Carcinogenicity of Aromatics

Q. Chlorobenzene on reaction with $C{H}_{3}Cl$ in presence of anhydrous $AlC{l}_3$ gives predominantly :

1. 
2. 
3. 
4. None of the above

Q. The total number of electrons in the carbon atom of methyl free radical

Q. Which of the following compounds is soluble in benzene but insoluble in water?

1. Ethanol
2. Ethanoic acid
3. Ethanal
4. Toluene

Q.

Find the odd one out. Give a reason for your answer.

1. sewer water

2. chlorinated water

3. river water

4. waste water from factories

Q. 8. A cyclic dichloride has a total five constitutional plus geometrical isomers. Which of the following satisfy this condition without altering the carbon skeleton? 1- Dichloromethyl cyclopropane 2- Dichlorocyclopentane 3-Dichlorocyclobutane 4-Dichlorocyclohexane

Q.

A brick kiln emits a lot of smoke and other harmful gases causing air pollution. Correct if wrong statement.

1. True
2. False

Q. Gun-cotton is

1. Nitrosucrose

2. Nitropicrin

3. Nitrocellulose

4. Nitroglucose

Q.

What are aromatic hydrocarbons also known as?

Q. Which of the following is Sulphur containing artificial sweetner?

1. Saccharin
2. Sucralose
3. Aspartame
4. NutraSweet

Q. Most stable carbonium ion is:

1. $p-N{O}_2-C_6{H}_4-CH{{}_2}^{+}$
   
2. $C_6{H}_{5}C{H}_2^{+}$
   
3. $p-Cl-C_6{H}_4-CH{{}_2}^{+}$
   
4. $p-C{H}_{3}O-C_6{H}_4-C{H}_2^{+}$
   

Q. Which of the following polynuclear hydrocarbon is/are carcinogenic in nature?

1. 1, 2-Benzanthracene
2. 3-methylcholanthrene
3. All of the above
4. 1, 2-Benzpyrene

Q.

Is potassium chromate a carcinogen?

Q. Polynuclear hydrocarbons are non carcinogenic.

1. True
2. False

Q. Use of freons is not encouraged because

1. They eat away the ozone in the atmosphere
2. They destroy the oxygen layer
3. They damage the refrigerator and air conditioners
4. They are harmful to the eyes of people that use it

Q. The number and position of some groups have been found to influence the carcinogenic activity of polynuclear hydrocarbons. Which of the following groups are the above-mentioned groups?

1. $-C{H}_3$
2. $-OH$
3. $-OC{H}_3$
4. All of the above

Q. Name an important source from which naphthalene balls are obtained.

Q. 3.No of possible structures of amines C7H9N having one benzene ring is A_5 B_3 c_4 d_6

Q. Phenanthrene is a fused polycyclic compound containing ______ benzene rings.

1. three
2. four
3. two
4. five

Q. Polynuclear hydrocarbons are formed by complete combustion of organic materials.

1. True
2. False

Q. polycyclic aromatic hydrocarbon enters water through :

1. discharges from industries
2. discharges from waste water treatment plant
3. municipal solid waste treatment plant
4. all of these

Q. Which of the following structure polynuclear aromatic hydrocarbons possess?

1. Linear
2. Angular
3. Both $A$ and $B$
4. None of the above

Q. Polycyclic aromatic hydrocarbons enter our body via :

1. air contaminated by wild fire
2. air contaminated by coal tar
3. foods that have been grilled
4. all of these

Q. Polycyclic aromatic hydrocarbon are formed from:

1. incomplete combustion of coal
2. incomplete combustion of oil and gas
3. incomplete combustion of organic substance
4. all of these

Q. Polycyclic aromatic hydrocarbon enter air as release from :

1. volcanoes
2. forest fires
3. burning coal
4. automobile exhaust

Q. The most significant end point of polycyclic aromatic hydrocarbon is :

1. cancer
2. fever
3. tubercolosis
4. jaundice

Q. High boiling fluorescent fraction of coal tar causes asthma.

1. True
2. False

Q. People working with coal tar (prolonged exposure) suffer from heart diseases.

1. True
2. False

Q. Polynuclear hydrocarbons are non toxic.

1. True
2. False

Q. Increased incidences of lung, skin, and bladder cancers are associated with occupational exposure to PAHs

1. True
2. False

Q. Ozone depleting substances are :

1. polynuclear aromatic hydrocarbons
2. photochemical oxidants
3. chlorofluorocarbons
4. cadmium and lead