Maharashtra SSC Class 10 Science and Technology I July 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.

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Q.1 (A)

1 mark each

Q.1 (A) (i)1 mark $In modern periodic table the non-metals are found in ______.$
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Q.1 (A) (ii)1 mark $CuSO_{4(aq)} + Zn_{(s)} \longrightarrow ZnSO_{4(aq)} + Cu_{(s)}$
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Q.1 (A) (iii)1 mark $The unit of electric power is ______.$
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Q.1 (A) (iv)1 mark $We can see the sun even when it is little below the horizon because of ______.$
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Q.1 (A) (v)1 mark $______ is one of the combustible component of L.P.G.$
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Q.1 (B)

1 mark each

Q.1 (B) (i)1 mark $Write the correlation: Brass : Copper and Zinc :: Bronze : ______$
Q.1 (B) (ii)1 mark $Write True or False: Benzene is an aromatic compound.$
Q.1 (B) (iii)1 mark $Find the odd one out: Myopia; Presbyopia; Hypermetropia; Retina$
Q.1 (B) (iv)1 mark $0^\circ$
Q.1 (B) (v)1 mark $Name two appliances which work on the principle of magnetic effect of electric current.$

Q.2 (A)

2 marks each · attempt any 2

Q.2 (A) (i)2 marks $Give scientific reason: Sodium is always kept in kerosene.$
Q.2 (A) (ii)2 marks $Give scientific reason: A simple microscope is used for watch repairs.$
Q.2 (A) (iii)2 marks $Give scientific reason: It is necessary to manage the space debris.$

Q.2 (B)

2 marks each · attempt any 3

Q.2 (B) (i)2 marks $= 3 \times 10^8$
Q.2 (B) (ii)2 marks $Observe the figure and answer the questions given below. (a) Name the phenomenon shown in the figure. (b) Define the above phenomenon.$
Q.2 (B) (iii)2 marks $2H_2S + SO_2 \longrightarrow 3S\downarrow + 2H_2O$

Q.2 (B) (iv)2 marks

Rearrange the column 2 and 3 so as to match with the column 1. Column 1 Column 2 Column 3 (1) Triad Concentrated mass and +ve charge Thomson (2) Octave Average of the atomic masses of first and third element Newlands Properties of the eighth element are similar to first Dobereiner

Q.2 (B) (v)2 marks $Define the following terms: (a) Escape velocity (b) Free fall.$

Column 1	Column 2	Column 3
(1) Triad	Concentrated mass and +ve charge	Thomson
(2) Octave	Average of the atomic masses of first and third element	Newlands
	Properties of the eighth element are similar to first	Dobereiner

Q.3

3 marks each · attempt any 5

Q.3 (i)3 marks $CaCO_{3(s)} \xrightarrow{\Delta} CaO_{(s)} + CO_2\uparrow$
Q.3 (ii)3 marks $Observe the following ray diagram and answer the questions given below: (a) Identify the instrument shown in the diagram. (b) What is the combined effect of two lenses? (c) Write the use of the above instrument.$
Q.3 (iii)3 marks $Read the following paragraph and answer the questions given below: Rainbow is a beautiful natural phenomenon. It is the combined effect of dispersion, refraction and total internal reflection of light. It can be seen mainly after rainfall. Small droplets of water act as small prisms. When light rays from the sun enter these droplets it gets refracted and dispersed. Then there is internal reflection and after that once again the light gets refracted while coming out of the droplet. All these three processes together produce the rainbow. (a) Which three major phenomena are responsible for rainbow formation? (b) How does refraction take place? (c) Draw a diagrammatic representation of rainbow production.$
Q.3 (iv)3 marks $From the elements of second period of the modern periodic table given below, answer the following questions: Atomic number 345678910 Symbol Li Be B C N O F Ne Name Lithium Beryllium Boron Carbon Nitrogen Oxygen Fluorine Neon Atomic mass 6.941 9.012 10.811 12.011 14.007 15.999 18.998 20.180 (a) Name the elements in which both the shells are completely filled with electrons. (b) Name the element which has same number of electrons in both the shells. (c) Which is the most electropositive element in this period?$
Q.3 (v)3 marks $Explain on which factor the value of acceleration due to gravity 'g' depends.$
Q.3 (vi)3 marks $Explain the following terms: (a) Metallurgy (b) Ores (c) Gangue.$
Q.3 (vii)3 marks $Give the names of the following satellite series developed by India: (a) Satellite series actively working in the field of telecommunication, television and meteorological services. (b) Satellite series specially working in the field of education. (c) Satellite series to exactly locate position of any place on earth's surface.$
Q.3 (viii)3 marks $(a) What is meant by anomalous behaviour of water? (b) Explain the role of anomalous behaviour of water in preserving aquatic life in cold climate.$

Atomic number	3	4	5	6	7	8	9	10
Symbol	Li	Be	B	C	N	O	F	Ne
Name	Lithium	Beryllium	Boron	Carbon	Nitrogen	Oxygen	Fluorine	Neon
Atomic mass	6.941	9.012	10.811	12.011	14.007	15.999	18.998	20.180

Q.4

5 marks each · attempt any 1

Q.4 (i)5 marks $Observe the following diagram and answer the questions given below: (a) Identify the above diagram. (b) Write the principle on which the above appliance works. (c) Write the working of the above appliance. (d) Write the use of the above appliance.$
Q.4 (ii)5 marks $CH_4$