Solutions
In manufacturing of food, drinks, textiles, soaps and detergents raw material is
water
crops
soil
oxygen
water
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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
Copper sulphate has solubility at 25 ยฐC in 100 g of water equal to
A. 22g
B. 20g
C. 12g
D. 44g
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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