Sulphonate is a detergent used for cleaning clothes and utensils. It is a salt or ester of any sulphonic acid containing the ion RSO2– or the group RSO2–, R being an organic group. , it is used as comonomers in LLDPE and HDPE (C4–C8, in manufacture of lubricants (C^-C^). and industrial chemicals and plasticisers.

Correct Option: C

Sulphonate is a detergent used for cleaning clothes and utensils. It is a salt or ester of any sulphonic acid containing the ion RSO2– or the group RSO2–, R being an organic group. , it is used as comonomers in LLDPE and HDPE (C4–C8, in manufacture of lubricants (C^-C^). and industrial chemicals and plasticisers.

An amalgam is a substance formed by the reaction of mercury with another metal. Almost all metals can form amalgams with mercury, notable exception being iron. Silver-mercury amalgams are important in dentistry, and gold-mercury amalgam is used in the extraction of gold from ore. Dentistry has used alloys of mercury with metals such as silver, copper, indium, tin and zinc. Amalgam is an “excellent and versatile restorative material” and is used in dentistry for a number of reasons.

Correct Option: D

An amalgam is a substance formed by the reaction of mercury with another metal. Almost all metals can form amalgams with mercury, notable exception being iron. Silver-mercury amalgams are important in dentistry, and gold-mercury amalgam is used in the extraction of gold from ore. Dentistry has used alloys of mercury with metals such as silver, copper, indium, tin and zinc. Amalgam is an “excellent and versatile restorative material” and is used in dentistry for a number of reasons.

Iron is a chemical element with the symbol Fe and atomic number 26. It is a metal in the first transition series. It is the most common element (by mass) forming the planet Earth as a whole, forming much of Earth’s outer and inner core. It is the fourth most common element in the Earth’s crust. Wrought iron is the purest form of iron. It contains less than 0.25% carbon .

Correct Option: D

Iron is a chemical element with the symbol Fe and atomic number 26. It is a metal in the first transition series. It is the most common element (by mass) forming the planet Earth as a whole, forming much of Earth’s outer and inner core. It is the fourth most common element in the Earth’s crust. Wrought iron is the purest form of iron. It contains less than 0.25% carbon .

Peat contains recognizable traces of the original plant material. Initially the peat is converted into lignite or ‘brown coal’ - these are coal-types with low organic maturity. In comparison to other coals, lignite is quite soft and its colour can range from dark black to various shades of brown.

Correct Option: C

Peat contains recognizable traces of the original plant material. Initially the peat is converted into lignite or ‘brown coal’ - these are coal-types with low organic maturity. In comparison to other coals, lignite is quite soft and its colour can range from dark black to various shades of brown.

Waxes are a class of chemical compounds that are plastic (malleable) near ambient temperatures. Characteristically, they melt above 45 °C (113 °F) to give a low viscosity liquid. Waxes are insoluble in water but soluble in organic, non-polar solvents. All waxes are organic compounds, both synthetic and naturally occurring. Although most natural waxes are esters, paraffin waxes are hydrocarbons, Paraffin waxes are mixtures of saturated and iso-alkanes, naphthenes, and alkyl- and naphthene-substituted aromatic compounds.

Correct Option: C

Waxes are a class of chemical compounds that are plastic (malleable) near ambient temperatures. Characteristically, they melt above 45 °C (113 °F) to give a low viscosity liquid. Waxes are insoluble in water but soluble in organic, non-polar solvents. All waxes are organic compounds, both synthetic and naturally occurring. Although most natural waxes are esters, paraffin waxes are hydrocarbons, Paraffin waxes are mixtures of saturated and iso-alkanes, naphthenes, and alkyl- and naphthene-substituted aromatic compounds.