DSE Odisha TGT Science PCM Mock Test - 8 - OTET MCQ

Grid Corporation of Odisha Limited (GRIDCO) was established on 20^th April, 1995, as a wholly owned government of Odisha undertaking under the Companies Act, 1956.

The Indian Air Force is primarily responsible for securing Indian airspace, conducting aerial operations, and providing air support to ground forces.

Talcher Coalfield is located in Angul district in the Indian state of Odisha, in the valley of the Brahmani.

The Peacock was declared the national bird of India in 1963. Known for its royal grace and stunning beauty, the peacock is a symbol of elegance.

Mamta G Sagar, a Kannada poet, won the World Literary Prize for her significant contributions to literature, as recognized by the World Organization of Writers during the first Congress of WOW in Nigeria. This award highlights her achievements in winning international literature prizes.

Rajaraja I laid the foundation of the Chola navy's greatness and conquered Kurga, the entire Malabar coast, and part of Ceylon.

Let AB be the post and AC be its shadow.
Let AB = X m. Then, AC = √3Xm.Let∠ACB = θ.
AB/AC = tanθ => tanθ = X/√3X = 1/√3 = tan30°.
∴ θ = 30°.
Hence, the point of rise is 30°.

Height of the triangle = √(13² – 12²) = 5 meters


Hence, Option A is correct.

Height of an equilateral triangle

Hence, Option A is correct.

Let AB be the light house and the two boats be at C and D

∴ AB = 125 m

tan30° = BC/AB = x/125 = 1/3

=> x = 72.17 m

tan45° = BD/AB = y/125 = 1

=> y = 125 m

∴ The distance between the two boats is = x + y

= 72.17 + 125

= 197.17 m

πr² + 2πr = 704
πr(r + 2) = 704

r × (r + 2) = 224
r = 14
So the answer

Hence, Option C is correct.

The Name box in Excel is a useful tool that allows users to easily navigate and reference specific cells or ranges within a worksheet. Here is a detailed explanation of the Name box and its features:
Definition of the Name box:
The Name box is a designated area in Excel where users can see and enter the names of cells or ranges. It is located to the left of the formula bar, making it easily accessible for users to interact with.
Features of the Name box:
1. Shows location of the previously active cell: When a user selects a cell or range, the Name box displays the address of the previously active cell. This is helpful for users to keep track of their current position within the worksheet.
2. Appears at the left of the formula bar: The Name box is positioned to the left of the formula bar in Excel. This placement ensures that users can quickly locate and utilize the Name box while working with formulas and functions.
3. Allows users to enter names for cells or ranges: Users can also manually enter names for cells or ranges directly into the Name box. This feature enables users to create custom names for specific cells or ranges, making it easier to reference them in formulas or data analysis.
4. Provides a dropdown list of named cells or ranges: The Name box includes a dropdown list that displays all the named cells or ranges within the current workbook. Users can select a name from this list to navigate directly to the corresponding cell or range.
5. Facilitates quick navigation within a worksheet: By entering a cell or range name into the Name box, users can instantly move their active cell to the specified location. This feature eliminates the need for manual scrolling and clicking, making navigation more efficient.
In conclusion, the Name box in Excel serves as a valuable tool for navigating, referencing, and managing cells or ranges within a worksheet. Its placement, functionality, and user-friendly features make it an essential component of Excel's interface.

Shortcut Key to Insert Current Date in a Cell:
To insert the current date in a cell in Microsoft Excel, you can use a shortcut key combination. The correct shortcut key to achieve this is CTRL ;.
Here's a detailed explanation:
1. Open Microsoft Excel and navigate to the desired worksheet.
2. Click on the cell where you want to insert the current date.
3. Press the CTRL key on your keyboard and hold it down.
4. While still holding down the CTRL key, press the ; (semicolon) key.
5. Release both keys.
6. The current date will be inserted into the selected cell.
Note: The inserted date will remain static and will not automatically update to the current date unless you manually refresh it.
Additional Shortcut Keys:
In addition to the shortcut key mentioned above, here are a few other helpful shortcuts in Microsoft Excel:
- CTRL D: This shortcut is used to fill down the contents of the selected cell or cells from the cell above.
- CTRL T: This shortcut is used to create a new table from the selected data range.
- CTRL /: This shortcut is used to start a comment in the active cell.

Remember to use the appropriate shortcut key based on the specific action you want to perform in Microsoft Excel.

Shortcut Key to Hide Entire Column in Excel:
To hide an entire column in Excel, you can use the following shortcut key:
Answer: B - CTRL 0
Here is a detailed explanation of the shortcut key:
1. CTRL: This key is the Control key on your keyboard.
2. 0: This is the number zero key on your keyboard.
To hide an entire column using the CTRL 0 shortcut key, follow these steps:
1. Select the column: Click on the header of the column you want to hide. The entire column should be highlighted.
2. Press CTRL 0: While the column is selected, press the CTRL key on your keyboard, followed by the number zero key (0).
Important Points to Note:
- This shortcut key hides the entire column, including all the cells and data within that column.
- The hidden column is not deleted, it is just hidden from view.
- To unhide a column, you can use the CTRL SHIFT 0 shortcut key.
Summary:
The shortcut key to hide an entire column in Excel is CTRL 0. This allows you to quickly hide columns in your spreadsheet without deleting them. Remember to select the column first and then press CTRL 0 to hide it.

Hyperlinks cannot be:
1. Special shapes like stars and banners:
- Hyperlinks cannot be applied directly to special shapes like stars and banners.
- These shapes can be included in a webpage design, but they cannot function as clickable hyperlinks.
- To create a hyperlink, you need to use anchor tags () and specify the target URL.
2. Drawing objects like rectangles and ovals:
- Similar to special shapes, drawing objects like rectangles and ovals cannot be hyperlinks on their own.
- These objects can be used for visual design purposes, but they do not have the inherent ability to link to other web pages or resources.
- To make them clickable, you need to wrap them with anchor tags and specify the target URL.
3. Pictures:
- Pictures or images can be hyperlinks, but they are not inherently hyperlinks themselves.
- To make a picture clickable, you need to wrap it with an anchor tag and specify the target URL.
- This allows users to click on the picture and be redirected to the specified web page.
4. All can be hyperlinks:
- This statement is incorrect.
- Special shapes, drawing objects, and pictures cannot be hyperlinks on their own.
- However, by using anchor tags and combining them with these elements, they can become clickable hyperlinks.
In summary, while special shapes, drawing objects, and pictures cannot be hyperlinks by themselves, they can be made clickable when combined with anchor tags and specifying the target URLs.

Learning disabilities may occur due to all of the following except cultural factors as they do not affect learning disability.

Homework is what children do at home on their own. As children learn to do things on their own, they do again and again that makes them perfect and understand the concepts clearly and can explain it in their own words, but the thing that children are not social with people or not interacting with others. That's why the socialization process is an important skill in the life of a learner.
Hence, the correct answer is "Homework".

'Education-of-all-in-schools-for-all' is a tagline for Inclusive education.
Inclusive education is a platform that promotes and believes that every child should get equal opportunity irrespective of caste, creed, colour, religion and whether a child is a normal or special case. 
It mainly focuses on providing education to special children, along with children with non-special needs. It welcomes special-needs children to promote equality.
Hence, the correct answer is, 'Inclusive education.

Development refers to functional or non-organic changes and is usually qualitative. The development of the brain plays the most important role in human life. The brain of a child is almost completely developed by the first five years.

Teaching is objective-centered. The needs of the learners are an important factor in managing a classroom. Teaching results when the teacher does any activity with the intention that his/her learners would learn something as a result of it.

All languages will be taught with high quality to all students; a language does not need to be the medium of instruction for it to be taught and learned well. The teaching of all languages will be enhanced through innovative and experiential methods, including through gamification and apps, by weaving in the cultural aspects of the languages - such as films, theatre, storytelling, poetry, and music - and by drawing connections with various relevant subjects and with real-life experiences.

Key Points

•  In addition to high-quality offerings in Indian languages and English, foreign languages, such as Korean, Japanese, Thai, French, German, Spanish, Portuguese, and Russian, will also be offered at the secondary level, for students to learn about the cultures of the world and to enrich their global knowledge and mobility according to their own interests and aspirations.
• It can be studied as an additional option.

Thus, it is concluded that National Education Policy (NEP) 2020 recommends the study of foreign languages as additional options at the secondary stage.

Concave lens and convex mirror are diverging in nature. They form virtual and erect images.

Light from each point on a luminous object travels outward in all directions in straight lines. Light travels at very high speeds, but is not instantaneously everywhere. Light from a point object travels indefinitely until it collides with matter in its path to be partially absorbed and reflected.

Initial unpolarized intensity is 2a² 
the intensity of light transmitted by the first polarizered will be I_unpolarized/2​​=a²
option A is correct

The molecules of air and other fine particles in the atmosphere have a size smaller than the wavelength of visible light. These particles are more effective in scattering light of a shorter wavelength at the blue end than the light of the longer wavelengths at the red end. The red light has a wavelength 1.8  times greater than blue light. Thus, when sunlight passes through the atmosphere, the fine particles in the air scatter the blue color more strongly than red color. The scattered blue light enters our eyes and we see the blue color of the clear sky.

The permeability of free space, μ0, is numerically equal to 4π x 10-7. For air and other non-magnetic materials, the absolute permeability is the same constant. For magnetic materials, absolute permeability is not a fixed constant but varies non-linearly with the flux density.

+3 charge means no of electrons will be 3 less than no. of protons. So no. of protons will be 21. So atomic no. is 21.

Κ = G x cell constant and G = 1/R.

When l = 3, magnetic quantum number has 7 values m_l = (2l + 1). These values are represented as -3, -2, -1, 0, +1, +2, +3

Spin angular momentum of the electron, a vector quantity can have two orientations relative to the chosen axis. These two orientations take the values of +1/2 or -1/2 and are called two spin states of the electrons.