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Post under tag chemistry
Most answered questions under tag chemistry
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–1
vote
2
answers
Do water and ice weigh the same?
posted
Feb 19, 2018
by
Azhar Keer
water
physics
chemistry
science
+2
votes
2
answers
Who discovered Aluminum and when?
posted
Jan 27, 2017
by
anonymous
invention
science
personality
chemistry
discovery
+2
votes
2
answers
What is the Chemical name of Heavy water?
posted
May 17, 2016
by
Mukul Chag
science
chemistry
+1
vote
2
answers
Which scientist discovered the radioactive element radium?
posted
Jun 24, 2015
by
Sandeep Otari
personality
chemistry
elements
+1
vote
1
answer
What element has the symbol "P"?
posted
Aug 22, 2023
by
Pankaj Deshmukh
chemistry
+1
vote
1
answer
What are Lithium, Sodium, Potassium, Rubidium and Caesium?
posted
Sep 23, 2022
by
Saif Khanam
chemistry
+1
vote
1
answer
What name is given to the group of elements that includes fluorine, chlorine, bromine and iodine?
posted
Sep 20, 2022
by
Maninder Bath
chemistry
elements
+1
vote
1
answer
The white fumes that form when hydrogen chloride dissolves in water consist of what?
posted
Sep 12, 2022
by
Sandeep Otari
chemistry
+1
vote
1
answer
What is the atomic number of the element which is the basis for all organic chemistry?
posted
Aug 9, 2022
by
Deepak Chitragar
chemistry
+1
vote
1
answer
An atom of oxygen linked to an atom of hydrogen is a signature combination in the formulae of which compounds?
posted
Jul 1, 2022
by
Varuna Magar
chemistry
+1
vote
1
answer
How many elements are currently formally recognised in the periodic table of elements as having been observed?
posted
Sep 15, 2021
by
Pankaj Deshmukh
chemistry
elements
+1
vote
1
answer
What are chlorine, bromine and iodine?
posted
Aug 30, 2021
by
Kapil Kapoor
chemistry
+1
vote
1
answer
How many chemical elements currently recognised occur naturally?
posted
Aug 9, 2021
by
Harshita Dhaliwal
elements
chemistry
+1
vote
1
answer
When were the last elements formally discovered and added to the periodic table of elements?
posted
Jul 1, 2021
by
Ujjwal Mehra
elements
chemistry
+1
vote
1
answer
Elements in the periodic table show two main numbers. What does the number with decimal places represent?
posted
Feb 12, 2021
by
Simranjeet Singh
chemistry
elements
+1
vote
1
answer
Which poison is also an element on the periodic table?
posted
Feb 10, 2021
by
Aman
chemistry
elements
+1
vote
1
answer
Nitroglycerin is made by treating glycerin with nitric acid and … what?
posted
Dec 17, 2019
by
Prithvi
chemicals
chemistry
0
votes
1
answer
Give the IUPAC name of acetic acid
posted
Jun 10, 2019
by
Vedharchana Ponnuri
chemistry
+2
votes
1
answer
Burning methane in the presence of oxygen produces water and what gas?
posted
May 29, 2019
by
Naveen Kumar
chemistry
science
general
0
votes
1
answer
Define Acidic Anhydrides?
posted
Jan 18, 2019
by
anonymous
definition
chemistry
0
votes
1
answer
Calculate the weight of KMnO4 contained in 2 litres of 0.15 M solution
posted
Sep 16, 2018
by
Kumar Shubham
chemistry
0
votes
1
answer
Which acid is used in synthetic lemonade?
posted
Aug 19, 2018
by
Sandy Joe
general
chemistry
+1
vote
1
answer
How does the sensitivity of Gumamela (hibiscus) as a pH indicator compare to Litmus paper?
posted
Aug 10, 2018
by
Ma.liezel Fernandez
chemistry
+1
vote
1
answer
What is haloalkanes?
posted
Jul 29, 2018
by
Tanu Kumari
science
chemistry
0
votes
1
answer
What is the chemical formula of the Sugar?
posted
Jun 26, 2018
by
Aman Rajbhar
chemistry
chemical formula
+1
vote
1
answer
What is the structural formula of ch4
posted
Jan 10, 2018
by
Sntosh Rastoge
chemistry
0
votes
1
answer
What is the full name of the compound - CH2ClCH2CHClCHCl2
posted
Dec 18, 2017
by
anonymous
chemistry
+1
vote
1
answer
What is the percentage of salt in ocean water?
posted
Oct 31, 2017
by
Jordan White
ocean
science
water
chemistry
+1
vote
1
answer
Which element has the highest and lowest density?
posted
Oct 16, 2017
by
Jordan White
chemistry
elements
+1
vote
1
answer
What was the contribution by the Nobel prize winner George A. Olah?
posted
Mar 11, 2017
by
Pooja
nobel
personality
chemistry
+2
votes
1
answer
Serine, Valine and Glycine are common forms of what acid?
posted
Jan 11, 2017
by
Reshmi S
chemistry
organic chemistry
+1
vote
1
answer
Who was awarded a Nobel Prize in 1908 for his work on the chemistry of radioactive substances?
posted
Nov 28, 2016
by
Aarati Mahajan
nobel
award
chemistry
0
votes
1
answer
For what discovery did Sir Harold Kroto, Robert Curl and Richard Smalley receive the 1996 Nobel Prize in Chemistry?
posted
Aug 23, 2016
by
Nikhil Pandey
chemistry
nobel
award
0
votes
1
answer
What is (TEL) Tetraethyl Lead and what is its use?
posted
May 18, 2016
by
Erika
chemistry
science
0
votes
1
answer
Zirconium, hafnium and rutherfordium are elements in the same group.............what is the fourth member of this group?
posted
Sep 23, 2015
by
Nikhil Pandey
chemistry
metal
0
votes
0
answers
Calculate the mole fraction of benzene in solution containing 30%by mass in carbon tetrachloride
posted
Nov 30, 2020
by
Çhèlz Krystlé
chemistry
0
votes
0
answers
What is the product name of CH3-CH-CH2-CH3
posted
Oct 28, 2020
by
Zakria Bukhari
chemistry
0
votes
0
answers
calculate the ph of a buffer solution that result when 40ml of 0.1M NH3 diluted to 600 ml with deionized water?
posted
Sep 27, 2020
by
Hawnaz M Mohammad
chemistry
0
votes
0
answers
chemisty question on molecular formular ,empirical formular ,gas and periodic table
posted
Jun 7, 2020
by
Brenda Wakoli
chemistry
0
votes
0
answers
What is the chemical symbol for Manganese?
posted
Sep 9, 2019
by
Sidharth Malhotra
chemistry
chemical symbol
0
votes
0
answers
The ozone molecule is made up of three atoms of which gas?
posted
Sep 6, 2019
by
Samardeep Acharya
chemistry
0
votes
0
answers
String theory question
posted
Aug 10, 2019
by
Comeback Tuesday
general
chemistry
science
physics
0
votes
0
answers
Pharmaceutical question
posted
Jul 12, 2019
by
Comeback Tuesday
general
chemistry
0
votes
0
answers
osmotic pressure notes
posted
Mar 13, 2019
by
Sonu Kumar Ray
chemistry
0
votes
0
answers
Of four balloons filled respectively with ozone, carbon dioxide, oxygen and ammonia, which gas will make balloon float?
posted
Jan 22, 2019
by
Chahat Sharma
chemistry
science
+1
vote
How many isomers are there for C7H7CL [MCQ]
posted
Jan 20, 2019
by
Subodh Kulkarni
chemistry
0
votes
0
answers
If a solution of H2O and NaCl is heated what is the result?
posted
Dec 31, 2018
by
Anuradha Tabyal
chemistry
0
votes
0
answers
What is the ratio of hydrogen atoms to oxygen atoms respectively in a molecule of water?
posted
Nov 2, 2018
by
Prithvi
chemistry
0
votes
0
answers
the process of oxidation of palmitic acid
posted
Oct 2, 2018
by
Jaspreet Singh
chemistry
0
votes
0
answers
What is the melting point of ice in degree Celsius?
posted
Sep 28, 2018
by
Nimisha K
chemistry
science
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