Beri-beri is caused by deficiency of Vitamin
A
C
B12
B1
Correct Answer :
D. B1
Related Questions
Cupellation is used in the purification of
Lead
Tin
Silver
Gold
Radium was isolated from
galena
dolomite
sylvine
pitchblende
In the common soda-acid fire extinguisher, the fire is put out by
acid fumes
sodium bicarbonate
carbon dioxide
sodium carbonate
The alloy which is extremely hard and resistant to acids is
chrome steel
silicon steel
stainless steel
invar
Hypo' is
sodium nitrate
Potassium nitrate
sodium thiosulphate
ammonium chloride
Which of the following act a both u oxidising and reducing agent?
nitric acid
ammonia
nitrous acid
nitrogen peroxide
If people sleep in closed rooms where charcoal fire is burning, they die due to
carbon monoxide
carbon dioxide
methane
phosgene
A compound of carbon used as anaesthetic is
carbon disulphide
carbon tetrachloride
phosgene
chloroform
Harmful bacteria in drinking water cannot be destroyed by
chlorination
boiling
adding caustic soda
ozonisation
When ants bite, they inject
glacial acetic acid
methanol
formic acid
stearic acid
The compound of iron used in the manufacture of blue-black ink is
ferric chloride
ferric sulphate
ferric thiocyanate
ferrous sulphate
An example of thermo setting plastics is
bakelite
polythene
PVC
Teflon
Galvanising is coating Iron with
nickel
zinc
chromium
copper
Gasoline is obtained from crude petroleum by
fractional distillation
fractional crystallisation
sublimation
evaporation
The raw materials required for the manufacture of glass are
silica, sodium nitrate and soda ash
silica, limestone and sodium nitrate
silica, sodium oxide and limestone
silica, soda ash and limestone
Which one of the following is used for dry cleaning?
Kerosene oil
Diesel oil
Lubricating oil
Petroleum ether
Plaster of Paris
contracts while setting
expands while setting
is highly volatile
does not suffer any changes in volume while setting
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.
An acid which is used as a preservative for pickles is
hydrochloric acid
citric acid
tartaric acid
acetic acid
Which of the following can absorb gases quickly?
Activated charcoal
Anthracite coal
Diamond
Graphite
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
A drug that is usually administered for malaria is
sulphanilamide
quinine
methicillin
novocaine
Which is the 'odd man' in the following?
brass
common salt
cane sugar
water
The compound which is both an antiseptic and a disinfectant is
phenol
iodoform
bleaching powder
blue vitriol
Washing soda is
sodium hydroxide
sodium carbonate
sodium bicarbonate
potassium chloride
The sugar which is used in silvering mirrors is
sucrose
maltose
glucose
fructose
Sulphur is readily soluble in
Water
Alcohol
Carbon-di-sulphide
Sodium chloride solution
Mortar contains cement and sand in the ratio of
1 : 1
1 : 2
2 : 3
1 : 3
Methylated spirit is a mixture of
methyl alcohol and acetic acid
methyl alcohol and ethyl alcohol
ethyl alcohol and pyridine
methyl alcohol and pyridine
Consider the following statements: Hard water is not suitable for
1) drinking
2) washing clothes with soap
3) use in boilers
4) irrigating crops
Which of these statements are correct?
1 and 3
2 and 3
1, 2 and 4
1, 2, 3 and 4