SSC (English Medium)
SSC (Marathi Semi-English)
Academic Year: 2022-2023
Date & Time: 26th July 2023, 11:00 am
Duration: 2h
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Note:
- All the questions are compulsory.
- Use of a calculator is not allowed.
- The numbers to the right of the questions indicate full marks.
- In case of MCQs [Q. No. 1(A)] only the first attempt will be evaluated and will be given credit.
- For each MCQ, the correct alternative (A), (B), (C) or (D) with the subquestion number is to be written as an answer.
For e.g.: (i) (A), (ii) (B), (iii) (C) - Scientifically correct, labelled diagrams should be drawn wherever necessary.
______ has the highest refractive index.
Air
Water
Glass
Diamond
Chapter:
The left hand side of a chemical reaction represents ______.
Product
Reactants
Catalyst
Indicator
Chapter:
In ______ block of the modern periodic table non-metals are found.
s-block
d-block
p-block
f-block
Chapter:
The chemical reaction in which two or more products are formed from a single reactant is called ______ reaction.
decomposition
combination
displacement
double displacement
Chapter: [3] Chemical Reactions and Equations [12] The Magic of Chemical Reactions
If the refractive index of glass with respect to air is `3/2`, the refractive index of air with respect to glass is ______.
`1/2`
3
`1/3`
`2/3`
Chapter:
Find the odd man out:
Camera
Telescope
Peephole in door
Microscope
Chapter:
Find the correlation:
Resistance : Ohm :: Potential difference : ______
Chapter:
Write the defect of eye from the given figure:
Chapter:
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Give a scientific reason.
Tungsten metal is used to make a solenoid type coil in an electric bulb.
Chapter: [4] Effects of Electric Current [14] The Electric Spark
Give a scientific reason.
Simple microscope is used for watch repairs.
Chapter: [7] Lenses [16] Wonders of Light 1
Write a scientific reason.
Metallic character goes on decreasing while going from left to right in a period.
Chapter: [2] Periodic Classification of Elements
Write the IUPAC name of the following structural formula:
\[\begin{array}{cc}
\ce{CH3 - CH - CH3}\\
|\phantom{..}\\
\ce{OH}\\
\end{array}\]
Chapter:
Write the IUPAC name of the following structural formula:
\[\begin{array}{cc}
\ce{CH3 - CH2 - CH2 - CH - CH3}\\
\phantom{............}|\\
\phantom{............}\ce{Cl}\\
\end{array}\]
Chapter:
An iron ball of mass 5 kg is released from a height of 125 m and falls freely to the ground. Assuming that the value of g is 10 m/s2, calculate time taken by the ball to reach the ground.
Chapter:
Draw the image formed by convex lens, if object is placed at 2F1.
Chapter:
Why does the apparent position of stars keep changing a bit?
Chapter:
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Identify the process given below and accordingly draw neat labelled diagram:
A molten mixture of alumina (melting point > 2000°C) is done in a steel tank. The tank has a graphite lining on the inner side. The lining does the work of cathode. A set of graphite rods dipped in the molten electrolyte works as anode. Cryolite (Na3AlF6) and flurospar (CaF2) are added in the mixture to lower its melting point upto 1000°C.
Chapter:
With reference to the given diagram, answer the following questions:
- Give type of chemical reaction.
- Give the names of reactants and products.
- Write down the balanced chemical equation.
Chapter:
What is meant by "electric power"?
Chapter: [14] The Electric Spark
Derive the unit of electric power from the given equations:
P = V × `square`
P = `square` × ampere
= 1 volt × 1`square` = `(1 "J")/(1 "C") xx (1 "C")/(1 "s")`
∴ P = `(1 "J")/square` = W(Watt).
Chapter:
The electronic configuration of an element X is 2, 8, 8, 2.
- What is the atomic number of element X?
- To which group does this element belong?
- In which period does this element lie?
Chapter:
What is the contribution of India in space technology?
Chapter:
Observe the given diagram and answer the following questions:
- What is refraction of light?
- Name the emergent ray.
- Which two angles are equal?
Chapter:
Observe the given diagram and answer the following questions:
- What is the name of the given apparatus?
- Which phenomenon is studied with the help of this apparatus?
- Which are the final temperatures in thermometers T1 and T2?
- At what temperature the density of water maximum?
- Give one example of the above phenomenon in nature.
Chapter:
Observe and write the answers to the questions given below:
| I. \[\begin{array}{cc} \ce{H}\phantom{...}\ce{H}\\ |\phantom{....}|\\ \ce{H - C - C - H}\\ |\phantom{....}|\\ \ce{H}\phantom{...}\ce{H}\\ \end{array}\] |
II. \[\begin{array}{cc} \ce{H}\phantom{.........}\ce{H}\\ \backslash\phantom{.......}/\\ \ce{\phantom{.}C \phantom{.}= \phantom{.} C\phantom{.}}\phantom{.}\\ /\phantom{.......}\backslash\\ \ce{H}\phantom{.........}\ce{H}\\ \end{array}\] |
- Write the names of compound I and II.
- Draw electronic-dot structure for I and II.
- Which one of the above structures is saturated compound and unsaturated compound?
Chapter:
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