Effects of hydrocarbons on human health? -Biology

Effects of hydrocarbons on human health? -Biology
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Effects of hydrocarbons on human health? -Biology

Description : Effects of hydrocarbons on human health? -Biology

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Lung cancer & DNA breakage are the major ill effects of excessive ozone exposure to human beings. Ozone layer depletion in the atmosphere is mainly caused by the presence of (A) CO2 (B) SO2 (C) Hydrocarbons (D) CFC (chloro fluoro carbon)

Description : Lung cancer & DNA breakage are the major ill effects of excessive ozone exposure to human beings. Ozone layer depletion in the atmosphere is mainly caused by the presence of (A) CO2 (B) SO2 (C) Hydrocarbons (D) CFC (chloro fluoro carbon)

Last Answer : (D) CFC (chloro fluoro carbon)

Tobacco smoke is injurious to health because it contains : (1) Carbon monoxide (2) Nicotine (3) Polycyclic aromatic hydrocarbons (4) Melathene

Description : Tobacco smoke is injurious to health because it contains : (1) Carbon monoxide (2) Nicotine (3) Polycyclic aromatic hydrocarbons (4) Melathene 

Last Answer : Carbon monoxide

Effects of carbon monoxide (CO) on human health? -Biology

Description : Effects of carbon monoxide (CO) on human health? -Biology

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Effects of water pollution on human health and environment? -Biology

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Effects of Chlorofluorocarbons on human health? -Biology

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Effects of particulates on human health? -Biology

Description : Effects of particulates on human health? -Biology

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Effects of water pollution on human health and environment? -Biology

Description : Effects of water pollution on human health and environment? -Biology

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Effects of carbon monoxide (CO) on human health? -Biology

Description : Effects of carbon monoxide (CO) on human health? -Biology

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Effects of Chlorofluorocarbons on human health? -Biology

Description : Effects of Chlorofluorocarbons on human health? -Biology

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Effects of particulates on human health? -Biology

Description : Effects of particulates on human health? -Biology

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In human body, the chlorinated hydrocarbons keep on accumulating in:

Description : In human body, the chlorinated hydrocarbons keep on accumulating in:

Last Answer : In human body, the chlorinated hydrocarbons keep on accumulating in: A. Bones B. Brain C. Fatty tissue D. Skin.

Effects of nitrogen oxides on health? -Biology

Description : Effects of nitrogen oxides on health? -Biology

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Effects of nitrogen oxides on health? -Biology

Description : Effects of nitrogen oxides on health? -Biology

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With hydrocarbons, is chlorine the ONLY atom powerful enough to remove a hydrogen atom from an alkane?

Description : With hydrocarbons, is chlorine the ONLY atom powerful enough to remove a hydrogen atom from an alkane?

Last Answer : (Disclaimer: I had organic chemistry 10 years ago, so you may want to back this up with some googling) Flourine reacts with alkanes, but it is so reactive it is unpredictable; you don't know ... . It seems like you can get the more powerful acids to react with alkanes under the right conditions.

Most of hydrocarbons from petroleum are obtained by which method? -General Knowledge

Description : Most of hydrocarbons from petroleum are obtained by which method? -General Knowledge

Last Answer : The answer is 'Fractional distillation'

Most of hydrocarbons from petroleum are obtained by which method? -General Knowledge

Description : Most of hydrocarbons from petroleum are obtained by which method? -General Knowledge

Last Answer : answer:

aliphotic Hydrocarbons What ?

Last Answer : Aromatic Featureless To hydrocarbons Aliphatic Hydrocarbons Says.

Photochemical reaction of nitrogen oxides with unsaturated hydrocarbons produces

Description : Photochemical reaction of nitrogen oxides with unsaturated hydrocarbons produces

Last Answer : Photochemical reaction of nitrogen oxides with unsaturated hydrocarbons produces A. methyl isocyanate B. ... C. Benzpyrene D. peroxy-acyl nitrates.

The products resulting from the atmospheric reactions of hydrocarbons and nitrogen oxides in the presence of sunlight are called

Description : The products resulting from the atmospheric reactions of hydrocarbons and nitrogen oxides in the presence of sunlight are called

Last Answer : The products resulting from the atmospheric reactions of hydrocarbons and nitrogen oxides in the ... C. Tertiary pollutants D. Non-pollutants

Which of the following statement is correct? (i) Sweat is waxy protective secretion having sterols, hydrocarbons and fatty acids (ii) Sebum is an aque

Description : Which of the following statement is correct? (i) Sweat is waxy protective secretion having sterols, hydrocarbons and fatty acids (ii) Sebum is an aque

Last Answer : Which of the following statement is correct? (i) Sweat is waxy protective secretion having sterols, hydrocarbons and ... i C. i and ii D. i and iii

What element do hydrocarbons sometimes contain in stead of hydrogen and carbon?

Description : What element do hydrocarbons sometimes contain in stead of hydrogen and carbon?

Last Answer : Need answer

When during fractional distillation hydrocarbons are separated according to their?

Description : When during fractional distillation hydrocarbons are separated according to their?

Last Answer : Fractional distillation separates substances according to theirboiling point.

What are characteristic of aromatic hydrocarbons?

Description : What are characteristic of aromatic hydrocarbons?

Last Answer : Principal characteristics of aromatic hydrocarbons are:- the contain benzenic rings- frequently they have an agreeable odor- they burn with soot; this is a disadvantage- the ratio carbon/hydrogen is great

What are hydrocarbons with only a single bond called?

Description : What are hydrocarbons with only a single bond called?

Last Answer : Alkanes are hydrocarbon atoms that have only single covalent bond.

What are aliphatic hydrocarbons?

Description : What are aliphatic hydrocarbons?

Last Answer : Aliphatic hydrocarbons are not aromatic compounds.

In neutral fats, the unsaponificable matter includes (A) Hydrocarbons (B) Triacylglycerol (C) Phospholipids (D) Cholsesterol

Description : In neutral fats, the unsaponificable matter includes (A) Hydrocarbons (B) Triacylglycerol (C) Phospholipids (D) Cholsesterol

Last Answer : Answer : A

Octane number of gasoline is obtained by comparing the performance of the engine when running on a mixture of the following hydrocarbons A. ethane and methane B. normal heptane and iso-octane C. iso-heptane and octane D. iso-octane and TEL

Description : Octane number of gasoline is obtained by comparing the performance of the engine when running on a mixture of the following hydrocarbons A. ethane and methane B. normal heptane and iso-octane C. iso-heptane and octane D. iso-octane and TEL

Last Answer : ANSWER : B

Hydrocarbons are decomposed into smaller hydrocarbons by a) reforming b) refining c) cracking d) polymerization

Description : Hydrocarbons are decomposed into smaller hydrocarbons by a) reforming b) refining c) cracking d) polymerization

Last Answer : Answer: c Explanation: Hydrocarbons are decomposed into smaller hydrocarbons by cracking while the molecular structure of the straight-run gasoline is changed by reforming.

The plants popularly known as 'petro crops' are rich in 1. Carbohydrates 2. Hydrocarbons 3. Proteins 4. Lipids The correct answer is: (a) 1, 2 and 3 (b) 1, 3 and 4 (c) 2, 3 and 4 (d) 2 and 4

Description : The plants popularly known as 'petro crops' are rich in 1. Carbohydrates 2. Hydrocarbons 3. Proteins 4. Lipids The correct answer is: (a) 1, 2 and 3 (b) 1, 3 and 4 (c) 2, 3 and 4 (d) 2 and 4

Last Answer : Ans:(d)

Liquid hydrocarbons are converted to low molecular weight gaseous hydrocarbons by a process known as (a) hydrogenation (b) reforming (c) cracking (d) reduction

Description : Liquid hydrocarbons are converted to low molecular weight gaseous hydrocarbons by a process known as (a) hydrogenation (b) reforming (c) cracking (d) reduction

Last Answer : Ans:(c)

Cooking gas supplied in cylinders by gas agencies is 1. In the form of a liquid 2. In the form of a gas 3. A mixture of hydrocarbons 4. A heterogeneous solution The correct statements are: (a) 1 and 3 (b) 2 only (c) 3 and 4 (d) 1 and 4

Description : Cooking gas supplied in cylinders by gas agencies is 1. In the form of a liquid 2. In the form of a gas 3. A mixture of hydrocarbons 4. A heterogeneous solution The correct statements are: (a) 1 and 3 (b) 2 only (c) 3 and 4 (d) 1 and 4

Last Answer : Ans:(a)

The organic matter present in soil is known collectively as – (1) Hydrocarbons (2) Podsols (3) Humus (4) Colloids

Description : The organic matter present in soil is known collectively as – (1) Hydrocarbons (2) Podsols (3) Humus (4) Colloids

Last Answer : (3) Humus Explanation: The organic matter present in soil is known collectively as humus. Humus is fully decomposed and finely divided organic matter. Dune is a hill or ridge of sand accumulated and sorted by wind action.

Deep fried food materials are carcinogenic because they are rich in - (1) Fats (2) Hydrocarbons (3) Cooking oil (4) Nicotine

Description : Deep fried food materials are carcinogenic because they are rich in - (1) Fats (2) Hydrocarbons (3) Cooking oil (4) Nicotine

Last Answer : (2) Hydrocarbons Explanation: If foods are overheated or burnt, a group of carcinogenic substances called polycyclic aromatic hydrocarbons (PAHs) are produced. PAHs represent a very large group of ... , PAHs can be absorbed in the intestine and distributed to other organs through blood circulation.

Synthetic detergents are prepared from (1) potassium salts of higher fatty-acids (2) sodium salts of higher fat acids (3) hydrocarbons of petroleum (4) glycerides

Description : Synthetic detergents are prepared from (1) potassium salts of higher fatty-acids (2) sodium salts of higher fat acids (3) hydrocarbons of petroleum (4) glycerides

Last Answer : (3) hydrocarbons of petroleum Explanation: Synthetic detergents are prepared from hydrocarbons of petroleum. They are sodium salts of long chain benzene sulphonic acids or sodium salts of long chain ... are soluble in water. Therefore cleansing action of detergents remains unaffected in hard water.

Saturated hydrocarbons are called - (1) Alkynes (2) Alkenes (3) Alkanes (4) All of the above

Description : Saturated hydrocarbons are called - (1) Alkynes (2) Alkenes (3) Alkanes (4) All of the above

Last Answer : (3) Alkanes Explanation: Carbon compounds which contain just carbon and hydrogen are called hydrocarbons. Among these, the saturated hydrocarbons are called alkanes. The unsaturated hydrocarbons which contain one or more double bonds are called alkenes.

Which of the following is usually not an air-pollutant? (1) Hydrocarbons (2) Sulphur dioxide (3) Carbon dioxide (4) Nitrous oxide

Description : Which of the following is usually not an air-pollutant? (1) Hydrocarbons (2) Sulphur dioxide (3) Carbon dioxide (4) Nitrous oxide

Last Answer : (4) Nitrous oxide Explanation: The six air pollutants are carbon monoxide, lead, ground-level ozone, nitrogen dioxide, particulate matter, and sulfur dioxide. The combustion of gasoline and other ... as laughing gas, is used in surgery and dentistry for its an-aesthetic and analgesic effects.

Which of the following is produced during the formation of photochemical smog? (1) Nitrogen Oxides (2) Hydrocarbons (3) Methane (4) Ozone

Description : Which of the following is produced during the formation of photochemical smog? (1) Nitrogen Oxides (2) Hydrocarbons (3) Methane (4) Ozone

Last Answer : (4) Ozone Explanation: Ozone is produced during the formation of photochemical smog. Photochemical smog is a mixture of pollutants that are formed when nitrogen oxides and volatile organic compounds (VOCs) react to sunlight, creating a brown haze above cities.

Substances that cause a reaction to occur or proceed at a different rate without the reaction itself being affected are called - (1) Catalysts (2) Hydrocarbons (3) Oxidising agents (4) Substitutes

Description : Substances that cause a reaction to occur or proceed at a different rate without the reaction itself being affected are called - (1) Catalysts (2) Hydrocarbons (3) Oxidising agents (4) Substitutes

Last Answer : (1) Catalysts Explanation: Catalysts are substances that cause a reaction to occur or proceed at a different rate without the reaction itself being affected. Eg: hydrogenation of vegetable oils using a nickel catalyst.

Which hydrocarbons are the major constituents of 'LPG'? (1) Methane and Ethane (2) Propane and Butane (3) Pentane and Benzene (4) Only Methane

Description : Which hydrocarbons are the major constituents of 'LPG'? (1) Methane and Ethane (2) Propane and Butane (3) Pentane and Benzene (4) Only Methane

Last Answer : (2) Propane and Butane Explanation: Cooking gas, also known as Liquefied Petroleum Gas (LPG) is primarily propane (C3Hg) and butane (C4H10).

Petroleum consists of a mixture of – (1) Carbohydrates (2) Carbonates (3) Hydrocarbons (4) Carbides

Description : Petroleum consists of a mixture of – (1) Carbohydrates (2) Carbonates (3) Hydrocarbons (4) Carbides

Last Answer : (3) Hydrocarbons Explanation: Petroleum (petroleum, from Latin: 'petra' (rock) + Latin: oleum (oil) or crude oil is a naturally occurring flammable liquid consisting of a complex mixture of ... variety of materials, and it is estimated that the world consumes about 88 million barrels each day.

Which of the following in auto-mobile exhaust can cause cancer? (1) Oxides of nitrogen (2) Carbon monoxide (3) Lead (4) Polyclinic hydrocarbons

Description : Which of the following in auto-mobile exhaust can cause cancer? (1) Oxides of nitrogen (2) Carbon monoxide (3) Lead (4) Polyclinic hydrocarbons

Last Answer : (2) Carbon monoxide Explanation: Polycyclic aromatic hydrocarbons (PAHs) are formed during incomplete combustion. Domestic wood burning and road traffic are the major sources of PAHs. Exposure ... reactive diol epoxide intermediates and their subsequent covalent binding to critical targets in DNA.

The constituents of automobile exhaust that can cause cancer is/are : (1) Oxides of nitrogen (2) Carbon monoxide (3) Polycyclic hydrocarbons (4) Lead

Description : The constituents of automobile exhaust that can cause cancer is/are : (1) Oxides of nitrogen (2) Carbon monoxide (3) Polycyclic hydrocarbons (4) Lead

Last Answer : (2) Carbon monoxide Explanation: Lead is a naturally occuriing bluish-gray metal found in small amounts in the earth's crust. In the past, when lead was added to gasoline, breathing automobile ... found to be carcinogen. A substance that causes cancer or helps cancer grow is called a carcinogen.

Wax used for making candle is chemically a mixture of – (1) aliphatic hydrocarbons (2) aromatic hydrocarbons (3) cyclic hydrocarbons (4) aliphatic and aromatic hydrocarbons

Description : Wax used for making candle is chemically a mixture of – (1) aliphatic hydrocarbons (2) aromatic hydrocarbons (3) cyclic hydrocarbons (4) aliphatic and aromatic hydrocarbons

Last Answer : (1) aliphatic hydrocarbons Explanation: An aliphatic compound is a hydrocarbon compound containing carbon and hydrogen joined together in straight chains, branched trains or non-aromatic rings ... naturally occurring. Waxes are organic compounds that characteristically consist of long alkyl chains.

Petroleum is a mixture of – (1) elements (2) hydrocarbons (3) polymers (4) salts

Description : Petroleum is a mixture of – (1) elements (2) hydrocarbons (3) polymers (4) salts

Last Answer : (2) hydrocarbons Explanation: Petroleum or crude oil is a naturally occurring flammable liquid consisting of a complex mixture of hydrocarbons of various molecular weights and other liquid ... zooplankton and algae, are buried underneath sedimentary rock and undergo intense heat and pressure.

Which one among the following is responsible for formation of "Ozone Holes" in the atmosphere? (1) Benzopyrene (2) Hydrocarbons (3) Chlorofluorocarbons (4) UV radiation

Description : Which one among the following is responsible for formation of "Ozone Holes" in the atmosphere? (1) Benzopyrene (2) Hydrocarbons (3) Chlorofluorocarbons (4) UV radiation

Last Answer : (3) Chlorofluorocarbons Explanation: Chlorofluorocarbon (CFCs), commonly known by the DuPont brand name Freon, are considered as one of the ozonedepleting substances.

Most of hydrocarbons from petroleum are obtained by which method?

Description : Most of hydrocarbons from petroleum are obtained by which method?

Last Answer : Fractional distillation

Unsaturated hydrocarbons with triple bond?

Description : Unsaturated hydrocarbons with triple bond?

Last Answer : Alkynes

Which one of the following processes aims at producing higher yield of gaseous unsaturated hydrocarbons and aromatics like benzene & toluene? (A) Reforming (B) Pyrolysis (C) Alkylation (D) Hydrocracking

Description : Which one of the following processes aims at producing higher yield of gaseous unsaturated hydrocarbons and aromatics like benzene & toluene? (A) Reforming (B) Pyrolysis (C) Alkylation (D) Hydrocracking

Last Answer : (A) Reforming

Which of the following hydrocarbons of same carbon atoms has minimum smoking tendency? (A) Paraffins (B) Naphthenes (C) Aromatics (D) Iso-paraffins

Description : Which of the following hydrocarbons of same carbon atoms has minimum smoking tendency? (A) Paraffins (B) Naphthenes (C) Aromatics (D) Iso-paraffins

Last Answer : (A) Paraffins