SSC Papers for Practice Science II Maharashtra Board
I) A.Answer
the following sub-questions:
(1) Fill in the blank and rewrite the completed statement: (1)
Recycling is a type of
________ technology.
(2) Considering the relationship in the first pair, complete the
second pair: (1)
Amoeba : Simple binary
fission : : Paramoecium : ________.
(3) Find the odd one out: (1)
Blood vessels, Dentrites,
Cyton, Axon
(4) Name the following: (1)
A metal which does not
react with cold water but reacts with steam
(5) What is organic evolution? (1)
I) B.
Rewrite the following statements by selecting the correct options: (5)
(1) ________ stain will clearly show Amoeba and
Paramoecium in a drop of water taken on a slide and observed under a microscope.
a) Mythylene blue
b) Iodine
c) Safranin
d) Eosin
(2) Reshma was shown slides of
leaves, she could distinguish monocot and dicot leaf on the basis of ________.
a) Shape of stomata
b) Thickness of epidermis
c) Size of cells
d) Diffusion
(3) De-starching of the plant
is done for the experiment on ________ .
a) Transpiration
b) Photosynthesis
c) Respiration
d) Diffusion
(4) Iron is ________.
a) More reactive than zinc
b) More reactive than
aluminium
c) Less reactive than copper
d) Less reactive than
aluminium
(5) 2 ml of ethanoic acid was
taken in each of test tubes A, B, C and 2ml, 4 ml, 6 ml of water was added to
them respectively. A clear solution is obtained in ________.
a) Test tube A
b) Test tube B
c) Test tube C
d) All the test tubes
II) Answer any five of the following: (10)
(1) Give scientific reasons:
Paleontological evidence
suggests that invertebrates came into existence before the vertebrates.
(2) How will you obtain
alternative fuel?
(3) Translate the following
statement into chemical equation and then balance it:
What happens when
aluminium oxide dissolves in aqueous sodium hydroxide?
(4) Write a short notes on the
following:
Germination of seed.
(5) What are alkynes? Name the
first member of alkyne family.
(6) Explain two methods to
prevent corrosion of metals.
III) Attempt any five of the following: (15)
(1) Describe the general
properties of ionic compounds.
(2) Describe the structure of
Benzene. Write its molecular and structural formulae.
(3) Explain the structure of a
neuron with the help of a neat well-labelled diagram.
(4) What are plant hormones?
Give suitable examples with their functions.
(5) Explain advantages of
limited family size and compare it with disadvantages of large family size.
(6) What do you mean by
biological resources? What are the reasons for depletion of biological
resources.
IV) Attempt any one of the following: (5)
(1) Answer the following
questions with reference to the excretory system in human beings:
i) State the names of organs of the system.
ii) Explain the structure and
functions of a nephron
iii) Write the functions of
Bowman’s capsule.
(2) With the help of a diagram
(Punnet square) show a Mendelian experiment where tall pea plant bearing red
flowers is crossed with a short pea plant bearing white flowers. Write both the
phenotypic and genotypic ratio for F2 generation.