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Std.X:SCI
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EMINENT LEARNING
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01
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BOARD QUESTION PAPER OCT 2014
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Time:
3 Hours
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Max.
Marks: 80
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Notes:(1) Use the same answer-sheet
for Section A and Section B.
(2) Draw well-labelled diagrams wherever
necessary.
(3) All Questions are compulsory.
(4) Students should write the answers of
questions in sequence.
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SECTION A
Q1.
A. (a) Rewrite the following statements with suitable words in the blanks:(2)
(i)
Elements showing properties of both metals and non-metals are
known as _________
(ii)
The device used for producing current is called ___________
(2) Rewrite the following table so as to match second and third
column with
first column. (2)
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Column I
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Column II
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Column III
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(i) Myopia
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Old age problem
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Bifocal lens
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(ii) Presbyopia
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Nearsightedness
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Concave lens.
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(3) State whether the following statements is True or False: (1)
(i)The SI unit of
charge is the coulomb.
(B) Choose the correct alternative and rewrite the following
sentence. (5)
(1) Phenolphthalein is
___________ type of indicator.
(a) Natural Indicator (b) Universal Indicator (c) Synthetic Indicator
(d) None of the above.
(2) Which of the
following is not required to find the pH of a given solution?
(a) pH paper (b) Litmus paper (c)
Standard pH value chart.
(d) Universal indicator.
(3) When the resistance of a conductor increases, the current will
________.
(a) increase (b) decrease (c)
remain the same (d) None of the the above.
(4) If three resistors 2 ohms, 3 ohms and 4 ohms are connected in
series, then
the effective
resistance in the circuit will be _______ ohms.
(a) 9 (b) 6 (c) 1 (d) 5
(5) A ray of light strikes
the glass slab at an angle of 500. Then the angle of
incidence will be
______________.
(a) 500 (b) 900 (c) 600 (d) 400
2. Answer the following
questions: (Any five) (15)
1. State Mendeleev’s periodic law.
2. Name two elements having a single
electron in their outermost shell.
3. Grills of doors and windows are
always painted before they are used? Give reason.
4. State the laws of refraction.
5. Draw a well labelled diagram to show
refraction of light through a glass slab.
6. Name two human diseases caused due to
water pollution.
3. Answer the following:
(any five) 15
1. What is corrosion? Do gold ornaments corrode? Justify.
2. If pH value of solution ‘A’ is 8, pH value of solution ‘B’ is 7 and pH
value of solution
‘C’ is 5.5 then:
(i) Which solution is acidic?
(ii) Which solution is basic?
(iii) Which solution is neutral?
3. Write three safety measures in using electricity.
4. What do you mean by dispersion? Name the different colours of light in
the
proper sequence in the spectrum
of light.
5. State the principles of the electric motor and electric generator.
6. State the role of citizens in pollution control. Give three efforts
taken in order
to reduce pollution.
4. Answer any one of the
following questions:
A. (1) What should I choose ___________________
a. for decreasing
resistance in a circuit.
(Resistors in series / Resistors in parallel)
b. for getting protection from electric current.
(Nickel / Ebonite)
c. to measure the current in the circuit?
(Ammeter/ Voltmeter)
(2) My mother was operating washing machine on Sunday morning. Suddenly, she
saw a spark coming out of the electric board and the electric current in the
house failed. An electrician was called to look into the matter. What should he
have noticed.
(B) (1) In which equipment/s do you find ___________________
(a) a concave mirror.
(b) a convex lens
(c) reflecting mirrors?
(2) My grandfather uses a bifocal lens in his spectacle. Explain why.
Section B
5. A. (1) Fill in the
blanks and rewrite the statements: (3)
i. The general formula of Alkane is _________________.
ii. ________ is the largest gland in the body.
iii. The loss of water from the plants is known as ______.
2. State whether the
following statements are True or False:
i. The daughter cells produced by asexual reproduction are genetically
identical to the parent cell.
ii. In sexual mode of reproduction, greater diversities are generated.
B. Choose the correct
alternative and rewrite the following:
1. Ethanoic acid ________________________
a. is odourless b. has a pungent smell c. has smell of rotten
egg.
d. has a vinegar like odour.
2. Which of the following is a mode of asexual reproduction?
a. Fission b. Budding c. spore formation d. All of the above.
3. In hydra the type of reproduction is ___________.
a. Binary fission b. Budding
c. Multiple fission d. None of
the above.
4. Which of the following is not essential for photosynthesis?
a. Oxygen b. Carbon dioxide c. Sunlight d. Chlorophyll
5. Ankita bought some Glucose Powder. She felt is was adulterated with
starch powder.
How would she test it?
a. by sieving b. by dissolving it in water c. by iodine test d. all of the above.
6. Answer the following
sub questions: (any five) (10)
1. Sodium is stored under kerosene. Give reason.
2. What are hydrocarbons? Give one example.
3. Distinguish between: Autotrophic nutrition and Heterotrophic
nutrition.
4. Draw a well labelled diagram of the ‘Liver’.
5. What is pollination? Mention its types.
6. Define Heredity. Give two examples.
7. Answer any five of
the following sub questions: (15)
1. Write three methods of preventing rusting of iron.
2. Draw a well labelled diagram of extraction of Aluminium. Write the
anode reaction
in electrolytic reduction of Alumina.
3. What are functional groups? Name any two compounds containing
functional groups.
4. Classify the following as voluntary and involuntary movements:
i. Coughing
ii. Food getting digested.
iii. Moving a table
iv. Beating of heart.
v. Function of the kidneys.
vi. Flying a kite.
5. Explain the two examples, movements in plants which are growth
independent.
6. What is meant by vegetative propagation? Name the vegetative parts
through
which Potato and Bryophyllum
reproduce.
8. Write the answer of
any one questions given below:
1. (a) How many pairs of autosomes and pairs of sex chromosomes are
present in
a human being? (2)
(b) Which chromosomes are
present in Female? (1)
(c) Which chromosomes are
present in Male? (1)
(d) How does sex determination
take place in human beings? (1)
2. State the powders of Maharashtra Pollution Control Board (MPCB) to
control the Air Pollution. (5)
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