50 questions · timed · auto-graded
Anthracite is by and far the most superior quality of coal which contains $94-98\%$ carbon. It is lustrous. It burns without smoke and gives more heat and little ash. Hence, the grading of coal from superior to inferior is Anthracite, bituminous, lignite, peat.
The full form of $LPG$ is Liquefied petroleum gas. It is also referred as propane or butane. It is flammable and is used as fuel in heating appliances, cooking equipment and vehicles.
The most common fuel used in homes is liquefied petroleum gas because it is obtained from petroleum and it is liquefied by compression before filling into the gas cylinders. Liquefied petroleum gas consists mainly of butane. Lpg burns easily and it does not produce any poisonous gas on burning. $LPG$ burns with a smokeless flame and hence does not cause air pollution.
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S.No
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Column I (Amorphous forms of carbon)
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S. No
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Column II (Uses)
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|
$(P)$
|
Lamp black
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$(i)$
|
For making electrodes for dry cell.
|
|
$(Q)$
|
Bone Charcoal
|
$(ii)$
|
In gas masks.
|
|
$(R)$
|
Wood charcoal
|
$(iii)$
|
In extraction of metals.
|
|
$(S)$
|
gas carbon
|
$(iv)$
|
To remove colour from sugarcane juice.
|
|
$(T)$
|
Coke
|
$(v)$
|
For making black shoe polish.
|
| $P$ | $Q$ | $R$ | $S$ | $T$ |
| $(i)$ | $(v)$ | $(iii)$ | $(ii)$ | $(iv)$ |
| $P$ | $Q$ | $R$ | $S$ | $T$ |
| $(v)$ | $(iv)$ | $(ii)$ | $(iii)$ | $(i)$ |
| $P$ | $Q$ | $R$ | $S$ | $T$ |
| $(ii)$ | $(iii)$ | $(iv)$ | $(i)$ | $(v)$ |
| $P$ | $Q$ | $R$ | $S$ | $T$ |
| $(v)$ | $(iv)$ | $(ii)$ | $(i)$ | $(iii)$ |
| $P$ | $Q$ | $R$ | $S$ | $T$ |
| $(v)$ | $(iv)$ | $(ii)$ | $(i)$ | $(iii)$ |
|
$P$
|
$Q$
|
$R$
|
$S$
|
$T$
|
|
$(v)$
|
$(iv)$
|
$(ii)$
|
$(i)$
|
$(iii)$
|
The major component of $LPG$ and $CNG$ are butane and methane respectively.
Coal tar is a black, thick liquid with unpleasant smell. Naphthalene balls are used to repel moths and other insects, and are also obtained from coal tar. Other products that are obtained from coal tar are synthetic dyes, drugs, explosives, perfumes, plastics, paints, photographic materials, roofing materials, etc.
In India, the Petroleum Conservation Research Association $(PCRA)$ advises people on saving petrol/diesel while driving. The Petroleum Conservation Research Association $(PCRA)$ is an organization established in India in $1978,$ under the aegis of the Indian Ministry of Petroleum and Natural gas, engaged in promoting energy efficiency in various sectors of the economy. It helps the government in proposing policies and strategies aimed at reducing India's dependency on oil, in order both to save money and to reduce the environmental impact of oil use.
$CNG ($Compressed Natural Gas$)$ is not obtained from coal.
Note: Natural gas is formed under the earth by the decomposition of vegetable matter lying under water.
Fly ash is a fine powder formed when large amount of coal is burnt in sufficient quantity of air in places like thermal power stations etc. The ash is carried by atmospheric air due to strong current of air in the furnace, Hence, this ash is called fly ash. It causes respiratory problems when inhaled by man.