Which of the following is used in making cement, lime and carbon dioxide?
a) Na2CO3
b) CaCO3
c) NaBr
d) NaCl
Which of the following is used in making soap and drain clean cleaner?
a) NaOH
b) NaHCO3
c) NaBr
d) NaCl
Which of the following is also known as baking soda?
a) Na2CO3 (sodium carbonate)
b) NaHCO3 (sodium bicarbonate)
c)NaCl (sodium chloride)
d) NaOH (sodium hyroxide)
Which of the following is also known as washing soda?
a) Na2CO3 (sodium carbonate)
b) NaHCO3 (sodium bicarbonate)
c)NaCl (sodium chloride)
d) NaOH (sodium hyroxide)
Which of the following is also known as caustic soda?
a) Na2CO3 (sodium carbonate)
b) NaHCO3 (sodium bicarbonate)
c)NaCl (sodium chloride)
d) NaOH (sodium hyroxide)
Covalent Bond:
A covalent bond consists of the mutual sharing of one or more pairs of electrons between two atoms. These electrons are simultaneously attracted by the two atomic nuclei. A covalent bond forms when the difference between the electro negativities of two atoms is too small for an electron transfer to occur to form ions.
