The compressive strength of cement should not be less than about 110Kg/cm2 after three days & not less than 170Kg/cm2 after seven days. The fineness of an ordinary cement as determined by turbidimetric method should be about __________ cm2/gm.
800
1600
4000
8500
- The catalyst used in the production of elemental sulphur from H2S (by oxidation-reduction) is
- Vegetable oils contain large quantity of glycerides of unsaturated acids. When the vegetable oils contain…
- 'Synthesis gas' meant for the synthesis of organic compound is a variable mixture of
- Oils are partially hydrogenated (not fully) to manufacture Vanaspati, because fully saturated solidified…
- In the manufacture of sulphuric acid from elemental sulphur, the following sequence of major operations…
- Concentration of sulphide ores is done usually by
- CaCl(OCl) is the chemical formula of
- Which one of the following is not an elastomer?
- Pick out the true statement pertaining to water treatment.
- Stereospecific agents are exemplified by
- __________ glass is used for the manufacture of optical glass.
- Esterification reaction produces
- Isopropyl benzene produced by alkylation of benzene with propylene is known as
- Nitric acid is not used in the manufacture of
- Pure rectified spirit contains about __________ percent alcohol.
- Which is the most efficient absorbent for SO3 out of the following?
- Titanium dioxide is a/an __________ colour pigment.
- Pick out the wrong statement.
- More than 100 percent of __________ is present in oleum.
- Phenol formaldehyde
- What products do we get on electrolysis of saturated brine using steel cathode and graphite anode in…
- Addition of calcium oxide to water produces
- The main use of HCl is in the
- Detergent is produced by the sulphonation of dodecyl benzene, which is an __________ reaction.
- Removal of dirt/soil by soaps or detergent does not involve the __________ of soil.
- Thermal pyrolysis of ethylene dichloride produces
- The major constituents of glass are
- Pick out the correct statement.
- Function of sodium thiosulphate (hypo) in development of photographic film/plate is to
- __________ acid is the main constituent of cotton seed oil.