Vinegar is the trade name for
chloroform
acetic acid
phenol
carbon tetrachloride
Correct Answer :
B. acetic acid
Related Questions
Ozone occurs in the upper layers of air in the atmosphere because
it is lighter than air
in the lower layers it becomes unstable
ultra-violet light is present only in the upper layers
it mixes freely with O2 in the upper layers
The substance preserved under water is
potassium
sodium
red phosphorus
white phosphorus
Tincture iodine is a solution of
iodine in potassium iodide
iodine in alcohol
iodine in water
iodine in carbon disulphide
Which of the following elements is not required for the healthy growth of plants?
Nitrogen
Phosphorus
Potassium
Mercury
Coke is a substance obtained
from coal mines
when wood is burnt in excess of air
by heating coal out of contact with air
by heating wood out to contact with air
The main constituent of gobar gas is
methane
nitrogen
carbondioxide
ethylene
Iron is coated with zinc to prevent rusting. The process is called
annealing
tempering
calcining
galvanising
Which of the following represents a physical change?
sublimation
oxidation
reduction
decomposition
The first organic compound prepared in the laboratory was
acetic acid
chloroform
urea
methane
Nylon is made from
terephthalic acid and ethylene glycol
hexamethylene diamine and adipic acid
cellulose nitrate
cellulose acetate
Which or the following electrolysis?
Aluminium
Copper
Zinc
Iron
Real gases tend to become ideal Under
low pressure and high temperature
low pressure and low temperature
high pressure and low temperature
high pressure and high temperature
Refined petroleum is decolourised by
manganese dioxide
bauxite
animal charcoal
quicklime
Cholesterol is
a carbohydrate
a protein
a lipid
a hormone
In addition to nitric acid, another acid which may render iron passive is
acetic acid
oxalic acid
chromic acid
citric acid
The simplest hydrocarbon is
benzene
methane
ethane
butane
The earliest name given to nitrogen was
dephlogisticated air
azote
inflammable air
marine acid air
Nitrous oxide used as anaesthetic is usually mixed with
ethyl alcohol
chloroform
oxygen
methyl alcohol
Isotopes differ in the number of
Protons
Neutrons
Electrons
Protons and electrons
Calamine is a ore of
tine
magnesium
zinc
copper
In the process of purification of water for town supply, the substance used to remove bad smell and colour from water is
charcoal
bleaching powder
chlorine
carbolic acid
The artificial silk produced from cellulose is
Polyethylene
Nylon
Terylene
Rayon
The number of neutrons in the nucleus of an atom of mass A and atomic number Z is given by
A - Z
A + Z
Z
A
The pure at form of iron is
wrought iron
steel
pig iron
nickel steel
White lead is
a basic salt
an acid salt
a double salt
a normal salt
Iodine in alcohol is known as
quick lime
tincture iodine
rectified spirit
None of these
Dust particles in the air of large industrial cities are removed by
Sedimentation
Electrophoresis
Tyndall effect
Brownian movement
The earliest known acid is
nitric acid
oxalic acid
carbonic acid
acetic acid
The percentage of silver in German silver is
ten
twenty
zero
fifty
Which of the following types of water gives lather easily with soap?
Hard water
Heavy water
Soft water
Both (a) and (b)