SSC Papers for Practice Science II Maharashtra Board
I) A. (1) Fill
in the blank and rewrite the completed statement: (3)
i) E-waste rules are applicable to all ________ and consumers.
ii) During unfavorable
conditions ________ type of fission is seen in amoeba.
iii) The loss of water from the
plants is known as ________.
(2) State whether the
following statements are True or False: (2)
i) Evolutionary changes are very rapid and random.
ii)Mercury, silver and gold
are very reactive metals.
I) B.
Rewrite the following statements by selecting the correct options: (5)
(1) Ethanoic acid which
solidifies below 290 K is known as________.
a) Ice
b) Solid acetic acid
c) Glacial acetic acid
d) Ethyl acetate
(2) To demonstrate that carbon
dioxide is given out during respiration,
________ can be placed in a conical flask..
a) Live cockroaches
b) Roasted peanuts
c) Dead fish
d) Cut vegetables
(3) During photosynthesis,
________ absorbs the radiant energy from the sun.
a) Water
b) Starch
c) Chlorophyll
d) CO2
(4) Organisms such as Hydra
use ________ for reproduction in the process of budding.
a) Regenerative cells
b) Generative cells
c) Hyphae
d) None of these
(5) A solution of Al2
(SO4)3 in water is not clear. It is due to ________.
a) Impurities present in
water
b) Hydrolysis of Al2
(SO4)3in water
c) Impurities present in of
Al2 (SO4)3
d) none of these
II) Answer any five of the following: (10)
(1) What are unsaturated
hydrocarbons? Give examples.
(2) State two functions of
MPCB for prevention of water pollution.
(3) Explain the term
vegetative propagation. Give examples.
(4) Write any four physical
properties of non-metals.
(5) Sketch and label the
following diagram:
DNA molecule.
(6) Give scientific reasons
for the following:
We must preserve and
conserve water.
III) Attempt any five of the following: (15)
(1) Which are the dominant and
recessive traits in human beings?
(2) Define transpiration and
ascent of sap. How are they interrelated?
(3) Write the molecular and
structural formula of ethanoic acid and state its two physical properties.
(4) Describe multiple fission
seen in Amoeba with the help of diagram.
(5) Describe the structure and
functions of human brain.
(6) Who was Mendel? What was
his contribution to the field of genetics?
IV) Attempt any one of the following: (5)
(1) In the extraction of
aluminium.
i) Draw the diagram of extraction of aluminium.
ii) Write the cathode reaction
and anode reaction in electrolytic reduction of alumina.
iii) Why is it necessary to
replace anodes from time to time?
(2) Describe the respiratory
system in human beings.