Exams


Q:

Why are hydrocarbons insoluble in water?

Answer

We know that polar substances are soluble in polar solvents and non polar substances are soluble in non-polar solvents only. Here the hydrocarbons are non-polar molecular substances and water is a polar solvent. So water can't dissolve hydrocabons.


 


Hence, as hydrocarbons are non-polar substances, they are insoluble in water as it is a highly polar solvent. 

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Subject: Chemistry Exam Prep: AIEEE , Bank Exams
Job Role: Analyst , Bank Clerk , Bank PO

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Q:

Give an investment of $13200,compound amount of $22680.06 invested for 8 years,what is the interest rate if interest rate is compounded anually?

A) 6% B) 5%
C) 7% D) 8%
 
Answer & Explanation Answer: C) 7%

Explanation:

M = p(1+i)^n

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Filed Under: Compound Interest
Exam Prep: Bank Exams
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0 4193
Q:

Atomic mass of first 30 elements?

Answer

Here I give you the first 30 Atomic elements names and their Atomic masses.


 


Atomic number      Element        Atomic mass
                             


        1                 Hydrogen           1


        2                  Helium              4


        3                 Lithium              6.94


        4                Beryllium            9.01


        5                  Boron               10.81


        6                Carbon               12.01


        7                Nitrogen             14.01


        8                Oxygen              15.99


        9                Fluorine              19.00


       10                Neon                 20.18


       11               Sodium               22.99


       12             Magnesium           25.31


       13             Aluminium            26.98


       14               Silicon                28.09


       15             Phosphorus           30.97


       16               Sulphur               32.07


       17               Chlorine              35.45


       18                Argon                 39.95


       19             Potassium              39.10


       20              Calcium                40.08


       21             Scandium              44.96


       22             Titanium               47.87


       23            Vanadium              50.94


       24             Chromium            24. 52


       25            Manganese            54.94


       26                Iron                  55.85


       27              Cobalt                 58.93


       28               Nickel                 58.69


       29              Copper                 63.55


       30                Zinc                   65.41

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Subject: Chemistry Exam Prep: AIEEE , Bank Exams , CAT , GATE
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2 4192
Q:

Which nutrient has forms most of our body weight?

A) Water B) Fats
C) Carbohydrates D) Proteins
 
Answer & Explanation Answer: A) Water

Explanation:

Water is the important nutrient all organisms need. Humans has almost 60% of their body weight is water. Some organisms have 90% of their body weight is of water.

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Filed Under: Biology
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14 4192
Q:

I shrink smaller every time I take a bath.

What am I ?

Answer

A Soap.


Yes, it gets shrinks smaller every time we take a bath.

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2 4191
Q:

Which of the following refers to the fastest, biggest, and most expansive computer?

A) Personal computer B) Super computer
C) Laptop D) None of these
 
Answer & Explanation Answer: B) Super computer

Explanation:
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Filed Under: Computer
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Q:

How many medals has been bagged by Indian athletes at World Dwarf Games 2017 ?

A) 34 B) 37
C) 39 D) 40
 
Answer & Explanation Answer: B) 37

Explanation:
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Filed Under: Sports
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Q:

Inhabit most nearly means

A) Vacate B) Move
C) Reside D) Leave
 
Answer & Explanation Answer: C) Reside

Explanation:

Inhabit means a place or environment to live in for a person or animal or a group.

 

Vacate, move and reside means to leave a place and are opposite to live. Reside is the only word most nearly means as inhabit.

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Filed Under: English
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