undefined
Chapter: [0.18] Striving for better Environment 1
[2]2.E

An object is held 20 cm away from a converging lens of focal length 10 cm. Find the position of the image formed.

Concept: undefined - undefined
Chapter: [0.07] Lenses [0.16] Wonders of Light 1
[2]2.F

What do you understand by the term Scattering of light?

Concept: undefined - undefined
Chapter:
[15]3 | Solve any five of the following questions:
[3]3.A

Define corrosion.

Concept: undefined - undefined
Chapter: [0.03] Chemical Reactions and Equations [0.12] The Magic of Chemical Reactions

What is meant by rust?

Concept: undefined - undefined
Chapter: [0.03] Chemical Reactions and Equations [0.12] The Magic of Chemical Reactions

Write the chemical formula of rust.

Concept: undefined - undefined
Chapter: [0.03] Chemical Reactions and Equations [0.12] The Magic of Chemical Reactions
[3]3.B

Complete the following table:

Instrument Number of Convex
Lenses
Use
Simple Microscope .............. ..............
Compound Microscope .............. ..............
Telescope .............. ..............
Concept: undefined - undefined
Chapter: [0.07] Lenses [0.16] Wonders of Light 1
[3]3.C
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[1]3.C.i

What do you do in the following situations:

Exposed to exhaust fumes in traffic.

Concept: undefined - undefined
Chapter: [0.18] Striving for better Environment 1
[1]3.C.ii

What do you do in the following situations:

Exposed to a series of firecrackers with high sound level.

Concept: undefined - undefined
Chapter: [0.18] Striving for better Environment 1
[1]3.C.iii

What do you do in the following situations:

Get turbid drinking water during monsoon.

Concept: undefined - undefined
Chapter: [0.18] Striving for better Environment 1
[3]3.D

Label the four parts of an electric motor

Concept: undefined - undefined
Chapter: [0.04] Effects of Electric Current [0.15] All about Electromagnetism

write two uses of DC motor

Concept: undefined - undefined
Chapter: [0.15] All about Electromagnetism
[3]3.E

State any three demerits of Mendeleev’s periodic table.

Concept: undefined - undefined
Chapter: [0.02] Periodic Classification of Elements [0.11] School of Elements
[3]3.F
[1]3.F.i

Draw the electrical symbols of the following components and state its use

Wire crossing

Concept: undefined - undefined
Chapter: [0.14] The Electric Spark
[1]3.F.ii

Draw the electrical symbols of the following components and state its use:

Rheostat (variable resistance)

Concept: undefined - undefined
Chapter: [0.14] The Electric Spark
[1]3.F.iii

Draw the electrical symbols of the following components and state its use:

Ammeter.

Concept: undefined - undefined
Chapter: [0.14] The Electric Spark
[5]4 | Answer any one of the following questions:
[5]4.A

Observe the following figure and answer the questions given under it:

1) How many times does refraction take place in the above figure?

2) What happens to the ray of light when it passes from air to glass?

3) What happens to the ray of light when it passes from glass to air?

4) What are the rays AB and CD in the figure called?

5) Define refraction.

Concept: undefined - undefined
Chapter: [0.17] Wonders of Light 2 [0.17] Wonders of Light 2
[5]4.B
[3]4.B.i

Find the expression for the resistivity of a material and state the SI unit of resistivity.

Concept: undefined - undefined
Chapter: [0.04] Effects of Electric Current [0.14] The Electric Spark
[2]4.B.ii

Observe the following figure:

If the current in the coil A is changed, will some current be induced in the coil B? Explain.

Concept: undefined - undefined
Chapter: [0.04] Effects of Electric Current [0.15] All about Electromagnetism

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