SSC Papers for Practice Science I Maharashtra Board
I) A.(a)
Rewrite the following statements with suitable words in the blanks: (2)
1. The strength of a basic substance represented by ________.
2. Scientific evidence reveals that stratospheric ozone is being
destroyed mainly by chlorine atoms of________ molecules.
I) A.(b)
find the odd man out: (1)
Ice changes to water,
ripening of fruits, conversation of milk into curd, rusting of iron nail
I) A.(c)
Rewrite the following table so as to match the second column with the first
column: (2)
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Column ‘A’
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Column ‘B’
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i)
Hans Oersted
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a. Left hand rule
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ii) Washing soda
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b. pH 4
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c. Magnetic effect of
electric current
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d. pH 11
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I) B.
Rewrite the following statements by selecting the correct options: (5)
i) Concentration of ________ ions can be measured by using pH
scale..
a) Oxygen
b) Carbon
c) Hydrogen
d) Helium
ii) When the resistance of
conductor increases the current will ______
a) increase
b) decrease
c) remain constant
d) none of above.
iii) The equivalent resistance
3Ω and 12Ω connected in series is ________.
a) 15Ω
b) 9Ω
c) 0.42Ω
d) 2.3Ω
iv) The minor used in torches
is ________ mirror.
a) Plane
b) Concave
c) Convex
d) Both (B) and (C)
v) ________ Colour of light
deviates the least when a beam of white light passes through a prism.
a) Yellow
b) Green
c) Violet
d) Red
II) Solve
any five of the following: (10)
i) An object placed at a distance of 10 cm from a convex lens of
focal length 15 cm. find the position and nature of the image.
ii) What is scattering of
light? Give one example.
iii) Grills of doors and
windows are always painted before they are used. Give reason.
iv) Name the following:
a. Any two elements having 7
electrons in their outermost shell.
b. Any two elements with
filled outermost shell.
v) Distinguish between
Conductors and Insulators.
vi) Draw a ray diagram for object
kept beyond 2F1, for a convex lens.
III) Answer any five of the following: (15)
i) P and Q are the two elements having similar properties which
obey Newland’s law of Octaves.
a. How many elements are
there in between P and Q?
b. State Newland’s law.
c. Why is it known as
Newland’s law of Octaves?
ii) Write a short note on Acid
rain.
iii) Explain how the formation
of rainbow occurs in nature.
iv) What are electromagnets?
How are they formed? Write names of any four home appliances.
v) Why is edible oil not
allowed to stand for a long time in an iron or tin container?
vi) The heat generated in a
coil of resistance 100Ω in 5 seconds is 522.5 cal. Calculate the P.D. applied
across it to produce that heat.
IV) Attempt any one of the following: (5)
i) Explain the working of Electric Motor.
ii) What is myopia? How does
it occur? How can it be corrected? Explain with suitable diagram.