Who proposed the 'Law of Octaves' in the periodic classification of elements?
The 'Law of Octaves' was proposed by John Newlands in 1865. According to this law, elements arranged in increasing order of atomic weights exhibit similar properties at every eighth element.
What is the colour of the outer zone of complete combustion of candle flame?
What defines an ion?
The force of attraction between the particles of matter is maximum in______.
Magnesium oxide (MgO) + Water (H2O) = ?
Ethane gas has a slightly _____ taste.
What is the main chemical used in the production of matchsticks?
Which of the following pair of element – atomicity is correct?
I. Helium – monoatomic
II. Oxygen – triatomic
100 gram of ice at 0°C is mixed with 100 gram of water at 80°C. What will be the final temperature of the mixture ?
The process of depositing a layer of any desired metal on another material by means of electricity is called:
Which chemical compound is commonly known as Pearl Ash?
