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Chemistry Class 10 Chapter 16 - Chemical Industries - 6
1.
Which one of the following statements is incorrect about natural fertilizers?
Better than synthetic fertilizers
Don't damage the crops
Water insoluble
Water soluble
2.
Which one of the following is incorrect about synthetic fertilizers?
Water soluble
Hazardous to environment
Very economical
Results in bad odour of water
3.
Which one of the following is a fossil fuel?
Natural gas
All of these
Coal
Petroleum
4.
Which one of the following is also known as crude oil?
Coal
None of these
Natural gas
Petroleum
5.
The gaseous products accumulated over the petroleum is known as?
Coal
None of these
Petroleum
Natural gas
6.
The conversion of crude oil into useful products is called as?
Roasting
Smelting
Drilling
Refining
7.
In fractional distillation, the condensation of the compounds at the bottom depends upon thier?
Molecular weight
None of these
Boiling point
Melting point
8.
In fractional distillation, which compounds condense first near the bottom?
Having lowest boiling points
Having medium boiling points
Having highest boiling points
Having no boiling points
9.
How many carbon atoms per molecule are present in LPG?
1 to 4
8 to 12
10 to 16
5 to 10
10.
Petroleum is refined by?
Fractional distillation
None of these
Simple distillation
Destructive distillation
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