Questions

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

Report Error

View answer Workspace Report Error Discuss

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

2 4256
Q:

DNA is made of repeating units called

A) Nucleotides B) Ribozomes
C) Peptides D) Aminoacids
 
Answer & Explanation Answer: A) Nucleotides

Explanation:

DNA is a very long chain polymer made up of thousands of repeating units called nucleotides.

 

Nucleotide Unit is composed of a phosphate group, a pentose sugar, and a nitrogenous base.

 

The sides of the DNA ladder are made up of alternating deoxyribose sugar -- phosphate group units.

Report Error

View Answer Report Error Discuss

Filed Under: Biology
Exam Prep: AIEEE , Bank Exams , CAT , GATE
Job Role: Analyst , Bank Clerk , Bank PO , Database Administration , IT Trainer

3 4255
Q:

Atomic weight of an element is given by

A) sum of neutrons and electrons B) sum of neutrons and protons
C) only neutrons D) only protons
 
Answer & Explanation Answer: A) sum of neutrons and electrons

Explanation:

Atomic weight=number of neutrons+number of protons

Report Error

View Answer Report Error Discuss

Filed Under: Chemistry

7 4255
Q:

India was partitioned as a consequence of the formula contained in 

A) Cabinet Mission Plan B) Attlee's Declaration
C) June 3 plan or Mountbatten plan D) Both (b) and (c)
 
Answer & Explanation Answer: C) June 3 plan or Mountbatten plan

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Indian History

2 4255
Q:

Who of the following is a football player?

A) Fernando Alonso B) Kimi Raikkonen
C) Lewis Hamilton D) Nicolas Anelka
 
Answer & Explanation Answer: D) Nicolas Anelka

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Sports

14 4255
Q:

Which monument is known as "The National Monument of India"?

A) India Gate B) Gateway of India
C) Raj Ghat D) Red fort
 
Answer & Explanation Answer: A) India Gate

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Famous Places

7 4254
Q:

What charge card, developed in 1950, was the first to be approved nationally in the US?

A) Discover B) MasterCharge
C) Visa D) Diner's Club
 
Answer & Explanation Answer: D) Diner's Club

Explanation:

 

The card was established by Frank McNamara and Ralph Schneider.

Report Error

View Answer Report Error Discuss

Filed Under: Inventions

4 4254
Q:

A Radioactive subatance emits

A) alpha particles B) beta particle
C) gamma particle D) all of the three
 
Answer & Explanation Answer: D) all of the three

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry

4 4254