Maharashtra State BoardSSC (English Medium) 9th Standard

SSC (English Medium) 9th Standard - Maharashtra State Board Question Bank Solutions for Science and Technology

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Science and Technology
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Complete the following table.

u (m/s) a(m/s2) s(m) v2 = u2 + 2 as (m/s)2
4 ____ 8
____ 5 8.4 10
[0.01] Laws of Motion
Chapter: [0.01] Laws of Motion
Concept: Motion and Rest

Distinguish between Weather and climate.

[0.09] Environmental Management
Chapter: [0.09] Environmental Management
Concept: Weather and Climate

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Write note.

Climatic factors

[0.09] Environmental Management
Chapter: [0.09] Environmental Management
Concept: Weather and Climate

Complete the statement using the given options and justify the statement. 

Of the abiotic factors that affect biodiversity by far the most important is ______.

[0.09] Environmental Management
Chapter: [0.09] Environmental Management
Concept: Weather and Climate

Complete the statement using the given options and justify the statements. 

A description of the climatic conditions of short duration in a particular area is ______.

[0.09] Environmental Management
Chapter: [0.09] Environmental Management
Concept: Weather and Climate

Complete the statement using the given options and justify the statement. 

Irrespective of the progress of human beings, we have to think about ______.

[0.09] Environmental Management
Chapter: [0.09] Environmental Management
Concept: Weather and Climate

Complete the statement using the given options and justify the statement. 

Establishments where various climatic factors are recorded are called ______.

[0.09] Environmental Management
Chapter: [0.09] Environmental Management
Concept: Weather and Climate

Complete the following Chemical reaction. 

 ........+....... → CO2 + 2H2O + Heat

[0.13] Carbon : An Important Element
Chapter: [0.13] Carbon : An Important Element
Concept: Carbon: a Versatile Element

Complete the following Chemical reaction.

2 NaOH + CO2 → ........+........ 

[0.13] Carbon : An Important Element
Chapter: [0.13] Carbon : An Important Element
Concept: Carbon: a Versatile Element

Complete the following Chemical reaction.

..........+......... →CH3Cl + HCl

[0.13] Carbon : An Important Element
Chapter: [0.13] Carbon : An Important Element
Concept: Carbon: a Versatile Element

Complete the following table.

u (m/s) a (m/s2) t (sec) v = u + at (m/s)
2 4 3 ____
____ 5 2 20
[0.01] Laws of Motion
Chapter: [0.01] Laws of Motion
Concept: Motion and Rest

Complete the following table.

 u (m/s)  a (m/s2)   t (sec)  s = ut + `1/2`at2 (m)
5 12 3 ____
7 ____ 4 92
[0.01] Laws of Motion
Chapter: [0.01] Laws of Motion
Concept: Motion and Rest

Give reason for the following. 

Hydronium ions are always in the form H3O+.

[0.05] Acids, Bases and Salts
Chapter: [0.05] Acids, Bases and Salts
Concept: Ionic Compounds

Write down the changes that will be seen in the instance and explain the reason behind it. 

Magnesium oxide was added to dilute HCl and magnesium oxide was added to dilute NaOH. 

[0.05] Acids, Bases and Salts
Chapter: [0.05] Acids, Bases and Salts
Concept: Ionic Compounds

Give examples of the importance of climate in the living world with explanations, in your own words.

[0.09] Environmental Management
Chapter: [0.09] Environmental Management
Concept: Importance of Weather in the Living World

Water in the waterfall flows from a higher level to the lower level because of ____________.

[0.03] Current Electricity
Chapter: [0.03] Current Electricity
Concept: Potential and Potential Difference

The differences between the electrostatic potential of the positive end the negative end of an electric cell is the __________ of the cell.

[0.03] Current Electricity
Chapter: [0.03] Current Electricity
Concept: Potential and Potential Difference

Three electric cells of potential difference 1.5 V each have been connected as a battery. The potential differences of the battery will be ________ V.

[0.03] Current Electricity
Chapter: [0.03] Current Electricity
Concept: Potential and Potential Difference

Electric cells having 2 V potential difference each have been connected in the form of a battery. What will be the total potential difference of the battery in both cases ?

(i)  

(ii) 

[0.03] Current Electricity
Chapter: [0.03] Current Electricity
Concept: Potential and Potential Difference

Give scientific reasons.
It is easier to stop a tennis ball as compared to a cricket ball when both are travelling with the same velocity.

[0.01] Laws of Motion
Chapter: [0.01] Laws of Motion
Concept: Speed and Velocity
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