Q. Milk is an example of
1) Sol
2) Gel
3) Emulsion
4) Suspension
Q. Milk contains the sugar
1) Sucrose
2) Maltose
3) Arabinose
4) 1actose
Q. Marsh gas mainly contains
1) C2H2
2) CO
3) CH4
4) H2S
Q. Marsh gas is
1) CH4 and H2
2) CH4
3) CO2, CO and N2
4) CO2
Q. Many microbes can effect the chemical process of
1) Dehydration
2) Decomposition
3) Fermentation
4) Polymerization
Q. Lime water contains
1) sodium hydroxide
2) calcium hydroxide
3) sodium carbonate
4) calcium carbonate
Q. Isotopes of an element
1) are physically identical with each other
2) are chemically identically with each other
3) are not identical with each other
4) have the same mass numbers
Q. Iron articles rust because of the formation of
1) ferrous chloride
2) a mixture of ferrous and ferric hydroxides
3) sodium carbonate
4) ferric chloride
Q. Glass is attacked by
1) hydrogen chloride
2) hydrogen bromide
3) hydrogen iodide
4) hydrogen fluoride
Q. Glass is
1) a compound
2) a supercooled liquid
3) a mixture of polysilicates
4) both b and c
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