Chemistry MCQS for Class 10
Which element protects teeth from decay?
Sodium
Calcium
Potassium
Fluorine
Water has a maximum density at 4 oC
12 cm-3
1 g cm-3
4 gcm-3
2 g cm-3
Water molecule has a structure:
Non polar
Ionic
Tetrahedral
Polar
The heat capacity of water is.
4.2 Jg-1 K-1
5.9 Jg-1K-1
2.1 Jg-1K-1
3.2 Jg-1K-1
The salts of which element are present in detergent that causes the rapid growth of algae in water bodies is.
All of them
Sodium
Phosphate
Calcium
Some organic compound are soluble in water due to the presence of .
H+
Covalent bond
Botha a and b
#NAME?
Temporary hardness is because of.
CaCO3
MgCO3
MgSO4
Ca(HCO3)2
Which disease is caused by polluted water.
Diarrhea
Typhoid
Cholera
All of them
Which is not a heavy metal.
Zinc
Murcury
Cadmium
Lead
Which one of the following properties of water is responsible for rising of water in plants?
Viscosity
Specific heat capacity
Capillary action
Excellent solvent action
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