Please follow and like us:
Chemistry -One Liners
1-Action of phosphoric acid on rock phosphate produces phosphoric acid
2-What is the name given to the electrons in the highest occupied energy level of an atom ? -Ans- valence electrons
3-What type of bonding does NaCl have ? -Ionic
4-Temperature and pressure in ammonia converter is 450 atm, 550°C
5-Fusion zone in the electric furnace used for reduction of phosphate rock to elemental phosphorous is maintained at 1400-1450 °C.
6-Gasoline extracted from natural gas (by compression and cooling) is called the unleaded gasoline.
7-When H+forms a bond with H2 O to form the hydronium ion H3O+ , this bond is called a coordinate covalent bond because both bonding electrons come from the oxygen atom
8-Reaction of orthophosphoric acid with phosphate rock produces triple superphosphate
9-The relative numbers of atoms of each kind in any chemical compound (using atomic symbols and subscripts) is known as a chemical formula
10-The melting points of molecular compounds are usually lower than those of ionic compounds
11-What causes hydrogen bonding ? -Ans- bonding of a covalently bonded hydrogen atom with an unshared electron pair
12-The model for metallic bonding is known as the electron sea model
13-The formula for potassium sulfide is K2S
14-What is the name of the ionic compound formed from lithium and bromine ? -Ans- lithium bromide
15-Lower temperature and large excess of ammonia in urea melt decreases biuret formation
Please follow and like us:
(Visited 37 times, 1 visits today)