Fish contains about __________ percent oil.
5
10
20
35
Correct Answer :
C. 20
Related Questions
Hydrazine is used in water treatment for the removal of
Colloidal impurities
Dissolved oxygen
Turbidity
Chlorinous taste
Pure rectified spirit contains about __________ percent alcohol.
45
70
95
99.5
Polyvinyl chloride (PVC) is
A thermosetting material
A condensation polymerisation product
Made by employing emulsion polymerisation
None of these
Alcohol content in freshly prepared natural and fortified wine may be respectively around __________ percent.
7-14 and 14-30
7-14 and 40-50
14 - 30 and 40-50
10 - 20 and 40 - 50
Polythene is a/an __________ polymerisation product.
Addition
Condensation
Thermosetting
None of these
Varnish does not contain
Thinner
Pigment
Both (A) & (B)
Neither (A) nor (B)
Chloramines are used in water treatment for
Disinfection and control of taste & odour
Corrosion control
Removing turbidity
Control of bacteria
Which of the following is an endothermic reaction?
Absorption of SO3 in 98% H2SO4
C + H2O = CO + H2
Thermal dissociation of iron pyrites
Both (B) and (C)
Which of the following is a bleaching agent added in the detergents to facilitate removal of stains caused due to blood, tea etc?
Sodium silicate
Sodium borate
Sodium tripolyphosphate (STPP)
Caustic soda
CaO is called
Quick lime
Slaked lime
Limestone
Calcite
Which of the following has sodium bicarbonate as its main constituent?
Baking soda
Baking powder
Washing soda
None of these
__________ glass is used for the manufacture of optical glass.
Pyrex
Soda
Flint
Crooke's
Liquefaction of gases cannot be done by
Exchange of heat with colder stream
Adiabatic expansion through a throttle valve (Joule-Thomson expansion)
Merely compressing it beyond critical pressure
Adiabatic expansion against a piston or in a turbine
Setting of plaster of Paris is accompanied with
Hydration
Dehydration
Hydrolysis
Loss of CO2
A mixture of chlorine & sodium bromide acts as a/an
Insecticides
Analgesic drug
Fire retardant
Hydrogenation catalyst
Superior quality laboratory apparatus is made of the __________ glass having low thermal coefficient of expansion & high chemical resistance.
Flint
Soda
Pyrex
Potash
Blue colour is imparted to glass by the addition of
FeSO4
PbO
CaO
NaOH
In primitive days, __________ was being manufactured by Leblanc Process.
Alum
Washing soda
Soda ash
Calcium carbide
Oxidation of ortho-xylene in presence of __________ catalyst is done to produce phthalic anhydride on commercial scale.
Nickel
Vanadium
Alumina
Iron
The most economical pulp for the production of newsprint would be the __________ pulp.
Ground-wood
Sulphate
Sulphite
Semi-chemical
Rancidity of the fatty oil can be reduced by its
Decoloration
Hydrogenation
Oxidation
Purification
Direct conversion of chemical energy into electrical energy is done in a
Magnetohydrodynamic (MHD) generator
Fuel cell
Fast breeder reactor
None of these
Drinking (potable) water treatment does not involve
Coagulation
Sedimentation
Softening
Disinfection
Pick out the wrong statement pertaining to nitric acid.
About 90% of nitric acid is manufactured by Ostwald's process
It is a strong mono basic acid which reacts with almost all the metals except noble metals
Yellow color of impure nitric acid is because of dissolved oxides of nitrogen (mainly NO2)
Arc process of nitric acid manufacture is economical as compared to Ostwald's process
The biochemical treatment applied to sewage effluents is a process of
Dehydration
Reduction
Oxidation
Polymerisation
Which of the following is a constituent of vinegar?
Around 10% alcohol
Around 1% acetic acid
Both (A) and (B)
Neither (A) nor (B)
Use of chlorine in the treatment of sewage
Helps in grease separation
Increases the biological oxygen demand (BOD)
Causes bulking of activated sludge
Aids in flocculation
__________ is a polysaccharide.
Maltose
Starch
Sucrose
Glucose
__________ iron is the purest form of iron.
Cast
Wrought
Pig
High silicon
The process used for the manufacture of ethyl alcohol from molasses is
Distillation
Dehydration
Dehydrogenation
None of these