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Recent posts under tag 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
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
+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
1 answer
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
+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
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
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
0 votes
0 answers
What is the effect of mixing manganese dioixide with hydrogen peroxide?
posted Sep 17, 2018 by Harshita Dhaliwal
  • chemistry
  • chemicals
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
0 answers
What is the chemical formula for "White Lead"?
posted Sep 11, 2018 by anonymous
  • chemistry
  • chemical formula
0 votes
Which of the following is the name of an element in the periodic table? [MCQ]
posted Sep 10, 2018 by anonymous
  • chemistry
0 votes
Which of these substances is composed of only two elements – hydrogen and oxygen? [MCQ]
posted Sep 3, 2018 by Alok Dev
  • elements
  • chemistry
  • substance
0 votes
0 answers
What role does potassium permanganate have in the process where water is obtained from hydrogen peroxide?
posted Aug 30, 2018 by Deepak Chitragar
  • chemistry
0 votes
0 answers
Why the apple changes its color to brown after few minutes of cutting it?
posted Aug 25, 2018 by anonymous
  • food
  • why
  • chemistry
0 votes
0 answers
Which oxides is formed when potassium metal is burnt in excess air?
posted Aug 25, 2018 by anonymous
  • chemistry
0 votes
0 answers
Which colloidal solution is used in photography?
posted Aug 24, 2018 by Ruchi Kashyap
  • photography
  • general
  • chemistry
0 votes
1 answer
Which acid is used in synthetic lemonade?
posted Aug 19, 2018 by Sandy Joe
  • general
  • chemistry
+1 vote
0 answers
What does gobar gas contains mainly?
posted Aug 19, 2018 by Suresh Vp
  • chemistry
  • gas
0 votes
0 answers
When CO2 is passed through lime water, then what happens to the color of lime water?
posted Aug 15, 2018 by anonymous
  • chemistry
0 votes
0 answers
What is the chemical formula of Plaster of Paris?
posted Aug 15, 2018 by anonymous
  • chemistry
  • chemical formula
+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
0 votes
Which petroleum refinery product has the lowest boiling point? [MCQ]
posted Jul 4, 2018 by Subham Singh
  • petrol
  • chemistry
  • science
0 votes
0 answers
How do substance like con and water move in and out of the cell
posted Jun 29, 2018 by Golu Sitpara
  • chemistry
  • science
0 votes
1 answer
What is the chemical formula of the Sugar?
posted Jun 26, 2018 by Aman Rajbhar
  • chemistry
  • chemical formula
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