Water always contains hydrogen and oxygen in the ratio 1:8 by weight. This is in accordance with the
Law of Multiple Proportions
Law of Definite Proportions
Law of Conservation of Mass
Law of Reciprocal Proportions
Correct Answer :
B. Law of Definite Proportions
Related Questions
An example of stimulant fertilizer is
gypsum
urea
potassium nitrate
ammonium phosphate
The simplest hydrocarbon is
benzene
methane
ethane
butane
Deficiency of iron causes
nervous disorders
heart diseases
anaemia
impairment of vision
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tin
manganese
platinum
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phenol
washing soda
absolute alcohol
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carbides
hydrocarbons
carbonyls
Penicillin was discovered by
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Sir JJ Thomson
Dr Nessler
Sir John Russel
If people sleep in closed rooms where charcoal fire is burning, they die due to
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carbon dioxide
methane
phosgene
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maltose
glucose
fructose
Heated saw dust catches fire when a drop of concentrated nitric acid is added to it. This is due to
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oxidation
reduction
dehydrogenation
The value of Avogadro Number is
6.023 x 1022
1 x 10-14
cl 6.056 x 10-6
6.023 x 1023
Solid carbon dioxide is used
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as a refrigerant
as an antiseptic
as a bleaching agent
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nitrogen
nitrous oxide
nitric oxide
nitrogen peroxide
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high temperature
light
moisture
dry air
BHC is a
Rodenticide
Herbicide
Pesticide
Fungicide
A metal which occurs 'free' in nature is
gold
zinc
tin
molybdenum
Hydrogen gas has
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a very pungent smell
an irritating smell
no smell at all
White vitriol is
ZnSO4 . 7H2O
FeSO4 . 7H2O
MgSO4 . 7H2O
CaSO4 . 2H2O
The flux added in the blast furnace is
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FeO
SiO2
MgO
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proteins
salts
fats
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sucrose
glucose
fructose
a mixture of glucose and fructose
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nitrites
hyponitrates
nitrides
Leakage in Liquefied Petroleum Gas (LPG) cylinders is easily detected by adding
mercaptans
propylene
carbon disulphide
phosgene
In addition to nitric acid, another acid which may render iron passive is
acetic acid
oxalic acid
chromic acid
citric acid
Which of the following is used in fuel to propel rockets?
Petrol
Kerosene
Hydrazine
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The poisonous nature of carbon monoxide is due to
cutting off supply of oxygen
it™s being converted into carbon dioxide
its combination with haemoglobin of blood
its blocking of vocal chords
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Phenol
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Acetic acid
Which of the following is not a chemical change?
Burning of magnesium ribbon in air
Distillation of water
Heating of cane sugar
Setting of cement