Date & Time: 28th March 2022, 10:30 am
Duration: 2h15m
General Instructions :
- All questions are compulsory.
- Use of a calculator is not allowed.
- The numbers to the right of the questions indicate fu ll 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 a subquestion number is to be written as an answer.
For Eg. : (i) (A), (ii) (B), (iii) (C) - Scientifically correct, labelled diagrams should be drawn wherever necessary.
Gold plated ornaments is the example of ______.
Electroplating
Alloying
Anodizing
Galvanizing
Chapter: [0.03] Chemical Reactions and Equations [0.08] Metallurgy
The functioning of the satellite launch vehicle is based on ______.
Newton's first law of motion
Newton's second law of motion
Newton's third law of motion
Newton's universal law of gravitation
Chapter: [0.1] Space Missions
_______ is one of the combustible components of L.P.G.
Methane
Ethane
Propane
Butanol
Chapter: [0.09] Carbon Compounds
The power of a convex lens of focal length 25 cm is ______.
4.0 D
0.25 D
−4.0 D
−0.25 D
Chapter: [0.07] Lenses
______ colour is deviated the least in the spectrum of white light obtained with a glass prism.
Red
Yellow
Violet
Blue
Chapter: [0.06] Refraction of Light
Find the odd one out:
INSAT
GSAT
IRS
PSLV
Chapter: [0.1] Space Missions
Complete the correlation:
Group 1 : Alkali metals : : ______ : Halogens.
Chapter: [0.02] Periodic Classification of Elements
Match the correct pair:
| Column ‘A’ | Column ‘B’ |
| Refractive index of water | (a) 1.31 |
| (b) 1.36 | |
| (c) 1.33 |
Chapter: [0.06] Refraction of Light [0.17] Wonders of Light 2
State whether the following statement is true or false.
An electric motor converts mechanical energy into electrical energy.
True
False
Chapter: [0.04] Effects of Electric Current [0.15] All about Electromagnetism
Write the IUPAC name for the following structural formula:
\[\begin{array}{cc}
\ce{CH3-CH-CH3}\\
|\phantom{..}\\
\ce{OH}
\end{array}\]
Chapter: [0.09] Carbon Compounds
Write scientific reason.
Atomic radius goes on increasing down a group.
Chapter: [0.02] Periodic Classification of Elements
Give scientific reason.
Simple microscope is used for watch repairs.
Chapter: [0.07] Lenses [0.16] Wonders of Light 1
Give scientific reason.
It is reccommended to use air tight container for storing oil for long time.
Chapter: [0.03] Chemical Reactions and Equations [0.12] The Magic of Chemical Reactions
An object takes 5 s to reach the ground from a height of 5 m on a planet. What is the value of g on the planet?
Chapter: [0.01] Gravitation
Draw a neat labelled diagram of Hope's Apparatus.
Chapter: [0.05] Heat
State the laws of refraction of light.
Chapter: [0.06] Refraction of Light [0.17] Wonders of Light 2 [0.17] Wonders of Light 2
Name the following: Main ore of aluminium.
Chapter: [0.08] Metallurgy
What impurities are present in aluminium ore?
Chapter: [0.08] Metallurgy
Observe the given figure of Fleming's Left Hand Rule and write the labels of 'A' and 'B':
Chapter: [0.04] Effects of Electric Current [0.15] All about Electromagnetism
What are the demerits of Mendeleev’s periodic table?
Chapter: [0.02] Periodic Classification of Elements [0.11] School of Elements
Observe the given figure showing the orbit of a planet moving around the Sun and write the three laws related to it:
The orbit of a planet moving around the Sun
Chapter: [0.01] Gravitation
Identify the type of chemical reaction given below:
\[\ce{CuSO4 + Fe -> FeSO4 + Cu}\]
Chapter: [0.03] Chemical Reactions and Equations [0.12] The Magic of Chemical Reactions
Identify the type of chemical reaction given below:
\[\ce{2Mg + O2 -> 2MgO}\]
Chapter: [0.03] Chemical Reactions and Equations [0.12] The Magic of Chemical Reactions
Identify the type of chemical reaction given below:
\[\ce{2KClO3 -> 2KCl + 3O2 ^}\]
Chapter: [0.03] Chemical Reactions and Equations
If in a medium, the speed of light is 1.5 × 108 m/s how much will the absolute refractive index of that medium be?
Chapter: [0.06] Refraction of Light [0.17] Wonders of Light 2
Read the following paragraph and answer the questions based on it.
|
If heat is exchanged between a hot and cold object, the temperature of the cold object goes on increasing due to gain of energy and the temperature of the hot object goes on decreasing due to loss of energy. The change in temperature continues till the temperatures of both the objects attain the same value. In this process, the cold object gains heat energy and the hot object loses heat energy. If the system of both the objects is isolated from the environment by keeping it inside a heat resistant box, then no energy can flow from inside the box or come into the box. |
- Heat is transferred from where to where?
- Which principle do we learn about from this process?
- How will you state the principle briefly?
Chapter: [0.05] Heat
Complete the following table for convex lens:
| Sr. No. | Position of the object | Position of the image | Nature of the image |
| 1. | Beyond 2F1 | __________________ | ________________________ |
| 2. | __________________ | At infinity | ________________________ |
| 3. | __________________ | __________________ | Real, inverted and enlarged |
Chapter: [0.07] Lenses [0.16] Wonders of Light 1
Explain the term of Ores .
Chapter: [0.08] Metallurgy
Explain the term Gangue .
Chapter: [0.08] Metallurgy
State the importance of Space Missions.
Chapter: [0.1] Space Missions
Observe the following diagram and answer the questions given below:
- Identify the above diagram.
- Write the principle on which the above appliance works.
- Write the working of the above appliance.
- Write the use of the above appliance.
Chapter: [0.04] Effects of Electric Current
Identify saturated and unsaturated hydrocarbons from the given structural formula:
| \[\begin{array}{cc} \phantom{}\ce{H}\phantom{..}\ce{H}\phantom{}\\ \phantom{}|\phantom{...}|\phantom{}\\ \ce{H-C-C-H}\\ \phantom{}|\phantom{...}|\phantom{}\\ \phantom{}\ce{H}\phantom{..}\ce{H}\phantom{} \end{array}\] |
\[\begin{array}{cc} \phantom{..}\ce{H}\phantom{........}\ce{H}\phantom{.}\\ \phantom{.}\backslash\phantom{......}/\phantom{}\\ \ce{C = C}\\ \phantom{}/\phantom{......}\backslash\phantom{}\\ \phantom{}\ce{H}\phantom{........}\ce{H}\phantom{} \end{array}\] |
| (1) | (2) |
Chapter: [0.09] Carbon Compounds
Draw electron dot structure for the following:
\[\begin{array}{cc}
\phantom{}\ce{H}\phantom{..}\ce{H}\phantom{}\\
\phantom{}|\phantom{...}|\phantom{}\\
\ce{H-C-C-H}\\
\phantom{}|\phantom{...}|\phantom{}\\
\phantom{}\ce{H}\phantom{..}\ce{H}\phantom{}
\end{array}\]
Chapter: [0.09] Carbon Compounds
Draw electron dot structure for the following:
\[\begin{array}{cc}
\phantom{..}\ce{H}\phantom{........}\ce{H}\phantom{.}\\
\phantom{.}\backslash\phantom{......}/\phantom{}\\
\ce{C = C}\\
\phantom{}/\phantom{......}\backslash\phantom{}\\
\phantom{}\ce{H}\phantom{........}\ce{H}\phantom{}
\end{array}\]
Chapter: [0.09] Carbon Compounds
Define Homologous series.
Chapter: [0.09] Carbon Compounds
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