Why do greenhouses sometimes have paraffin burners in them?

Why do greenhouses sometimes have paraffin burners in them?
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What is the meaning of paraffin ?

Description : What is the meaning of paraffin ?

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Why Alkenes Are Called Paraffin ?

Description : Why Alkenes Are Called Paraffin ?

Last Answer : CnH2n + 2 . The word 'paraffin' is a combination of the Greek words ' parum' and 'affinis' . 'Parum' means a little and 'affinis' means affinity . Thus paraffin means a compound with 'mild ... is, the carbon chain is saturated. This is why alkene is chemically less active and is called paraffin.

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Description : What is paraffin ?

Last Answer : Saturated hydrocarbons are called paraffin. Paraffin means extremely less chemically active.

Is paraffin wax stronger that stearic acid?

Description : Is paraffin wax stronger that stearic acid?

Last Answer : Need answer

Paraffin poisoning?

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Whencrudeoilisheated, which of thefollowinghydrocarbonisgiven off first A. kerosene C. gasolene C. natural gas D. paraffin

Description : Whencrudeoilisheated, which of thefollowinghydrocarbonisgiven off first A. kerosene C. gasolene C. natural gas D. paraffin

Last Answer : ANSWER : C

Which of the following is the petroleum wax? (1) Bees wax (2) Carnauba wax (3) Paraffin wax (4) Jojoba wax

Description : Which of the following is the petroleum wax? (1) Bees wax (2) Carnauba wax (3) Paraffin wax (4) Jojoba wax

Last Answer : (3) Paraffin wax Explanation: 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 ... in organic, non-polar solvents. All waxes are organic compounds, both synthetic and naturally occurring.

Candle is a mixture of – (1) Paraffin wax and stearic acid (2) Bees wax and stearic acid (3) Higher fat acids and stearic acid (4) Bees wax and paraffin wax

Description : Candle is a mixture of – (1) Paraffin wax and stearic acid (2) Bees wax and stearic acid (3) Higher fat acids and stearic acid (4) Bees wax and paraffin wax

Last Answer : (1) Paraffin wax and stearic acid Explanation: The candle can be made of paraffin (a byproduct of petroleum refining), microoystalline wax, stearin (now produced almost exclusively from palm waxes ... affordable and cheap wax alternatives) or spermaceti (extracted from the head of a Sperm Whale).

Which of the following is a good conductor of heat but bad conductor of electricity? (1) mica (2) asbestos (3) celluloid (4) paraffin wax

Description : Which of the following is a good conductor of heat but bad conductor of electricity? (1) mica (2) asbestos (3) celluloid (4) paraffin wax

Last Answer : (1) mica Explanation: Mica is a good conductor of heat but bad conductor of electricity.

Name the element kept by covering with paraffin?

Description : Name the element kept by covering with paraffin?

Last Answer : Lithium

Alkylation (A) Causes olefins to combine with each other(B) Causes olefins to combine with iso-paraffins(C) Converts iso-paraffin into olefin(D) Converts olefin into paraffin

Description : Alkylation (A) Causes olefins to combine with each other (B) Causes olefins to combine with iso-paraffins (C) Converts iso-paraffin into olefin (D) Converts olefin into paraffin

Last Answer : (B) Causes olefins to combine with iso-paraffins

Aniline point test of an oil qualitatively indicates the __________ content of an oil. (A) Paraffin (B) Olefin (C) Aromatic (D) Naphthene

Description : Aniline point test of an oil qualitatively indicates the __________ content of an oil. (A) Paraffin (B) Olefin (C) Aromatic (D) Naphthene

Last Answer : (C) Aromatic

Pick out the correct statement. (A) Paraffins have higher octane number than corresponding iso-paraffin (B) Paraffins have lower smoke point than aromatics

Description : Pick out the correct statement. (A) Paraffins have higher octane number than corresponding iso-paraffin (B) Paraffins have lower smoke point than aromatics

Last Answer : (B) Paraffins have lower smoke point than aromatics

Both asphalt and wax are produced by __________ base crude oils. (A) Naphthenic (B) Asphalt (C) Paraffin (D) Mixed

Description : Both asphalt and wax are produced by __________ base crude oils. (A) Naphthenic (B) Asphalt (C) Paraffin (D) Mixed

Last Answer : (C) Paraffin

Aniline point of the diesel is a measure of its __________ content. (A) Aromatic (B) Paraffin (C) Olefin (D) Naphthene

Description : Aniline point of the diesel is a measure of its __________ content. (A) Aromatic (B) Paraffin (C) Olefin (D) Naphthene

Last Answer : (B) Paraffin

Paraffin base crude oil as compared to asphalt base crude gives (A) Higher yield of straight run gasoline (B) Higher octane number gasoline (C) Lower viscosity index lube oil (D) Poorer yield of lube oil

Description : Paraffin base crude oil as compared to asphalt base crude gives (A) Higher yield of straight run gasoline (B) Higher octane number gasoline (C) Lower viscosity index lube oil (D) Poorer yield of lube oil

Last Answer : (A) Higher yield of straight run gasoline

Name the hydrocarbon having the poorest oxidation stability. (A) Naphthene (B) Olefin (C) Paraffin (D) Aromatics

Description : Name the hydrocarbon having the poorest oxidation stability. (A) Naphthene (B) Olefin (C) Paraffin (D) Aromatics

Last Answer : (D) Aromatics

Pick out the wrong statement. (A) Alkylation produces a larger iso-paraffin (having higher octane number) from the reaction of an olefin with smaller iso-paraffin (B) Catalytic alkylation processes use HF, AlCl3 & H2SO4 as Catalysts (C) All the alkylation processes use very high temperature (> 1000°C) (D) Gasoline having an octane number of 90 can be produced by alkylation process

Description : Pick out the wrong statement. (A) Alkylation produces a larger iso-paraffin (having higher octane number) from the reaction of an olefin with smaller iso-paraffin (B) Catalytic alkylation processes use HF ... (> 1000°C) (D) Gasoline having an octane number of 90 can be produced by alkylation process

Last Answer : (C) All the alkylation processes use very high temperature (> 1000°C)

Increase in the specific gravity of petroleum products indicates (A) Decrease in paraffin content (B) Increase in thermal energy per unit weight

Description : Increase in the specific gravity of petroleum products indicates (A) Decrease in paraffin content (B) Increase in thermal energy per unit weight

Last Answer : (A) Decrease in paraffin content

Which parameter is used for the grading of paraffin waxes? (A) Specific gravity (B) Melting point (C) Viscosity (D) Penetration number

Description : Which parameter is used for the grading of paraffin waxes? (A) Specific gravity (B) Melting point (C) Viscosity (D) Penetration number

Last Answer : (C) Viscosity

Reforming converts (A) Olefins into paraffins (B) Naphthenes into aromatics (C) Naphthenes into olefins (D) Naphthenes into paraffin

Description : Reforming converts (A) Olefins into paraffins (B) Naphthenes into aromatics (C) Naphthenes into olefins (D) Naphthenes into paraffin

Last Answer : (B) Naphthenes into aromatics

How are paraffin wax and beeswax different?

Description : How are paraffin wax and beeswax different?

Last Answer : Paraffin wax is a hydrocarbon. Beeswax, a natural wax is mainly made of esters of fatty acids and various long chain alcohols.

Calorific value of (A) Light paraffinic fuel oils is equal to that of equivalent olefins (B) n-paraffin is lower than that of iso-paraffins of the same compounds (C) Light paraffinic fuel oils is higher than that of equivalent olefins (D) Light paraffinic fuel oils is lower than that of equivalent olefins

Description : Calorific value of (A) Light paraffinic fuel oils is equal to that of equivalent olefins (B) n-paraffin is lower than that of iso-paraffins of the same compounds (C) Light paraffinic fuel ... than that of equivalent olefins (D) Light paraffinic fuel oils is lower than that of equivalent olefins

Last Answer : (C) Light paraffinic fuel oils is higher than that of equivalent olefins

Which of the following, when pyrolysed, produces Perchloroethylene? (A) Ethylene dichloride (B) Chlorobenzene (C) Carbon tetrachloride (D) Chlorinated paraffin

Description : Which of the following, when pyrolysed, produces Perchloroethylene? (A) Ethylene dichloride (B) Chlorobenzene (C) Carbon tetrachloride (D) Chlorinated paraffin

Last Answer : (C) Carbon tetrachloride

The melting point of paraffin wax (which contracts on solidification) __________ with pressure rise. (A) Increases (B) Decreases (C) Remains unchanged (D) Decreases linearly

Description : The melting point of paraffin wax (which contracts on solidification) __________ with pressure rise. (A) Increases (B) Decreases (C) Remains unchanged (D) Decreases linearly

Last Answer : (A) Increases