Sucrose is a
Monosaccharide
Disaccharide
Polysaccharide
None of these
Correct Answer :
B. Disaccharide
Related Questions
Pig iron is produced by blast furnaces in India using mostly the iron ore named
Hematite
Magnetite
Siderite
Chalcopyrite
Essential oils are usually obtained using
Steam distillation
Extractive distillation
Solvent extraction
Leaching
The main use of HCl is in the
Drilling of petroleum wells and pickling of steel sheets
Manufacture of cationic detergent
Treatment of spent fuel of nuclear reactor
None of these
In sulphate pulp manufacture, the pressure and temperature in the digestor is
10 atm., 800 °C
10 atm., 170-180°C
1 atm., 170 - 180°C
1 atm., 800°C
Hydrocyanic acid (HCN) is used as an insecticide for
Controlling timber degradation by ants
Controlling poultry lice
Potato beetle
Citrus fruits
Naphthalene is removed from coke oven gas by
Adsorbing on palladium
Absorbing in ethanolamine
Scrubbing with wash oil
Passing it through electrostatic precipitator
The drug used in contraceptives is
Sulfadiazine
Mestranol
Methyl salicylate
Penicillin
Hydrogenation of oil takes place in a/an __________ reactor.
Autothermal
Trickle bed
Plug flow
None of these
Gun powder, which is an explosive comprises of charcoal, sulphur and
Glycerine
Salt petre
Nitro glycerine
Dynamite
Sulphur addition in soap is done to
Improve the soap texture
Cure pimples & dandruff
Fasten lather formation
Increase its cleansing action
Which of the following has sodium bicarbonate as its main constituent?
Baking soda
Baking powder
Washing soda
None of these
Molecular weights of polymers are in the range of
102 - 102
105 - 109
102 - 107
109 - 1011
Which of the following is a constituent of coffee?
Caffeine
Nicotine
Calgon
Lignin
Use of water having dissolved oxygen in boilers promotes
Corrosion
Sequestration
Scale formation
None of these
Zeolite removes both temporary as well as permanent hardness of water by precipitating calcium and magnesium present in water as insoluble zeolites. Used zeolite is regenerated by flushing with the solution of
Calcium sulphate
Sodium chloride
Sodium sulphate
Magnesium chloride
A substance produced by a living organism and capable of anti-microbial activity is called a/an
Antibiotic
Antiseptic
Disinfectant
None of these
Lime and soda ash are added to water to remove
Bicarbonates & sulphates of calcium and magnesium
Undesirable taste and odour
Bacteria
Its corrosiveness
High purity nitrogen is used in
Making protective gas (95% N2 + 5% H2) for annealing of cold rolled steel strip coils
Fire fighting purposes
Both (A) & (B)
Neither (A) nor (B)
Concentration of NaOH solution produced by diaphragm electrolytic cell is about __________ percent.
10
25
50
98
Very fine suspended and colloidal impurities are removed from water by a process called
Sedimentation
Coagulation
Disinfection
Softening
Which catalyst is used in the manufacture of ethylene oxide by oxidation of ethylene?
AgO
Al2O3
ZnCl2
Fe2O3
Pick out the wrong statement. Iodine value of an oil or fat is
The number of grams of iodine taken up by 100 gm of oil or fat
A measure of its unsaturation
Helpful in findings its adulteration & its suitability for making soap
Independent of the type of oil, whether it is drying or non-drying
Which of the following is an yellow pigment?
Titanium dioxide
Ferrous sulphate
Lead chromates
Zinc sulphides
Isopropyl benzene produced by alkylation of benzene with propylene is known as
Neoprene
Cumene
Gelatin
Mercaptans
Pick out the wrong statement pertaining to solvent extraction of oil. Rate of extraction
Decreases with decrease of thickness of the flakes
Increases with the increasing flake size keeping the flake thickness constant
Increases considerably with the rise of temperature
Decreases as the moisture content of flakes increases
White phosphorous is stored under water, because
It does not react with water
It is poisonous
Its kindling temperature in dry air is very low
It is unstable
Polymethyl methacrylate (PMMA) is known as
Bakelite
Teflon
Perspex
Nylon-6
Which of the following sugars is the sweetest?
Glucose
Fructose
Sucrose
Lactose
A mineral is termed as 'ore', if
A metal can be economically extracted from it
It contains ≥ 40% metal
The metal present in it is costly
All (A), (B) and (C)
Claude process of gas liquefaction employs
Merely compression of gas beyond its critical pressure
Joule-Thomson expansion cooling
Heat exchange with colder stream
Adiabatic expansion against a piston or in a turbine