SSC (English Medium)
SSC (Marathi Semi-English)
Academic Year: 2014-2015
Date: March 2015
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The device used for producing electric current is called _________.
Chapter: [0.04] Effects of Electric Current [0.15] All about Electromagnetism
_________ the second layer of the atmosphere reaches 48 km above the Earth’s surface.
Chapter: [0.18] Striving for better Environment 1
| Column A | Column B | ||
| i | eosin | 1 | losing hydrogen |
| ii | oxidation | 2 | synthetic indicator |
| 3 | losing oxygen | ||
| 4 | natural indicator |
Chapter: [0.13] The Acid Base Chemistry
Give the molecular formula of bleaching powder.
Chapter: [0.13] The Acid Base Chemistry
When phenolphthalein is added to NaOH, the colour of the solution will become _________.
- colourless
- red
- pink
- yellow
Chapter: [0.13] The Acid Base Chemistry
If the potential difference across the ends of a conductor is 220 V and the resistance of the conductor is 44 Ω (ohm), then the current flowing through is _________.
- 0.2 A
- 0.5 A
- 2 A
- 5 A
Chapter: [0.04] Effects of Electric Current [0.14] The Electric Spark
1 A = _________ mA
- 102
- 103
- 10-3
- 10-6
Chapter: [0.14] The Electric Spark
The distance between principal focus and optical centre of the lens is _________.
- diameter
- focal length
- principal axis
- optical centre
Chapter: [0.16] Wonders of Light 1
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When rays of light are incident on a glass slab then the incident ray and emergent ray are _________ each other.
- perpendicular
- parallel
- opposite
- concurrent
Chapter: [0.17] Wonders of Light 2 [0.17] Wonders of Light 2
Give a scientific reason:
Danger signals are red in colour.
Chapter: [0.17] Wonders of Light 2
Complete the following reaction, balance it and write the name of the products CuO + HCI →_________ + _________
Chapter: [0.03] Chemical Reactions and Equations [0.12] The Magic of Chemical Reactions
State Newlands‘ Law of Octaves.
Chapter: [0.02] Periodic Classification of Elements [0.11] School of Elements
The velocity of light in a medium is 1.5 x 108 m/s. What is the refractive index of the medium with respect to air, if the velocity in air is 3 x 108 m/s?
Chapter: [0.06] Refraction of Light [0.17] Wonders of Light 2
Differentiate between resistances in series and parallel.
Chapter: [0.14] The Electric Spark
Draw a ray diagram for concave mirror when the object is between centre of curvature and focus.
Chapter: [0.16] Wonders of Light 1 [0.16] Wonders of Light 1
Explain the role of citizen in pollution control.
Chapter: [0.18] Striving for better Environment 1
What is a spectrum?
Chapter: [0.17] Wonders of Light 2 [0.17] Wonders of Light 2
Why do we get a spectrum of seven colors when white light is dispersed by a prism?
Chapter: [0.17] Wonders of Light 2 [0.17] Wonders of Light 2
State four most common electrical appliances based on heating effect of electric current. Why do we use finely heated platinum wire in surgery?
Chapter: [0.04] Effects of Electric Current [0.14] The Electric Spark
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Name the product obtained when Plaster of Paris is mixed with water. State the use of the product. Give two uses of POP.
Chapter: [0.13] The Acid Base Chemistry
Classify the following elements into metals, non-metals and metalliods
As, C, Hg, Mg, S, Si
Chapter: [0.02] Periodic Classification of Elements [0.11] School of Elements
Complete the following :-
(a)
Chapter: [0.14] The Electric Spark
Complete the following :-
(b)
Chapter: [0.14] The Electric Spark
Complete the following :-
(c)
Chapter: [0.14] The Electric Spark
When does short circuiting take place?
Chapter: [0.15] All about Electromagnetism
What happens to the resistance of the circuit during a short circuit?
Chapter: [0.15] All about Electromagnetism
What happens to the flow of electric current during a short circuit?
Chapter: [0.15] All about Electromagnetism
What is overloading?
Chapter: [0.15] All about Electromagnetism
How can the effects of overloading be avoided?
Chapter: [0.15] All about Electromagnetism
In a Std. X class out of 40 students 10 students use spectacles, 2 students have positive power and 8 students have negative power of lenses in their spectacles.
Answer the following questions:
(1) What does the negative power indicate?
(2) What does the positive power indicate?
(3) Generally which type of spectacles do most of the students use?
(4) What defect of eyesight do most of the students suffer from?
(5) Give two possible reasons for the above defect.
Chapter: [0.07] Lenses [0.16] Wonders of Light 1
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