Which of the following is chief source of Naphthalene? (1) Moth balls (2) Moth flakes (3) Tar Camphor (4) Methyl Alcohol

Which of the following is chief source of Naphthalene? (1) Moth balls (2) Moth flakes (3) Tar Camphor (4) Methyl Alcohol
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(3) Methyl Alcohol Explanation: Petroleum-derived naphthalene is usually purer than that derived from coal tar.
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The chief source of naphthalene is - (1) Coal-tar (2) Diesel (3) Charcoal (4) Camphor

Description : The chief source of naphthalene is - (1) Coal-tar (2) Diesel (3) Charcoal (4) Camphor

Last Answer : (1) Coal-tar Explanation: Naphthalene is derived from a kind of naphtha which is a broad term encompassing any volatile, flammable liquid hydrocarbon mixture, including coal tar.

The chief source of naphthalene is (1) Coal-tar (2) Diesel (3) Charcoal (4) Camphor

Description : The chief source of naphthalene is (1) Coal-tar (2) Diesel (3) Charcoal (4) Camphor

Last Answer : Coal-tar

The main source of Naphthalene is - (1) Charcoal (2) Camphor (3) Coal-tar (4) Diesel

Description : The main source of Naphthalene is - (1) Charcoal (2) Camphor (3) Coal-tar (4) Diesel

Last Answer : (3) Coal-tar Explanation: The main source of Naphthalene is coal-tar. Naphthalene is derived from a kind of naphtha which is a broad term encompassing any volatile, namable liquid hydrocarbon mixture, including coaltar.

The main source of Naphthalene is (1) Charcoal (2) Camphor (3) Coal-tar (4) Diesel

Description : The main source of Naphthalene is (1) Charcoal (2) Camphor (3) Coal-tar (4) Diesel

Last Answer : Coal-tar

The chief source of naphthalene is – (1) Coal-tear (2) Diesel (3) Charcoal (4) Camphor

Description : The chief source of naphthalene is – (1) Coal-tear (2) Diesel (3) Charcoal (4) Camphor

Last Answer : (1) Coal-tear Explanation: Coal tar is a brown or black liquid of extremely high viscosity. In the coal gas era, there were many companies in Britain whose business was to distill coal ... of naphtha (a broad term encompassing any volatile, flammable liquid hydrocarbon mixture, including coal tar).

Moth balls contain: w) formalin x) chitin (pron: kite-en) y) formaldehyde z) naphthalene

Description : Moth balls contain: w) formalin x) chitin (pron: kite-en) y) formaldehyde z) naphthalene

Last Answer : ANSWER: Z -- NAPHTHALENE

Naphthalene recovered from coke oven gas is used (A) As moisture proof coating on fibres(B) As moth balls (insecticides)(C) As a fuel in furnaces(D) For making electrodes

Description : Naphthalene recovered from coke oven gas is used (A) As moisture proof coating on fibres (B) As moth balls (insecticides) (C) As a fuel in furnaces (D) For making electrodes

Last Answer : (C) As a fuel in furnaces

Naphthalene is used for making (A) Insecticides (e.g. moth balls) (B) Unsaturated polyesters (C) Drug intermediates e.g. β-naphthol (D) All (A), (B) and (C)

Description : Naphthalene is used for making (A) Insecticides (e.g. moth balls) (B) Unsaturated polyesters (C) Drug intermediates e.g. β-naphthol (D) All (A), (B) and (C)

Last Answer : (D) All (A), (B) and (C)

Which of the following cannot be purified by sublimation? (a) Iodine (b) Camphor (c) Citric acid (d) Naphthalene

Description : Which of the following cannot be purified by sublimation? (a) Iodine (b) Camphor (c) Citric acid (d) Naphthalene

Last Answer : Ans:(c)

Which of the following fractions of coal-tar distillation contains naphthalene? (a) Light oil (b) Middle oil (c) Heavy oil (d) Anthracene oil

Description : Which of the following fractions of coal-tar distillation contains naphthalene? (a) Light oil (b) Middle oil (c) Heavy oil (d) Anthracene oil

Last Answer : Middle oil

Dust of Snow‘ here means- (a) Balls of snow (b) Pebbles (c) Flakes of snow (d) None of the above

Description : Dust of Snow‘ here means- (a) Balls of snow (b) Pebbles (c) Flakes of snow (d) None of the above

Last Answer : (c) Flakes of snow

How many moth balls do you put in closet?

Description : How many moth balls do you put in closet?

Last Answer : Don't put more than a couple at a time. Otherwise, from experience, you may find your wife complaining of the smell when wearing the suit for the first in a long time! Funnily enough, from childhood memories, my dad often smelled funny when we had a family Liverpool gathering - it was the mothballs!

What is the chemical content of moth balls?

Description : What is the chemical content of moth balls?

Last Answer : Naphthalene

A fuel of cetane number 40 has the same ignition quality as a mixture of a) 40% cetane and 60% alpha methyl naphthalene b) 40% alpha methyl naphthalene and 60% cetane c) 40% petrol and 60% diesel d) 40% diesel and 60% petrol

Description : A fuel of cetane number 40 has the same ignition quality as a mixture of a) 40% cetane and 60% alpha methyl naphthalene b) 40% alpha methyl naphthalene and 60% cetane c) 40% petrol and 60% diesel d) 40% diesel and 60% petrol

Last Answer : Answer: a Explanation: A fuel of cetane number 40 has the same ignition quality as a mixture of 40% cetane and 60% alpha methyl naphthalene as cetane number is counted on cetane percentage.

The two reference fuel used for cetane rating are (a) Cetane and iso octane (b) Cetane and tetra ethyl lead (c) Cetance and n-heptane (d) Cetane and α- methyl naphthalene

Description : The two reference fuel used for cetane rating are (a) Cetane and iso octane (b) Cetane and tetra ethyl lead (c) Cetance and n-heptane (d) Cetane and α- methyl naphthalene

Last Answer : Ans : d

Reference fuels for knock rating of SI engine fuels would include (a) Iso octane alpha methyl naphthalene (b) Normal octance and aniline (c) Isooctance and n octane (d) N heptane and iso octane

Description : Reference fuels for knock rating of SI engine fuels would include (a) Iso octane alpha methyl naphthalene (b) Normal octance and aniline (c) Isooctance and n octane (d) N heptane and iso octane

Last Answer : Ans : d

Cetane number of alpha methyl naphthalene is assumed to be (A) 0 (B) 100 (C) 50 (D) ∞

Description : Cetane number of alpha methyl naphthalene is assumed to be (A) 0 (B) 100 (C) 50 (D) ∞

Last Answer : (A) 0

Iso-octane is used as a reference substance in the definition of octane number and it is assigned an octane number value of 100. Iso-octane is chemically known as (A) α-methyl naphthalene (B) 2-2-4 tri methyl pentane (C) 1, 3 butadiene (D) Tetra methyl ethylene

Description : Iso-octane is used as a reference substance in the definition of octane number and it is assigned an octane number value of 100. Iso-octane is chemically known as (A) α-methyl naphthalene (B) 2-2-4 tri methyl pentane (C) 1, 3 butadiene (D) Tetra methyl ethylene

Last Answer : (B) 2-2-4 tri methyl pentane

Naphthols are derivates of (A) Methyl amine (B) Naphthalene (C) Phenol (D) Xylene

Description : Naphthols are derivates of (A) Methyl amine (B) Naphthalene (C) Phenol (D) Xylene

Last Answer : (B) Naphthalene

Pick up the correct statement from the following: (A) Alexander Parkes, a Scottish chemist prepared a hard material by mixing camphor and alcohol with nitro cellulose and called it, as Parkesite (B) Dr. L. Bakeland, a Belgian scientist prepared a product known as Bakelite (C) Pollark, an Austrian scientist prepared a substance from urea and formaldehyde and called it Plastic (D) All the above

Description : Pick up the correct statement from the following: (A) Alexander Parkes, a Scottish chemist prepared a hard material by mixing camphor and alcohol with nitro cellulose and called it, as Parkesite ... prepared a substance from urea and formaldehyde and called it Plastic (D) All the above

Last Answer : Answer: Option D

Starting material for the production of butadiene in India is (A) Naphthalene (B) Benzol (C) Ethyl alcohol (D) Phthalic anhydride

Description : Starting material for the production of butadiene in India is (A) Naphthalene (B) Benzol (C) Ethyl alcohol (D) Phthalic anhydride

Last Answer : (C) Ethyl alcohol

Starting material for the production of butadiene in India is (A) Naphthalene (B) Benzol(C) Ethyl alcohol(D) Phthalic anhydride

Description : Starting material for the production of butadiene in India is (A) Naphthalene (B) Benzol (C) Ethyl alcohol (D) Phthalic anhydride

Last Answer : (C) Ethyl alcohol

Maleic anhydride is produced by catalytic oxidation of (A) Toluene (B) Ethyl alcohol (C) Naphthalene (D) Benzene

Description : Maleic anhydride is produced by catalytic oxidation of (A) Toluene (B) Ethyl alcohol (C) Naphthalene (D) Benzene

Last Answer : (D) Benzene

Coal-tar is the main source of : (a) Aromatic compounds (b) Aliphatic compounds (c) Heterocyclic compounds (d) None of these

Description : Coal-tar is the main source of : (a) Aromatic compounds (b) Aliphatic compounds (c) Heterocyclic compounds (d) None of these

Last Answer : Aromatic compounds

Alcohol prepared by the distillation of wood is: (1) Propyl alcohol (2) Methyl alcohol (3) Ethyl alcohol (4) Glycerolx

Description : Alcohol prepared by the distillation of wood is: (1) Propyl alcohol (2) Methyl alcohol (3) Ethyl alcohol (4) Glycerolx

Last Answer : (2) Methyl alcohol Explanation: Alcohol prepared by the distillation of wood is Methyl alcohol. It is also called wood spirit.

Wood spirit is – (1) Methyl alcohol (2) Ethyl alcohol (3) Butyl alcohol (4) Propyl alcohol

Description : Wood spirit is – (1) Methyl alcohol (2) Ethyl alcohol (3) Butyl alcohol (4) Propyl alcohol

Last Answer : (1) Methyl alcohol Explanation: Methanol is also known as methyl alcohol, wood alcohol, wood naphtha or wood spirits. It acquired the name "wood alcohol" because it was once produced ... is produced in a catalytic industrial process directly from carbon monoxide, carbon dioxide, and hydrogen.

Which is used in preparation of dynamite? (1) glycerol (2) ethyl alcohol (3) methyl alcohol (4) glycol

Description : Which is used in preparation of dynamite? (1) glycerol (2) ethyl alcohol (3) methyl alcohol (4) glycol

Last Answer : (1) glycerol Explanation: Dynamite is an explosive made of nitroglycerin, sorbents (such as powdered shells or clay) and stabilizers. It was invented by the Swedish chemist and engineer Alfred Nobel in Geesthacht, and patented in 1867.

During fermentation of sugar, the compound which is always formed is – (1) Methyl Alcohol (2) Ethyl Alcohol (3) Acetic Acid (4) Ethylene

Description : During fermentation of sugar, the compound which is always formed is – (1) Methyl Alcohol (2) Ethyl Alcohol (3) Acetic Acid (4) Ethylene

Last Answer : (2) Ethyl Alcohol Explanation: Fermentation is the conversion of sugar into car-bon dioxide has (CO2) and ethyl alcohol. This process is carried out by yeast cells using a range of enzymes.

Substance used as an anti-freeze in radiators of automobiles is : (1) Methyl alcohol and H2O (2) Methy] alcohol (3) Ethyl alcohol (4) Ethyl alcohol and H2O

Description : Substance used as an anti-freeze in radiators of automobiles is : (1) Methyl alcohol and H2O (2) Methy] alcohol (3) Ethyl alcohol (4) Ethyl alcohol and H2O

Last Answer : (1) Methyl alcohol and H2O Explanation: Methyl alcohol and water are used as an anti-freeze in radiators of automobiles.

Wood Spirit is which of the following? (1) Ethyl Alcohol (2) Propanol (3) Methyl Alcohol (4) Butanol

Description : Wood Spirit is which of the following? (1) Ethyl Alcohol (2) Propanol (3) Methyl Alcohol (4) Butanol

Last Answer : (3) Methyl Alcohol Explanation: Wood spirit (countable and uncountable, plural wood spirits) (countable) A dryad or other spiritual being associated with forests, woods, or trees. (Uncountable, often the wood spirit) Methyl Alcohol, a type of alcohol.

Which of the following is used to denature ethanol? (1) Methyl alcohol (2) Propyl alcohol (3) Phenol (4) Methane

Description : Which of the following is used to denature ethanol? (1) Methyl alcohol (2) Propyl alcohol (3) Phenol (4) Methane

Last Answer : (1) Methyl alcohol Explanation: Denatured alcohol is ethanol that has additives to make it undrinkable (poisonous), to discourage recreational consumption. Different additives are used to make it difficult. to ... both because its boiling point is close to that of ethanol and because it is toxic.

Which among the following is used in making liquors, medicines and as a fuel in aircrafts? (1) Propyl alcohol (2) Dimethyl alcohol (3) Ethyl alcohol (4) Methyl alcohol

Description : Which among the following is used in making liquors, medicines and as a fuel in aircrafts? (1) Propyl alcohol (2) Dimethyl alcohol (3) Ethyl alcohol (4) Methyl alcohol

Last Answer : (3) Ethyl alcohol Explanation: Ethyl alcohol (C2H5), also known as ethanol, is a member of a class of organic compounds that are given the general name alcohols.

Which is used in preparation of dynamite? (1) glycerol (2) ethyl alcohol (3) methyl alcohol (4) glycol

Description : Which is used in preparation of dynamite? (1) glycerol (2) ethyl alcohol (3) methyl alcohol (4) glycol

Last Answer : (1) glycerol Explanation: Dynamite is an explosive made of nitroglycerin, sorbents (such as powdered shells or clay) and stabilizers. It was invented by the Swedish chemist and engineer Alfred Nobel in Geesthacht, and patented in 1867.

Aspirin is produced by heating salicylic acid with (a) acetic anhydride in the presence of phosphoric acid (b) benzoic anhydride in the presence of phosphoric acid (c) methyl alcohol in the presence of sulfuric acid (d) phenol in the presence of sulfuric acid

Description : Aspirin is produced by heating salicylic acid with (a) acetic anhydride in the presence of phosphoric acid (b) benzoic anhydride in the presence of phosphoric acid (c) methyl alcohol in the presence of sulfuric acid (d) phenol in the presence of sulfuric acid

Last Answer : acetic anhydride in the presence of phosphoric acid

Acetic acid reacts with methyl alcohol in the presence of an acid catalyst to give (a) Methyl formate (b) Ethyl formate (c) Methyl acetate (d) Ethyl acetate

Description : Acetic acid reacts with methyl alcohol in the presence of an acid catalyst to give (a) Methyl formate (b) Ethyl formate (c) Methyl acetate (d) Ethyl acetate

Last Answer : Methyl acetate

Which of the following statements is false? (a) Diethyl ether has been used as a general anesthetic (b) Ethyl alcohol is present in all alcoholic beverages (c) Methyl alcohol is produced by fermentation of sugars (d) Ethylene glycol is a common antifreeze for automobiles

Description : Which of the following statements is false? (a) Diethyl ether has been used as a general anesthetic (b) Ethyl alcohol is present in all alcoholic beverages (c) Methyl alcohol is produced by fermentation of sugars (d) Ethylene glycol is a common antifreeze for automobiles

Last Answer : Methyl alcohol is produced by fermentation of sugars

Ethyl bromide reacts with sodium methoxide to form (a) Diethyl ether (b) Ethyl methyl ether (c) Dimethyl ether (d) n-Propyl alcohol

Description : Ethyl bromide reacts with sodium methoxide to form (a) Diethyl ether (b) Ethyl methyl ether (c) Dimethyl ether (d) n-Propyl alcohol

Last Answer : Ethyl methyl ether

Which of the following is a secondary alcohol? (a) 3-ethyl-2-methyl-1-pentanol (b) 3-ethyl-2-methyl-2-heptanol (c) 3-methyl-2-hexanol (d) 1-hexanol

Description : Which of the following is a secondary alcohol? (a) 3-ethyl-2-methyl-1-pentanol (b) 3-ethyl-2-methyl-2-heptanol (c) 3-methyl-2-hexanol (d) 1-hexanol

Last Answer : 3-methyl-2-hexanol

Grain alcohol is another name for (a) Methyl alcohol (b) Isopropyl alcohol (c) Ethyl alcohol (d) n-Propyl alcoho

Description : Grain alcohol is another name for (a) Methyl alcohol (b) Isopropyl alcohol (c) Ethyl alcohol (d) n-Propyl alcoho

Last Answer : Ethyl alcohol

Carbylamine test involves heating a mixture of (a) alcoholic KOH, methyl iodide, and sodium metal (b) alcoholic KOH, methyl iodide, and primary amine (c) alcoholic KOH, chloroform, and primary amine (d) alcoholic KOH, methyl alcohol, and primary amine

Description : Carbylamine test involves heating a mixture of (a) alcoholic KOH, methyl iodide, and sodium metal (b) alcoholic KOH, methyl iodide, and primary amine (c) alcoholic KOH, chloroform, and primary amine (d) alcoholic KOH, methyl alcohol, and primary amine

Last Answer : alcoholic KOH, chloroform, and primary amine

Based on the intermolecular forces involved, which of the following molecules will have the lowest boiling point? w) ethane x) methyl alcohol y) methyl amine z) methyl fluoride

Description : Based on the intermolecular forces involved, which of the following molecules will have the lowest boiling point? w) ethane x) methyl alcohol y) methyl amine z) methyl fluoride

Last Answer : ANSWER: W -- ethane

During fermentation of sugar, the compound which is always formed is : (1) Methyl Alcohol (2) Ethyl Alcohol (3) Acetic Acid (4) Ethylene

Description : During fermentation of sugar, the compound which is always formed is : (1) Methyl Alcohol (2) Ethyl Alcohol (3) Acetic Acid (4) Ethylene

Last Answer : Ethyl Alcohol

Substance used as an anti - freeze in radiators of automobiles is : (1) Methyl alcohol and H2O (2) Methyl alcohol (3) Ethyl alcohol (4) Ethyl alcohol and H2O

Description : Substance used as an anti - freeze in radiators of automobiles is : (1) Methyl alcohol and H2O (2) Methyl alcohol (3) Ethyl alcohol (4) Ethyl alcohol and H2O

Last Answer : Methyl alcohol and H2O

Alcohol prepared by the distillation of wood is : (1) Propyl alcohol (2) Methyl alcohol (3) Ethyl alcohol (4) Glycerolx

Description : Alcohol prepared by the distillation of wood is : (1) Propyl alcohol (2) Methyl alcohol (3) Ethyl alcohol (4) Glycerolx

Last Answer : Methyl alcohol

Wood spirit is (1) Methyl alcohol (2) Ethyl alcohol (3) Butyl alcohol (4) Propyl alcohol

Description : Wood spirit is (1) Methyl alcohol (2) Ethyl alcohol (3) Butyl alcohol (4) Propyl alcohol

Last Answer : Methyl alcohol

Which of the following is used to denature ethanol ? (1) Methyl alcohol (2) Propyl alcohol (3) Phenol (4) Methane

Description : Which of the following is used to denature ethanol ? (1) Methyl alcohol (2) Propyl alcohol (3) Phenol (4) Methane

Last Answer : Methyl alcohol

The main constituent of biogas is (1) oxygen (2) methane (3) acetic acid (4) methyl alcohol

Description : The main constituent of biogas is (1) oxygen (2) methane (3) acetic acid (4) methyl alcohol

Last Answer : methane

When formaldehyde and potassium hydroxide are heated, we get (1) Acetylene (2) Methyl alcohol (3) Methane (4) Ethyl formate

Description : When formaldehyde and potassium hydroxide are heated, we get (1) Acetylene (2) Methyl alcohol (3) Methane (4) Ethyl formate

Last Answer : Methyl alcohol

Name a suitable technique of separation of the components from a mixture of calcium sulphate and camphor.

Description : Name a suitable technique of separation of the components from a mixture of calcium sulphate and camphor.

Last Answer : The components from a mixture of calcium sulphate and camphor can be separated by the process of sublimation.

Why camphor is used in molecular mass determination ?

Description : Why camphor is used in molecular mass determination ?

Last Answer : Ans. Because it has very high cryoscopic constant. It has large depression in m. p. when an organic solute is dissolved in it.