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Most voted questions under tag 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
+2 votes
2 answers
Who discovered Aluminum and when?
posted Jan 27, 2017 by anonymous
  • invention
  • science
  • personality
  • chemistry
  • discovery
+2 votes
0 answers
What is the another name for Fire Gas?
posted Jan 27, 2017 by anonymous
  • science
  • 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
+2 votes
0 answers
Why potassium nitrate is used in fertilizer?
posted Jan 5, 2017 by Kavyashree
  • chemistry
  • fertility
  • uses
+2 votes
2 answers
What is the Chemical name of Heavy water?
posted May 17, 2016 by Mukul Chag
  • science
  • chemistry
+2 votes
0 answers
Because of what chemical element the presence of the Glass color is deep blue.
posted Apr 21, 2016 by Debolina Charaborthy
  • science
  • chemistry
+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
+1 vote
How many isomers are there for C7H7CL [MCQ]
posted Jan 20, 2019 by Subodh Kulkarni
  • chemistry
+1 vote
0 answers
What does gobar gas contains mainly?
posted Aug 19, 2018 by Suresh Vp
  • chemistry
  • gas
+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
0 answers
pH of blood sample is 7.42. On acidification of 10ml of blood, 5.9ml of CO2(at stp), what is total conc of dissolve CO2?
posted Aug 9, 2018 by Brian Gomez
  • chemistry
+1 vote
1 answer
What is haloalkanes?
posted Jul 29, 2018 by Tanu Kumari
  • science
  • chemistry
+1 vote
1 answer
What is the structural formula of ch4
posted Jan 10, 2018 by Sntosh Rastoge
  • 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
0 answers
What happens to your voice when you inhale hydrogen or helium gas?
posted Oct 26, 2017 by Panchika Trivedi
  • science
  • gas
  • human
  • 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
+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
+1 vote
0 answers
What happed to the properties of Helium when it is cooled to almost absolute zero?
posted Jul 5, 2016 by Sunita
  • 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
0 answers
Which scientist has developed the periodic table to arrange all the elements in a structured way?
posted Apr 30, 2015 by anonymous
  • personality
  • chemistry
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
1 answer
Give the IUPAC name of acetic acid
posted Jun 10, 2019 by Vedharchana Ponnuri
  • 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
0 votes
1 answer
Define Acidic Anhydrides?
posted Jan 18, 2019 by anonymous
  • definition
  • 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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