The compounds produced by plants in the process of photosynthesis are
carbohydrates
proteins
salts
fats
Correct Answer :
A. carbohydrates
Related Questions
Radium was isolated from
galena
dolomite
sylvine
pitchblende
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
Which of the following la a very good supporter of combustion?
Carbon monoxide
Oxygen
Nitrogen
Hydrogen
Argyrol used as eye ointment is a solution of
hydrogen peroxide
silver nitrate
tincture iodine
m-cresol
The process of heating steel to bright red heat and cooling suddenly by plunging it into water is known as
annealing
hardening
quenching
tempering
Deficiency of iron causes
nervous disorders
heart diseases
anaemia
impairment of vision
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
Grape sugar is another name for
glucose
fructose
sucrose
maltose
The raw materials used in the manufacture of cement are
brimstone and silica
limestone and clay
brimstone and clay
brimstone and limestone
Solid carbon dioxide (Dry ice) is also known as
Thiokol
Drikold
Perhydrol
Mannitol
Harmful bacteria in drinking water cannot be destroyed by
chlorination
boiling
adding caustic soda
ozonisation
Which is the 'odd man' in the following?
brass
common salt
cane sugar
water
An essential condition for rusting is
high temperature
light
moisture
dry air
A non-material kind of pollution is
land pollution
air pollution
noise pollution
water pollution
The human body contains about
50% water
10% water
70% water
20% water
On chemical analysis, a bottle cork is found to contain primarily
proteins
carbohydrates
tannins
lipids
The main element used in the vulcani-sation of rubber is
nickel
copper
sulphur
graphite
Which of the following types of water gives lather easily with soap?
Hard water
Heavy water
Soft water
Both (a) and (b)
Phosgene is a compound of
red phosphorus and oxygen
white phosphorus and oxygen
carbon monoxide and chlorine
carbon dioxide and chlorine
Hard water does not lather well with soap because
it contains carbonates of calcium and magnesium
it contains sodium chloride
it is highly coloured
it contains suspended impurities
Which of the following act a both u oxidising and reducing agent?
nitric acid
ammonia
nitrous acid
nitrogen peroxide
A compound used both as a fungicide and as a disinfectant is
chlorine
carbon monoxide
sulphur dioxide
o-cresol
Vinegar is an aqueous solution of
oxalic acid
citric acid
acetic acid
hydrochloric acid
Lead soaps are used in
shaving creams
adhesive tapes
toilet powders
lubricants
Which or the following gases is soluble in water and Is collected by the downward displacement or air?
Carbon dioxide
Sulphur dioxide
Ammonia
Hydrogen
The ore of iron is
Dolomite
Magnetite
Bauxite
Anglesite
An element which is preserved under water is
Sodium
red phosphorus
white phosphorus
sulphur
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
Riboflavin deficiency causes
tongue inflammation
pellagra
night blindness
anaemia
An antipyretic is a drug used
in the treatment of malaria
to relieve sleepiness
to induce sleep
to lower body temperature