Chemistry MCQS for Class 10
Which disease cause when humans use water of industrial effluents.
Jaundice
Cancer
Asthma
cholera
At which temperature o water shows mxamimum density.
4oC
-4oC
100oC
0 oC
The lives of aquatic plants and animals are indirectly related to concentration of dissolved gas in water.
Carbon
Nitrogen
Oxygen
Hydrogen
Rapid growth of algae in water bodies is because of detergent having.
Sulphate salts.
Phosphate salts.
Sulphonic acid salts.
Carbonate salts.
Swimming pools are cleaned by a process:
Chlorination
Hydrogenation
Bromination
Nitration
Which disease causes bone and tooth damage?
Jaundice
Cholera
Fluorosis
Hepatits
Hookworm is a parasite that infects the:
stomach
liver
small intestine
large intestine
The bond angle between H-O-H in water is:
104.6o
104.8o
104.5o
104.7o
Temporary hardness is removed by adding.
Slaked lime
Lime stone
Lime water.
Quick lime
Cause of diarrhoea among following is:
Cholera
Cryptosporidium
Typhoid
Diarrhea
Swimming pools are cleaned by the process.
Chlorination
Hydrogenations
Saponification
None of them
The heat capacity of water is greater than rocks.
5 times
7 times
4 times
6 times
The boiling point of water is.
100oC
0oC
25oC
4oC
Sodium zeolite is naturally occurring reason of .
Na2SIO3
NaAl (SiO3)2
CaCO3
Na2CO3
Hard water can cause.
Stomach disorder
Inefficiency of engine
All of them
Boiler blasts
Which of the following salt is soluble in water.
NaCl
KCl
All of them
Na2SO4
Boiling point of water is:
0oC
25oC
80oC
100oC
Ionic compounds are soluble in water due to:
ion-dipole forces
Dipole -induced dipole forces
Hydrogen bonding
Dipole-dipole forces
Which hepatitis is caused by contaminated water?
Hepatitis A
Hepatitis D
Hepatitis B
Hepatitis C
Hook warm larvae enter the body through.
All of them
Water
Skin
Food
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