SSC (English Medium)
SSC (Marathi Semi-English)
Academic Year: 2013-2014
Date: मार्च 2014
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Fill in the blank:
Very fine particles mainly scatter ………… colored light.
Chapter: [0.17] Wonders of Light 2
The element eka-silicon in Mendeleev’s periodic table is known as ………… in the modern periodic table.
Chapter: [0.02] Periodic Classification of Elements [0.11] School of Elements [0.11] School of Elements
Sodium or potassium salt of higher fatty acid is termed …………
Chapter: [0.13] The Acid Base Chemistry
CuSO4(aq) + Zn(s) → ZnSO4(aq) + Cu(s) is an example of a decomposition reaction.
Chapter: [0.03] Chemical Reactions and Equations [0.12] The Magic of Chemical Reactions
Magnetic lines of force are closed continuous curves.
Chapter: [0.15] All about Electromagnetism
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The reddish brown deposit formed on iron nails kept in a solution of copper sulphate is
- Cu2O
- Cu
- CuO
- CuS
Chapter: [0.03] Chemical Reactions and Equations [0.12] The Magic of Chemical Reactions
What will be the change in the current if the potential difference is kept constant and the resistance of the circuit is made four times?
- It will remain unchanged.
- It will become four times.
- It will become one-fourth.
- It will become half.
Chapter: [0.04] Effects of Electric Current [0.14] The Electric Spark
Choose the correct alternative and rewrite the following sentence.
A ray of light strikes the glass slab at an angle of 50°. What is the angle of incidence?
50°
90°
60°
40°
Chapter: [0.17] Wonders of Light 2 [0.17] Wonders of Light 2
From which plant is litmus paper or litmus solution obtained?
- Moss
- Rose
- Hibiscus
- Lichen
Chapter: [0.13] The Acid Base Chemistry
If the equivalent resistance is to be increased, then the number of resistances should be connected in
- Series
- Parallel
- Mixed arrangement
- None of the above
Chapter: [0.14] The Electric Spark
Elements in the same group show the same valency. Give scientific reason.
Chapter: [0.02] Periodic Classification of Elements [0.11] School of Elements
Find the resistance of a conductor if 0.24 A current is passing through it and a potential difference of 24 V is applied across it.
Chapter: [0.04] Effects of Electric Current [0.14] The Electric Spark
Differentiate between primary pollutants and secondary pollutants.
Chapter: [0.18] Striving for better Environment 1
Write the electronic configuration of K and Ne.
Chapter: [0.02] Periodic Classification of Elements [0.11] School of Elements
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State Fleming’s right-hand rule.
Chapter: [0.04] Effects of Electric Current [0.15] All about Electromagnetism
Write a short note on dispersion of light.
Chapter: [0.17] Wonders of Light 2 [0.17] Wonders of Light 2
State three differences between direct current and alternating current.
Chapter: [0.04] Effects of Electric Current [0.15] All about Electromagnetism
After you have dinner tonight, wash your own plates with soap/detergent.
- What colour change is observed when soap/detergent is applied?
- Name the type of reaction and explain it.
Chapter: [0.12] The Magic of Chemical Reactions
Methyl orange is used as an indicator. It shows colour change in acid, base and neutral substance. Tabulate your result as follows:
| Indicator | Colour change | Inference |
| Methyl Orange | No change | ...................... |
| .................... | Acid | |
| Yellow | ....................... |
Chapter: [0.03] Chemical Reactions and Equations [0.12] The Magic of Chemical Reactions
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: [0.07] Lenses [0.16] Wonders of Light 1
State three effects of radioactive pollution.
Chapter: [0.18] Striving for better Environment 1
Define refraction and state the laws of refraction.
Chapter: [0.17] Wonders of Light 2 [0.17] Wonders of Light 2
With a neat labelled diagram and derive the equation for three resistances connected in parallel.
Chapter: [0.14] The Electric Spark
With the help of an appropriate ray diagram, state the sign conventions for reflection by a spherical mirror.
Chapter: [0.16] Wonders of Light 1 [0.16] Wonders of Light 1
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