Water has an unusually high bolling point because
its molecular weight is low
it is denser than ice
it is a good solvent for many ionic substances
the molecules of water are joined by hydrogen bonds
Correct Answer :
D. the molecules of water are joined by hydrogen bonds
Related Questions
The alloy added in the preparation of steel contains
Fe and C
Mn and C
Fe and Mn
Fe, Mn and C
High temperature thermometers use
sodium amalgam
an alloy of sodium and potassium
silver amalgam
calcium amalgam
An element which is preserved under water is
Sodium
red phosphorus
white phosphorus
sulphur
The scientist associated with the discovery of the nucleus was
Rutherford
Moseley
Niels Bohr
J.J. Thomson
Lunar caustic is
calcium sulphate
ammonium chloride
caustic soda
silver nitrate
Brine is a solution of
sodium chloride in water
iodine in alcohol
sulphur in carbon disulphide
Potassium iodide in water
Which among the following is a local anaesthetic?
Chloroform
Morphine
Streptomycin
Cocaine
CAN is used as (Calcium Ammonium Nitrate)
an explosive
a fertilizer
a dye
a bleaching agent
Vulcanisation was discovered by
Goodyear
Wohler
Baeyer
Perkin
The sugar which is used in silvering mirrors is
sucrose
maltose
glucose
fructose
________ is left behind after distillation of petroleum.
Arsenic
Barium
Benzene
Bitumen
The pH or pure water is nearly 7.0 It will increase on the addition or
hydrochloric acid
ammonia
cane sugar
common salt
The Long Form of the Periodic Table is based on
atomic number
valency
atomic mass
atomic radius
Rayon la made from
cotton
wool
cellulose
silk
Setting of cement is due to
hydration
dehydration
dialysis
osmosis
A non-material kind of pollution is
land pollution
air pollution
noise pollution
water pollution
Two or more entirely different compounds having the same molecular formula are known as
isobars
isotopes
isomorphs
isomers
The atomic number of an element represents
number of neutrons in the nucleus
number of protons and neutrons in the nucleus
the valency of the element
number of protons in the nucleus
The presence of dust particles in air serves
as a nucleus to condense water vapour resulting in rain
to maintain the average density of air
to minimise the inflammatory nature of oxygen
to protect the inhabitants of the earth from the effects of ultra violet rays.
A non-metal which is a good conductor or heat and electricity is
iodine
sulphur
graphite
phosphorus
The formula for cane sugar is
C6H12O6
C2H5OH
C12H22O11
C7H8O
An example of thermo setting plastics is
bakelite
polythene
PVC
Teflon
An acid which is used as a preservative for pickles is
hydrochloric acid
citric acid
tartaric acid
acetic acid
The Combined Gas Law equation is
P1V1T1 = P2 V2 T2
P1V1T2 = P2V2T1
P = P1 + P2 + P3
C =
Biogas is obtained during
decomposition of petrol
fermentation of animal and plant waste
destructive distillation of coal
electrolysis of water
During fermentation, the by-product is
ethyl alcohol
methyl alcohol
carbon monoxide
carbon dioxide
Solid carbon dioxide is used
as a drying agent
as a refrigerant
as an antiseptic
as a bleaching agent
Galvanising is the process of coating
iron with zinc
zinc with iron
copper with silver
silver with gold
Rusting is
an oxidation process
a reduction process
a physical change
an electro-chemical process
The chemical name of aspirin is
acetamide phenol
malonyl urea
aminosalicylic acid
acetyl salicylic acid