OSSSC TGT Prelims Mock Test - 8 - OTET MCQ

The correct answer is Methanoic acid.

• The acid present in an ant sting is Formic acid.
• Formic acid (systematically called methanoic acid) is the simplest carboxylic acid.
• Molecular formula: HCOOH
• It is quite fatal for those ants as after stinging, their stinger is lost and they forcibly release formic acid from their poison gland.

Important Points

• Oxalic acid is an organic compound found in many plants. These include leafy greens, vegetables, fruits, cocoa, nuts, and seeds
• Lactic acid is a natural organic acid, found in milk and other food products such as meat and beer.
  • It is used in the food industry as a preservative, flavor enhancer, and acid adjustment.
• Citric acid is found naturally in citrus fruits, like lemons and limes.
  • It gives them their tart, sour taste.

The Sal, a major species found in the forests of the Eastern Ghats, dominates the region north and north-east of the Brahmani River.

Small Finance Banks have the distinctive feature of not having any geographical restrictions. They primarily focus on basic banking activities and cater to unserved segments.

Alcohols have the functional group -OH (hydroxyl) attached to a carbon atom. This functional group is responsible for the characteristic properties of alcohols.

The process by which electromagnetic waves striking an object are assimilated by that object is called "Absorption." Different materials have varying absorptive capabilities, depending on the wavelength of radiation involved.

Hindi is predominantly spoken in Delhi.

Invented in 1937.

The Odisha State Poultry Products Co-operative Marketing Federation Ltd., or OPOLFED, is an apex poultry co-operative marketing organisation at the state level. Odisha's OPOLFED cooperative organisation promotes poultry products.

From the given question, by using Pythagoras theorem, we get,

We need to find 
⇒AB² + BC² + CD² + DE²  
By putting the value from the equation (1), we get,
⇒ AC² + CD² + DE²
⇒ By putting the value from the equation (2), we get,
⇒ AD2 + DE²
By putting the value from the equation (3), we get,
⇒ AE²
Hence, the correct answer is AE².

In a class there are 20 boys and 15 girls. The ratio of boys to girls is:
To find the ratio of boys to girls, we simply put the number of boys first, followed by the number of girls. So, it's 20 : 15. However, to simplify the ratio, we can find the greatest common divisor (GCD) of 20 and 15 and divide both numbers by it:

GCD of 20 and 15 is 5.
Divide both numbers by 5: 20 ÷ 5 = 4, 15 ÷ 5 = 3.
So, the simplified ratio is 4 : 3, which corresponds to option (a).

Hence, Option D is correct.

Reqd. time with 100% efficiency 

Hence, Option D is correct.

As we know that the angles are supplementary so sum of angles will be 180 degree.
Let us assume that the ratio factor is r.
According to question,
Angles are supplementary and have a ratio of 1:4.
r + 4r = 180
⇒ 5r = 180
⇒ r = 180/5
⇒ r = 36

Perimeter of a semicircle = πr + 2r

Hence, Option D is correct.

Let AB be the observation tower and h be its height.

Also, let the ship be at C when the angle of elevation is 30° and at D when the angle of elevation is 45°.

The time taken by the ship to travel from C to D is 10 minutes and we need to find out the time the ship will take to reach B from D.

∴ tan 30º = AB/CB = h / CB = 1/ √3

⇒ CB = √3 x h

∴ tan 45º = AB / DB = h / DB = 1

⇒ DB = h

⇒ CD = CB – DB = (√3h – h) = h(√3– 1)

Now, as h(√3 – 1) distance is covered in 10 minutes, a distance of h is covered in = 13.66 minutes = 13 minutes 40 seconds

d = -4, n = 7, a(n) = 4
a(n) = a + (n – 1) x d
a + (7 – 1) x (-4) = 4
a + 6 x (-4) = 4
a – 24 = 4
a = 4 + 24
a = 28

According to question,
A's weight is twice as much as of B.
1. A = 2B.
B's weight is four and half times as much as of C.
2. B = 4.5C
C's weight is half times as much as of D.
3. C = D/2.
D's weight is half as much as of E.
4. D = E/2.
E weight is less than A but more than C.
5. A > E > C
from 1 and 2
6. A = 2B = 9C
from 6 and 3
7. A = 2B = 9C = 4.5D
from 7 and 4
8. A = 2B = 9C = 4.5D = 2.25E
so from 8 and 5
A > B > E > D > C
E is heavier than D and C.

Given number: 7 8 3 4 3 2 9 5 1 3

After interchanging the digits,
New number: 8 7 4 3 2 3 5 9 3 1

6th digit from right end

At sunrise morning begins, similarly at sunset night begins.

Triangle, square and rhombus are shapes. Tangent is not.

To activate the previous cell in a pre-selected range, you need to press a specific key. Let's go through each option to find the correct key.
A: The Alt key
- The Alt key is not used to activate the previous cell in a pre-selected range. It has other functionalities in Excel, such as accessing the ribbon menu.
B: The Tab key
- The Tab key is used to move to the next cell in a pre-selected range, not the previous cell. Pressing Tab will move the cursor to the cell on the right.
C: The Enter key
- The Enter key is used to move to the cell below the current cell in a pre-selected range. It does not activate the previous cell.
D: None of these
- This is the correct answer. None of the options provided (Alt key, Tab key, Enter key) are used to activate the previous cell in a pre-selected range.
In conclusion, the correct key to activate the previous cell in a pre-selected range is not listed among the options provided. Therefore, the answer is D: None of these.

Quickest way to select the entire worksheet:

• Step 1: Open the worksheet you want to select.


• Step 2: Locate the rectangle box on the upper left corner where column headings and row headings meet.


• Step 3: Click on the rectangle box.

Explanation:

The quickest way to select the entire worksheet is to click on the rectangle box on the upper left corner where column headings and row headings meet. This box is known as the "Select All" box and it allows you to select the entire worksheet in just one click.

This method is faster than other options because it saves you the time and effort of manually selecting each column or row. By clicking on the "Select All" box, you instantly select the entire worksheet including all columns, rows, and cells.

Using this method, you can quickly perform tasks such as formatting, copying, or deleting the entire worksheet without having to individually select each element. It is a time-saving technique that is particularly useful when working with large worksheets.

Therefore, the correct answer is Option D: Click on the rectangle box on the upper left corner where column headings and row headings meet.

UNIX operating system is a/an ______.
UNIX operating system is an all of the above - a time sharing operating system, a multi-user operating system, and a multi-tasking operating system.
Time sharing operating system:
- UNIX allows multiple users to access the system simultaneously, with each user having their own terminal or session.
- The operating system efficiently allocates and manages system resources such as CPU time, memory, and peripherals among the users.
Multi-user operating system:
- UNIX supports multiple users accessing the system at the same time.
- Each user has their own user account, with their own files and processes.
- Users can concurrently perform tasks and share resources on the system.
Multi-tasking operating system:
- UNIX allows multiple processes to run concurrently.
- It manages the execution of multiple programs simultaneously, dividing the CPU time among them.
- Users can run multiple applications or tasks at the same time, improving overall system efficiency.
Summary:
UNIX is a versatile operating system that supports time sharing, multi-user, and multi-tasking capabilities. It allows multiple users to access the system simultaneously, runs multiple processes concurrently, and efficiently manages system resources.

Quick Way to Extend Numbers to a Longer Sequence
To extend a sequence of numbers to a longer range, such as from 1 to 20, you can follow these steps:
Method A: Drag and Fill Handle
1. Select both cells containing the initial numbers.
2. Place the cursor on the fill handle, which is a small square located at the bottom right corner of the selected cells.
3. Click and hold the left mouse button.
4. Drag the fill handle down for the desired number of rows or columns.
5. Release the mouse button to populate the range with the extended sequence.
Method B: Fill Option in the Edit Menu
1. Select the range where you want to extend the sequence, including the initial cells.
2. Go to the Edit menu at the top of the screen.
3. Hover over the "Fill" option.
4. Click on the "Down" option from the submenu.
5. The range will be populated with the extended sequence.
Method C: Paste Special
1. Copy the second cell that contains the number in the sequence.
2. Click on the cell below where you want to extend the sequence.
3. Look for the "Paste" button on the standard toolbar at the top of the screen.
4. Click on the down arrow next to the "Paste" button.
5. Select the "Paste Special" option from the dropdown menu.
6. The "Paste Special" dialog box will appear.
7. Choose the "Values" option and click "OK."
8. The range will be populated with the extended sequence.
Method D: All of These
- All of the methods mentioned above (A, B, and C) can be used to quickly extend a sequence of numbers to a longer range.
Using any of these methods will allow you to extend the numbers to a longer sequence, saving you time and effort in manually inputting each number.

The Asian Wrestling Championship 2024 is being held in Bishkek, Kyrgyzstan. In this championship, India's Udit won the silver medal in men's freestyle 57 kg. While Abhimanyu gave India the second medal in 70 kg.  

Invest India will host the 27th World Investment Conference (WIC) in New Delhi from December 11-14, 2023, providing a platform for global collaboration and discussions on shaping the future of investments.

The Matsya6000 is a manned submersible that is being developed by India's National Institute of Ocean Technology (NIOT). It is designed to reach a depth of 6,000 meters, which will make it one of the deepest-diving submersibles in the world. The Matsya6000 will be used to explore the deep ocean and study its resources, including minerals, marine life, and ecosystems.

Nigeria leads the global fight against meningitis, introducing the groundbreaking Men5CV vaccine, endorsed by WHO, targeting five strains in one shot. This surpasses previous vaccines, vital as bacterial meningitis, prevalent in Africa, poses serious health risks. Africa’s “meningitis belt,” including Nigeria, faces escalating cases, with a 50% rise reported last year by WHO. Nigeria’s pioneering move sets a precedent for broader adoption worldwide, marking a significant stride in public health.