Questions

Q:

Which of the following vitamins are water soluble?

A) Vitamins B & C B) Vitamins K, D & C
C) Vitamins A, D & K D) Vitamins A, K, B, C & D
 
Answer & Explanation Answer: A) Vitamins B & C

Explanation:

Vitamins are essential nutrients found in foods. They perform specific and vital functions in a variety of body systems, and are crucial for maintaining optimal health.

 

The two different types of vitamins are fat-soluble vitamins and water-soluble vitamins.

 

Fat-soluble vitamins :

 Vitamins A, D, E and K — dissolve in fat before they are absorbed in the bloodstream to carry out their functions. Excesses of these vitamins are stored in the liver, and are not needed every day in the diet.

 

Water-soluble vitamins :

Vitamins dissolve in water and are not stored by the body. Since they are eliminated in urine, we require a continuous daily supply in our diet. The water-soluble vitamins include the vitamin B-complex group and vitamin C.

 

Water-soluble vitamins are easily destroyed or washed out during food storage or preparation.

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Filed Under: Chemistry
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Q:

Which of the following is malleable?

A) Ice B) Gold
C) Stone D) Pottery
 
Answer & Explanation Answer: B) Gold

Explanation:

Here in the given options, Gold is a malleable substance.

Malleable substance means a metal or a material able to be hammered or pressed into shape without breaking or cracking. i.e, tensile.

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Filed Under: Chemistry
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Q:

A Step-Up Transformer Increases

A) Power B) Current
C) Frequency D) Voltage
 
Answer & Explanation Answer: D) Voltage

Explanation:

A transformer that increases voltage from primary to secondary (more secondary winding turns than primary winding turns) is called a Step-Up Transformer.

Conversely, a transformer designed to do just the opposite is called a Step-Down Transformer. 

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Filed Under: Physics
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Q:

What color is Lobster blood?

A) Blue B) White
C) Red D) Colourless
 
Answer & Explanation Answer: A) Blue

Explanation:

Lobsters, like snails and spiders, have blue blood due to the presence of hemocyanin, which contains copper. In contrast, vertebrates and many other animals have red blood from iron-rich hemoglobin.

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Filed Under: Biology
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Q:

The food and drug administration sets standards for

A) product labeling B) traffic safety
C) advertising D) the environment
 
Answer & Explanation Answer: A) product labeling

Explanation:

The FDA is responsible for protecting and promoting public health through the control and supervision of food safety, tobacco products, dietary supplements, prescription and over-the-counter pharmaceutical drugs (medications), vaccines, biopharmaceuticals, blood transfusions, medical devices, electromagnetic radiation emitting devices (ERED), cosmetics, animal foods & feed and veterinary products.

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Filed Under: General Awareness
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Q:

Which day is observed as Rashtriya Ekta Diwas every year in India?

A) 31st July B) 31st March
C) 31st January D) 31st October
 
Answer & Explanation Answer: D) 31st October

Explanation:
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Q:

Give two ways of converting a two input NAND gate to an inverter.

Answer

One way is shorting the two inputs of the NAND gate and passing the input.


truth table:


A B output


1 1 0


0 0 1


The second way is passing the input to only one input (say A) of the NAND gate. Since the other input  (say B is floating, it is always logic one.


Truth table:


A B output


1 1 0 


0 1 1

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Subject: Hardware

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Q:

I am a 5 letter word.

I am normally below you. If you remove my 1st letter, you'll find me above you. If you remove my 1st & 2nd letters, you can't see me.

What am I?

Answer

Firstly, I focussed on "If you remove my 1st & 2nd letters, you can't see me". The first thing that comes to mind which we can’t see is the "AIR".


 


So now, what 4 letter words can be formed ending with "AIR"? Think of all the words from A to Z, considering which one lies above you. That is how we get to "HAIR".


 


Now, which 5 letter word can be formed ending with "HAIR"? Starting with A to Z, we reach "CHAIR" and also, it lies below us.


 


And the required answer is "CHAIR".

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