Maharashtra SSC Class 10 Science and Technology I March 2016 question paper
Maximum marks 40 · Time 2 hours
Try each question first, then open its model answer. Where the paper offers a choice, both questions are shown with OR between them.
Q.1 (A)
1 mark each
- Fill in the blanks:Q.1 (A) (1) (i)1 markThe modern periodic table consists of ______ periods.
- Q.1 (A) (1) (ii)1 markThe formula of the chloride of metal M is . The metal M belongs to ______ group.
- Q.1 (A) (1) (iii)1 markCorrosion can be prevented by using ______ solution.
- Find the odd one out:Q.1 (A) (2) (i)1 markVoltmeter, ammeter, galvanometer, thermometer.
- Q.1 (A) (2) (ii)1 markLoudspeaker, bar magnet, electric motor, microphone.
Q.1 (B)
1 mark each
- Q.1 (B) (1)1 markReaction of iron nails with copper sulphate solution is an example of
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- Q.1 (B) (2)1 markDilute NaOH can be tested with
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- Q.1 (B) (3)1 markIn series combination which remains constant?
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- Q.1 (B) (4)1 markAn object of 10 cm is placed in front of a plane mirror. The height of image will be ______.
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- Q.1 (B) (5)1 markWhen a ray of light travels from air to glass slab and strikes the surface of separation at , then it ______.
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Q.2
2 marks each · attempt any 5
- Define the following:Q.2 (1) (i)2 marksDefine: 1 volt PD (potential difference).
- Q.2 (1) (ii)Define: Electric power.
- Q.2 (2)2 marksWhat major harm is done to the human beings by air pollution?
- Q.2 (3)2 marksCalculate the focal length of a corrective lens having power .
- Q.2 (4)2 marksWrite two applications of sodium bicarbonate (baking soda).
- Q.2 (5)2 marksA simple microscope is used by watch repairers. Give reason.
- Q.2 (6)2 marksDraw a neat and labelled diagram of the pH scale.
Q.3
3 marks each · attempt any 5
- Q.3 (1)3 marksWhat are the main features of Mendeleev's periodic table?
- Q.3 (2)3 marksDefine 'redox reaction'. Give one example.
- Given below is a diagram showing a defect of the human eye. Study it and answer the following questions. (The figure shows parallel rays from an object being focused by the eye lens behind the retina.)Q.3 (3) (i)3 marksName the defect shown in the figure.
- Q.3 (3) (ii)Give reason for this defect of eye in human beings.
- Q.3 (3) (iii)Name the type of lens used to correct the eye defect.
- Q.3 (4)3 marksWhat is refraction of light? How is it related to refractive index?
- Q.3 (5)3 marksExplain how spectrum is formed.
- Suggest measures in the following situations:Q.3 (6) (i)3 marksTo avoid noise pollution in the classroom.
- Q.3 (6) (ii)To minimize electricity consumption at home.
- Q.3 (6) (iii)Bursting fire crackers in festivals and processions.
Q.4
5 marks each · attempt any 1
- Q.4 (1)5 marksFind the expression for the resistors connected in series and write the two characteristics of it. (Draw figure.)
- Q.4 (2)5 marksExplain 'Electric motor' with the help of the following points: (i) Draw figure (ii) Principle of Electric motor (iii) Name any four appliances where electric motor is used.