Asma takes some particles of sand. She likes to study them under concepts of chemistry but she does not know that in which branch of chemistry she can study them best.
Provide her help
Teacher asked Fozia to tell the names of steps of scientific method. She answered and teacher asked Good, your answer is 100% correct
Can you tell what was the answer given by Fozia
Carbon and Oxygen combines to form two oxides 'A' and 'B'. 'A' contains 12g of Carbon and 16g of oxygen while 'B' contains 12g of Carbon and 32g of Oxygen.
Tell which Law govern the formation of these oxides from same elements
The number of electrons / electron atom (take as P) used to form bond with another atom is know as valency of the atom P
Magnesium has 12 Protons in its Nucleus
Tell What will be its Valancy
Modern Periodic Table is very helpful in studying the elements
Tell into how many Groups it has been divided?
Uranium is a radioactive element and it has three isotopes.
The atomic number of 1st isotope is 92 and atomic mass of 2nd isotope is 235
What is the atomic number of 3rd isotope?
You are given three gases A, B and C. Their atomic masses are 2, 4 and 6 respectively
Which one of them will diffuse firstly?
Smoke is a solution
Substances present in it belong to which state / states of matter
Mudassar adds Calcium Chloride into ice
Guess what will be the temperature of ice?
The electrolyte which undergoes incomplete ionization is called Weak Electrolyte.
Tell which of the following is weak Electrolyte
Caesay has Red hair colour
As we know that hair colour is due to presence of elements in hairs
Tell which element is present in the hairs of Caesay?
The solubility of sodium sulphate decahydrate increases with/by---------------------------
Noble Gases do not form bonds with any other atom
Tell how many noble gases are?
Bohr Atomic model is an important part of Chemistry
Tell when it was presented?
Which one of the following has pure covalent bond?