Maharashtra SSC Class 10 Science and Technology I March 2024 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
- Q.1 (A) (i)1 markThe SI unit of heat is ______.
Tap an option to check your answer.
- Q.1 (A) (ii)1 markWe can see the sun even when it is little below the horizon because of ______.
Tap an option to check your answer.
- Q.1 (A) (iii)1 mark______ is the functional group of carboxylic acid.
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- Q.1 (A) (iv)1 markIn simple microscope ______ lens is used.
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- Q.1 (A) (v)1 markIn ______ process a layer of molten tin is deposited on metals.
Tap an option to check your answer.
Q.1 (B)
1 mark each
- Q.1 (B) (i)1 markWrite the name of the atom having the smallest size.
- Q.1 (B) (ii)1 markWrite the molecular formula of calcium carbonate.
- Q.1 (B) (iii)1 markWrite the use of 'Calorimeter'.
- Q.1 (B) (iv)1 markIdentify the hydrocarbon from the given electron-dot structure: ``` H H .. .. H : C : C : H .. .. H H ```
- Q.1 (B) (v)1 markMatch the Columns:
Column 'A' Column 'B' Refractive index of water (a) 1.31 (b) 1.36 (c) 1.33
Q.2 (A)
2 marks each · attempt any 2
- Q.2 (A) (i)2 marksGive scientific reason: When the gas formed on heating limestone is passed through freshly prepared lime water, the lime water turns milky.
- Q.2 (A) (ii)2 marksGive scientific reason: Tungsten metal is used to make a solenoid type coil in an electric bulb.
- Q.2 (A) (iii)2 marksGive scientific reason: On exposure to air, silver articles turn blackish after some time.
Q.2 (B)
2 marks each · attempt any 3
- Q.2 (B) (i)2 marksState Dobereiner's law of triad. Give one example of it.
- Q.2 (B) (ii)2 marksIdentify the figure and explain its use.
- Q.2 (B) (iii)2 marksWhat is meant by satellite launch vehicle? Name any one Indian satellite launch vehicle.
- Q.2 (B) (iv)2 marksWhat is free fall? When is it possible?
- Q.2 (B) (v)2 marksThe focal length of a convex lens is 20 cm. What is its power?
Q.3
3 marks each · attempt any 5
- Q.3 (i)3 marksSelect the appropriate options and complete the following paragraph: (Metals, non-metals, metalloids, four, seven, s-block, p-block, d-block, f-block) On the basis of electronic configuration, elements in the modern periodic table are classified into ______ blocks. Groups 1 and 2 elements are included in ______ and all these elements are metals (except Hydrogen). Group 13 to 18 elements are included in ______. This block contains metals, non-metals and metalloids. Group 3 to 12 elements are included in ______ and all these elements are ______. Elements shown at the bottom of the periodic table i.e. Lanthanides and Actinides constitute ______ and all these elements are metals.
- Q.3 (ii)3 marks(a) What are the factors affecting the rate of chemical reaction? (b) Explain any one factor.
- Q.3 (iii)3 marksObserve the following graph (temperature vs time on heating ice) and answer the following questions: (a) What does the graph represent? (b) What does the line AB represent? (c) What does the line BC represent?
- Q.3 (iv)3 marksComplete the following table by observing the given figures (two ray diagrams of a defective eye — Figure 1: rays converge in front of the retina; Figure 2: rays converge behind the retina):
Points Figure 1 Figure 2 (a) Name of the defect ? ? (b) Position of the image ? ? (c) Lens used to correct the defect ? ? - Q.3 (v)3 marksWrite any three general properties of ionic compounds.
- Q.3 (vi)3 marksObserve the figure (two bodies of masses and separated by distance , attracting each other with force ) and answer the questions: (a) State Newton's universal law of gravitation. (b) If the distance between the two bodies is tripled, how will the gravitational force between them change? (c) What will happen to gravitational force, if mass of one of the object is doubled?
- Q.3 (vii)3 marksThe orbit of a satellite is exactly 35780 km above the earth's surface and its tangential velocity is 3.08 km/s. How much time the satellite will take to complete one revolution around the earth? (Radius of earth km.)
- Q.3 (viii)3 marksWhat is a solenoid? Draw a neat diagram and name its various components.
Q.4
5 marks each · attempt any 1
- Q.4 (i)5 marksObserve the given diagram (a beam of sunlight passing through a glass prism and splitting into the band of colours ROYGBIV) and answer the questions: (a) Name the process shown in the figure. (b) Name the colour that deviates the most. (c) Name the colour that deviates the least. (d) Name any one phenomenon in the nature which is based on the above process. (e) Define 'spectrum'.
- Q.4 (ii)5 marksObserve the diagram given below (apparatus with a big test tube containing sodium carbonate and acetic acid, connected by a gas delivery tube to a small test tube containing freshly prepared lime water) and answer the questions: (a) Name the reactants in this reaction. (b) Which gas comes out as effervescence in the bigger test tube? (c) What is the colour change in the lime water? (d) In the above experiment instead of sodium carbonate which chemical can be used to get same products? (e) Write the use of acetic acid.