Solutions
Copper sulphate has solubility at 25 °C in 100 g of water equal to
22g
20g
12g
44g
22g
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The ‘solvents’ which keep us alive includesA. air
B. water
C. oxygen
D. carbon
The solution which is commonly used for cooking, drinking, washing, bathing and cleaning, is
A. water
B. solvents
C. clay
D. fluids
In manufacturing of food, drinks, textiles, soaps and detergents raw material is
A. water
B. crops
C. soil
D. oxygen
An important factor on which solubility depends, is the nature of
A. solvent
B. surface area
C. conditions
D. apparatus
The more accurate and quick measure of “pH” value is given by
A. indicator
B. pH scale
C. pH meter
D. universal indicator
Bacteria in our mouth are acidic which should be neutralized by
A. toothpaste
B. orange juice
C. vinegar
D. antacid
Some metals are so unreactive that they do not react with
A. copper
B. silver
C. gold
D. all of above
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