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Worksheetscarbon and its compounds
Total questions: 25
Worksheet time: 13mins
carbon occurs in combined state. true or false
true
false
which of the following object does not contain carbon.
diamond
glass
marble
none of the above
what is the chemical formula of calamine.
ZnCo
CaCo3
Na2Co3
Znco3
choose the 2 classes of all compounds.
inorganic, artificial
organic, artificial
inorganic, organic
organic, natural
choose crystalline forms of carbon.
graphite
fullerences
charcoal
coke
SiC ----heat-----> Si + C (charcoal)
true
false
which is the biggest diamond ever found.
cullinian
pitt
kohinoor
moon of baroda
what is the formula of the most common fullerence
C30
C40
C60
C35
tick the correct order of purity of coal
peat - anthracite - lignite - butiminous
anthracite - bituminous - lignite - peat
peat - lignite - anthracite - bituminous
peat - lignite - bituminous - anthracite
chose correct diagram for destructive distructive distillation.
2NaHCO3 ----heating----> + H2O + CO2
NaCO
Na2CO
Na3CO2
Na2CO3
carbogen contains
90% CO2 10% O
90% CO2 5% O 5% methane
95% CO2 5% O
95% O 5% CO2
what is inside of glass tube of a foam type fire extinguisher
sulphuric acid
aluminium sulphate
tick the gasses which result in global warming
carbon dioxide
Methane
Oxygen
carbon mono oxide
Carbon monoxide is non poisonous gas
true
false
what is the name of goverments scheme to reduce the air pollution caused by burning chrcoal.
pradhan mantri gram vikas yojna
pradhan mantri ujwalla yojna
which is the most commonly used coal type for industries
peat
antracite
bituminous
lignite
carbon di oxide is heavier than air
true
false
carbon mono oxide does not support extraction of metals from their oxides
true
false
carbon di oxide turn lime water milky
true
false
choose the wrong statement
carbon monoxide is a thermally stable gas
carbon di oxide is heavier than air
graphite is an non crystalline form of carbon
all are correct
fullerences are found in
igneous rocks
asteroids
solar winds
instastellar dust
CuO + CO ----heat-----> Cu + CO2
true
false
formula of oxallic acid
COH
COOH
(COOH)2
(COH)3
formula of ethyl alcohol
C2H5OH
CHOH
C2H3OH
