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Recent posts under tag chemicals

+1 vote
1 answer
in 1853 while working on the synthesis and properties of various acid anhydrides, French chemist Charles Frederic.......
posted May 21 by Balwinder
  • chemicals
+1 vote
1 answer
Aspartame is a chemical used as what?
posted Jan 4 by Aastha Joshi
  • chemicals
+1 vote
1 answer
What is a mixture of saturated aliphatic and alicyclic C7 to C12 hydrocarbons with a maximum content of 25% of C7.......
posted Jan 3 by Aarati Mahajan
  • chemicals
+1 vote
1 answer
What colour does blue litmus paper turn when in contact with acid?
posted Oct 13, 2023 by Ritika
  • chemicals
+1 vote
1 answer
What is another name for caustic soda?
posted May 18, 2023 by Prithvi
  • chemicals
+1 vote
1 answer
What is traditionally added to sulphur and saltpetre to make gunpowder?
posted Mar 21, 2023 by Tapesh Kulkarni
  • chemicals
+1 vote
1 answer
What is the common name of the chemical NH3, which is found in cleaning products?
posted Mar 16, 2023 by Yogeshwar Thakur
  • chemicals
+1 vote
1 answer
In July 2009, why did Russian physicists begin trying to synthesize Ununseptium?
posted Jun 2, 2022 by Harshita Dhaliwal
  • chemicals
+1 vote
1 answer
What is the most noticeable reaction when sodium is put into water?
posted Mar 15, 2022 by Nimish
  • chemicals
+1 vote
1 answer
What chemicals are used to transmit messages to other animals of the same species?
posted Oct 11, 2021 by Mohammad
  • animal
  • chemicals
+1 vote
1 answer
What colour are copper sulphate crystals?
posted Jun 1, 2021 by Riteshwar
  • chemicals
  • colour
+1 vote
1 answer
What is the common name for acetyl-salicylic acid?
posted Dec 16, 2020 by Vishal
  • chemicals
+1 vote
1 answer
Chloramine T trihydrate is a reagent commonly used in what?
posted Aug 24, 2020 by Sandeep Otari
  • chemicals
0 votes
1 answer
What are the features of enzymes?
posted Aug 18, 2020 by Nkrumah Solomon
  • chemicals
+1 vote
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What is prussic acid, found in bitter almonds and laurel leaves, also known as?
posted Jan 24, 2020 by Samardeep Acharya
  • chemicals
+1 vote
1 answer
What element, an essential plant nutrient, is used in the semiconductor industry?
posted Dec 24, 2019 by Yogeshwar Thakur
  • elements
  • chemicals
  • plant
  • nutrition
  • semiconductor
+1 vote
1 answer
Nitroglycerin is made by treating glycerin with nitric acid and … what?
posted Dec 17, 2019 by Prithvi
  • chemicals
  • chemistry
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0 answers
Which clear hard plastics is a markedly poor barrier to oxygen and water vapour?
posted Mar 6, 2019 by Pankaj Deshmukh
  • chemicals
0 votes
1 answer
What is used in fireworks and flares to give off a brilliant red light?
posted Feb 26, 2019 by Vishal
  • chemicals
  • fire works
+1 vote
1 answer
Which acid is known as king of acid?
posted Jan 26, 2019 by Zubair Butt
  • chemicals
0 votes
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Can a dry mouth be cure? How
posted Jan 22, 2019 by Karang Agouda
  • chemicals
0 votes
0 answers
Can you use gold leaf on rose?
posted Jan 3, 2019 by anonymous
  • chemicals
  • floristry
  • flower
  • gold
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Which of these is a common synthetic compound that, from 1878 to 1950, was derived from toluene extracted from coal tar? [MCQ]
posted Jan 3, 2019 by Saif Khanam
  • chemicals
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Which poisonous compound can be a gas, solid or liquid, the most infamous application of which was use by...............
posted Dec 14, 2018 by Kuldeep Apte
  • chemicals
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0 answers
If a chemical process is anaerobic it means it is happening under what conditions?
posted Nov 19, 2018 by Pankaj Deshmukh
  • chemicals
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The smell of hydrogen sulfide is usually compared with which of these? [MCQ]
posted Oct 10, 2018 by Alok Dev
  • chemicals
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Which of these are available in varieties such as 'rasayanik' and 'jaivik'? [MCQ]
posted Sep 20, 2018 by Pallavi Dubey
  • chemicals
  • organic
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What is the effect of mixing manganese dioixide with hydrogen peroxide?
posted Sep 17, 2018 by Harshita Dhaliwal
  • chemistry
  • chemicals
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0 answers
What chemical compound that is a colourless solid is about 3,000 times stronger than acetic acid?
posted Aug 31, 2018 by Nimish
  • chemicals
0 votes
Which element is essential for the construction of nuclear reactors? [MCQ]
posted Aug 27, 2018 by Jasmine P
  • chemicals
  • elements
  • nuclear
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What colour does red litmus paper turn when in contact with alkaline? [MCQ]
posted Aug 8, 2018 by Pankaj Deshmukh
  • chemicals
0 votes
What chemical is mostly used in match heads? [MCQ]
posted Jul 13, 2018 by Vishal
  • chemicals
0 votes
What chemical, found in many living organisms, is this compound of carbon, hydrogen and nitrogen, C5H9N3? [MCQ]
posted Jul 10, 2018 by Vikram Luthra
  • chemicals
  • organism
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Which of these is essential to the production of glass, rayon, soaps, detergents, dyeing textiles and in toothpaste? [MCQ]
posted Dec 4, 2017 by anonymous
  • chemicals
0 votes
0 answers
What solvent is used in permanent marker?
posted Nov 2, 2017 by Jordan White
  • chemicals
  • science
  • things
+1 vote
1 answer
What is a chemical
posted Oct 5, 2017 by Kino King
  • chemicals
0 votes
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Which is the most commonly used chemical for ripening of mangoes in India?
posted Sep 18, 2017 by Rameshwar Singh
  • chemicals
  • fruit
+1 vote
2 answers
What is the white, powdery substance that forms on battery?
posted Sep 18, 2017 by Paxton Brown
  • science
  • chemicals
  • substance
  • battery
0 votes
1 answer
What is the chemical name of a substance which kills rats?
posted Jul 31, 2017 by Rameshwar Singh
  • chemicals
  • substance
+1 vote
1 answer
What is the chemical name of sand?
posted Jul 27, 2017 by Riya Kumari
  • chemicals
0 votes
1 answer
What is the color of pure sulphur?
posted Apr 20, 2017 by Basabdatta Mukherjee
  • chemicals
0 votes
0 answers
Name the chemical added to LPG to detect leakage.
posted Apr 8, 2017 by Divya Bharti
  • chemicals
  • lpg
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0 answers
Which chemical compound is used to make plastic?
posted Mar 31, 2017 by Tanmay
  • chemicals
  • plastic
+1 vote
0 answers
What is the term for the conversion of a solid directly into a vapour by applying heat?
posted Jan 30, 2017 by Manish Tiwari
  • conversion
  • chemicals
0 votes
1 answer
H2SO4 is the chemical symbol for what?
posted Jan 3, 2017 by Mohammad
  • chemicals
+1 vote
0 answers
The chemical messenger that transports signals from one cell to another, called phytohormones in plants, are............
posted Nov 7, 2016 by Nimish
  • chemicals
  • animal
+1 vote
1 answer
Deep blue colour is imparted to glass by the presence of which colour?
posted May 18, 2016 by Kuldeep Apte
  • chemicals
+3 votes
2 answers
Which compound is added to Petrol for preventing knock-of the Engines?
posted May 17, 2016 by Chandan Kumar Pandey
  • science
  • chemicals
+2 votes
1 answer
Which chemical is used for removing air bubbles from glass during its manufacture?
posted May 17, 2016 by Aarati Mahajan
  • chemicals
+1 vote
1 answer
Detergents used for cleaning clothes and utensils contain which chemical?
posted May 17, 2016 by Simranjeet Singh
  • chemicals
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