Chemistry MCQS for Class 10
The percentage of water in human body is.
70%
50%
40%
60%
soap is the sodium salt of long chain.
Amino acids
Nucleotides
None of them
Fatty acids
Which one of the following diseases severe diarrhea and can be fatal?
Cholera
Dysentery
Typhoid
Joundice
Permanent hardness is removed by adding.
Na2 zeolite.
Soda lime
Lime water
Quick lime
One H2O molecule can form hydrogen bonding with how many other H2O molecules?
Three
One
Four
Two
Gypsum in water is.
Sparingly soluble
Highly soluble
None of them
Insoluble
Which one of the following ion does not cause hardness in water?
Mg-2
Ca+2
SO-2
Na+
The process of removing temporary hardness of water.
Clark’s method
Sodium zeolite
Washing soda method
Filteration method
Water dissolves Non-ionic compounds by:
Ion-Ion forces
Dipole – Dipole forces
Dipole forces
Hydrogen Bonding
Which one of the following salts makes the water permanently hard?
CaSO4
CA(HCO3)2
NaHCO3
NaCO3
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