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Q:

Please enter the Missing number: 4 8 14 22 ?

A) 28 B) 32
C) 46 D) 36
 
Answer & Explanation Answer: B) 32

Explanation:

Here the given series follows a pattern that,

2- 0 = 4  

3- 1 = 8  

4- 2 = 14

5- 3 = 22

6- 4 = 32

Hence, the missing number is 32

 

 

Method 2 ::

The difference between 4 and 8 is 4, the difference between 8 and 14 is 6, the difference between 14 and 22 is 8. So the next difference between 22 and the next number will be 10 since it follows (4,6,8,10 - add +2 each time)

Hence, 22 + 10 = 32 is the missing number.

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Q:

Which of the following is an Autoimmune disease?

A) Systematic lupus erythematosus B) Acute anaphylaxis
C) Farmer's lung D) A heart attack
 
Answer & Explanation Answer: A) Systematic lupus erythematosus

Explanation:

An autoimmune disease is a condition in which your immune system mistakenly attacks your body.

 

The immune system normally guards against germs like bacteria and viruses. When it senses these foreign invaders, it sends out an army of fighter cells to attack them. Normally, the immune system can tell the difference between foreign cells and your own cells.

 

In an autoimmune disease, the immune system mistakes part of your body — like your joints or skin — as foreign. It releases proteins called autoantibodies that attack healthy cells. Some autoimmune diseases target only one organ. Type 1 diabetes damages the pancreas. Other diseases, like lupus, affect the whole body.

 

Hence, Systematic lupus erythematosus is an autoimmune disease that affects multiple organs.

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Q:

Which of the following is a false statement?

A) As bond order increases the strength of the bond increases B) Bond order is proportional to the bond length
C) Molecules with negative bond order are highly unstable D) Bond order is inversely proportional to the bond length
 
Answer & Explanation Answer: B) Bond order is proportional to the bond length

Explanation:

Bond order is proportional to the bond length is a False statement since Bond order is inversely proportional to the bond length.

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Q:

Which of the following is an example of chemical weathering?

A) Oxidation B) Acid rains
C) Carbonation D) All the above
 
Answer & Explanation Answer: D) All the above

Explanation:

Chemical weathering is what happens when rocks are broken down and chemically altered.

Chemical weathering is the breakdown of rocks by chemical reactions. Chemical weathering involves changes in the chemical composition of the existing rock to form new rock. Some examples of chemical weathering are hydrolysis, oxidation, carbonation, dissolution, etc.

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Q:

Which of the following is not an Input device?

A) Joystick B) Headphones
C) Mouse D) Scanner
 
Answer & Explanation Answer: B) Headphones

Explanation:

Here Joystick, Mouse and Scanner are Input devices through which data is given to the computers. But Headphones are output devices through which sound comes as an output from the computer or any devices.

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Q:

Which of the Following is an Amorphous solid?

A) Quartz Glass(Sio2) B) Chrome Alum
C) Silicon Carbide(SiC) D) Graphite
 
Answer & Explanation Answer: A) Quartz Glass(Sio2)

Explanation:

An amorphous or non-crystalline solid is a solid that lacks the long-range order that is characteristic of a crystal. In Brief, An amorphous solid is any noncrystalline solid in which the atoms and molecules are not organized in a definite lattice pattern. Such solids include glass, plastic, and gel.

Quartz glass (SiO2) is an amorphous solid due to its short range order of constituent particles. Note Quartz is a crystalline solid while quartz glass is an amorphous solid.

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Q:

5 Digits Number?

What 5-digit number has the following features:

If we put the numeral 1 at the beginning, we get a number three times smaller than if we put the numeral 1 at the end of the number.

Answer

We can make an equation:


3(100000 + x) = 10x+1


(Why? Well, adding 100000 puts a 1 at the front of a five-digit number, and multiplying by 10 and adding 1 puts a 1 at the end of a number)


Solving this gives:


10x+1 = 3(100000 + x)
10x+1 = 300000 + 3x
10x = 299999 + 3x
7x = 299999
x = 299999/7 = 42857


The answer is 42857 (142857 is three times smaller than 428571).

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Q:

Ajay who is a King, at his eleventh hour, called his three queens and distributed his gold in the following way: He gave 50% of his wealth to his first wife, 50% of the rest to his second wife and again 50% of the rest to his third wife. If their combined share is worth1,30,900 kilograms of gold, find the quantity of gold King Ajay was having initially?

A) 153145 kgs B) 147890 kgs
C) 152400 kgs D) 149600 kgs
 
Answer & Explanation Answer: D) 149600 kgs

Explanation:

Let the total quantity of gold be p kgs.

According to the question,

50% of p + 25% of p + 12.5% of p = 130900

87.5% of p = 130900

p = 130900 x 100/87.5  = 149600 kgs.

 

Therefore, the initial gold quantity that king has = p = 149600 kgs.

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