Description : Direct reaction of unsaturated hydrocarbons with either NO or NO2 produces an eye irritating pollutant compound known as (A) Photochemical smog (B) Peroxyacetyl nitrate (PAN) or methyl nitrite (C) Benzopyrene (D) Polyacrylonitrile
Last Answer : (B) Peroxyacetyl nitrate (PAN) or methyl nitrite
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.
Description : Which of the following emissions in the exhaust gas of an I.C. engine causes the formation of photochemical smog? (A) Nitrogen oxides (B) Hydrocarbons (C) Both 'a' & 'b' (D) Carbon monoxide
Last Answer : (C) Both 'a' & 'b'
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
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.
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.
Description : Catalyst used in the 'catalytic converter' employed in automobile exhaust line for complete combustion/oxidation of carbon monoxide, nitrogen oxides and hydrocarbons is (A) Alumina (B) Platinum (C) Vanadium pentoxide (D) Iron oxide
Last Answer : Option B
Description : The smog in cities in India mainly consists of (A) Oxides Of sulphur (B) Oxides of nitrogen and unburnt hydrocarbons (C) Carbon monoxide and SPM (D) Oxides of sulphur and ozone
Last Answer : (B) Oxides of nitrogen and unburnt hydrocarbons
Description : Which of the following pollutants is not emitted from the transport sector? (A) Oxides of nitrogen (B) Chlorofluorocarbons (C) Carbon monoxide (D) Poly aromatic hydrocarbons
Last Answer : (B) Chlorofluorocarbons
Description : Which of the following in automobile exhaust can cause cancer? (1) Oxides of nitrogen (2) Carbon monoxide (3) Lead (4) Polyclinic hydrocarbons
Last Answer : Polyclinic hydrocarbons
Last Answer : Lead
Description : Which of the following are responsible for the formation of photochemical smog ? 1. Light intensity 2. Ratio of hydrocarbons to nitric oxide 3. CO2 4. Hydrocarbon reactivity 5. SO2 (a) 1, 2, 3, 4 and 5 (b) 1, 2 and 4 only (c) 2, 3 and 4 only (d) 2, 3 and 5 only
Last Answer : (b) 1, 2 and 4 only
Description : Unsaturated hydrocarbons with triple bond?
Last Answer : Alkynes
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
Description : Olefins are (A) Saturated hydrocarbons (B) Unsaturated cyclic compounds (hydrocarbons) (C) Present in substantially good quantity in crude petroleum (D) None of these
Last Answer : (D) None of these
Description : The unsaturated hydrocarbons having one triple bond between carbon atoms are
Last Answer : alkynes.
Description : The unsaturated hydrocarbons having double bond between carbon atom are
Last Answer : alkene.
Description : Classify the following into saturated and unsaturated hydrocarbons – Benzene, cyclopropane, alkene and alkane, methane, ethene, Propyne, butene
Last Answer : Saturated: Alkane, cyclopropane, methane Unsaturated: Benzene, alkene, ethene, Propyne, butene
Description : Mention the differences between saturated and unsaturated hydrocarbons.
Last Answer : Saturated hydrocarbons 1. Hydrocarbons in which carbon atoms are linked by single covalent bonds. 2. Names of these hydrocarbons end with ane'. Unsaturated hydrocarbons 1. Hydrocarbons in which carbon ... and triple covalent bonds. 2. Names of these hydrocarbons end with ene' or yne'
Description : With increase in the time of carbonisation at a particular temperature(say 1000°C), the __________ percentage in coke oven gas increases. (A) Hydrogen (B) Methane (C) Unsaturated hydrocarbons (D) All (A), (B) and (C)
Last Answer : (A) Hydrogen
Description : Which of the following are correct statements concerning unsaturated hydrocarbons? (a) All unsaturated hydrocarbons are insoluble in water. (b) All unsaturated hydrocarbons are soluble in nonpolar solvents. (c) All unsaturated hydrocarbons are more dense than water. (d) (a) & (c)
Last Answer : (a) & (c)
Description : Statement I Nitrogen and oxygen are the main components in the atmosphere but these do not react to form oxides of nitrogen. Statement II The reaction
Last Answer : Statement I Nitrogen and oxygen are the main components in the atmosphere but these do not react ... D. Both are assertion and reason are incorrect
Description : Nitrous oxide, commonly called laughing gas, has been a matter of concern to environmentalists recently because: w) it is thought to cause cancer at low concentrations. x) it produces photochemical smog. y) it is a greenhouse gas. z) none of the above
Last Answer : ANSWER: Y -- IT IS A GREENHOUSE GAS.
Description : The yellow colour in photochemical smog is due to the presence of------? A. Sulphur dioxide B. Carbon dioxide C. Nitrogen dioxide (Answer) D. CFC’s
Last Answer : C. Nitrogen dioxide (Answer)
Description : Photochemical smog pollution does not contain (a) PAN (peroxyacyl nitrate) (b) ozone (c) nitrogen dioxide (d) carbon dioxide.
Last Answer : (d) carbon dioxide.
Description : Which is a secondary air pollutant? (A) Photochemical smog (B) Sulphur dioxide (C) Nitrogen dioxide (D) Dust particles
Last Answer : (A) Photochemical smog
Description : Which of the following is a secondary air pollutant? (A) Photochemical smog (B) Sulphur dioxide (C) Nitrogen dioxide (D) Dust particles
Description : Fluorosis (a bone disease) is caused by the presence of high concentration of __________ in atmospheric air. (A) Hydrocarbons (B) Hydrogen fluoride (C) Hydrogen sulphides (D) Nitrogen dioxide
Last Answer : (B) Hydrogen fluoride
Description : Hydrocarbons are (a) Composed of carbon and hydrogen (b) Composed of carbon, hydrogen, and oxygen (c) Composed of carbon and oxygen (d) Composed of carbon and nitrogen
Last Answer : Composed of carbon and hydrogen
Description : Effects of nitrogen oxides on health? -Biology
Last Answer : answer:
Description : Nitrogen oxides produced from the emission of automibiles and power plants are the source of fine air borne particles which lead to:
Last Answer : Nitrogen oxides produced from the emission of automibiles and power plants are the source of fine air ... C. Wet acid deposition D. Industrial smog.
Description : Oxides of sulphur and nitrogen are important pollutants of :
Last Answer : Oxides of sulphur and nitrogen are important pollutants of : A. Water B. air C. Soil D. All of the above
Description : The enthalpy changes of formation of the gaseous oxides of nitrogen `(N_(2)O` and `NO)` are positive because of `:`
Last Answer : The enthalpy changes of formation of the gaseous oxides of nitrogen `(N_(2)O` and `NO)` are positive ... The tendency of oxygen to form `O^(2-)`
Description : Nitrogen oxides released in the stratosphere causes ozone depletion due to
Last Answer : Nitrogen oxides released in the stratosphere causes ozone depletion due to A. catalysing conversion of ... . reacting with ozone D. All the above
Description : Nitrogen forms the largest number of oxides as it is capable of forming stable multiple bonds with oxygen. They range from `N_(2)O` (O.S of nitrogen +
Last Answer : Nitrogen forms the largest number of oxides as it is capable of forming stable multiple bonds with ... red D. Nitrogen dioxide is not acidic oxide
Description : Nitrogen forms the largest number of oxides as it is capable of forming stable multiple bonds with oxygen. They range of `N_(2)O` (O.S of nitrogen +1)
Last Answer : Nitrogen forms the largest number of oxides as it is capable of forming stable multiple bonds with oxygen. They range ... C. `NO_(2)` D. both A and C
Description : How many of the following properties increase down the group for nitrogen family (a) Atomic size (b) Acidic character of oxides (c) Boiling point of h
Last Answer : How many of the following properties increase down the group for nitrogen family (a) Atomic ... Metallic character (g) Basic character of hydrides
Description : Which of the following oxides of Nitrogen is Neutral
Last Answer : Which of the following oxides of Nitrogen is Neutral A. `N_(2)O_(5)` B. `N_(2)O_(3)` C. `N_(2)O_(4)` D. `N_(2)O`
Description : Nitrogen oxides produced from the emission of automobiles and power plants are the source of fine air borne particles which lead to
Last Answer : Nitrogen oxides produced from the emission of automobiles and power plants are the source of fine air ... C. Industrial smog D. Wet acid deposition
Description : Which plant has the maximum power of absorbing `CO_(2)` and oxides of nitrogen in a polluted area?
Last Answer : Which plant has the maximum power of absorbing `CO_(2)` and oxides of nitrogen in a ... Coleus indica C. Robinia pseudoacacia D. Daucus carota
Description : Which of the following is/are not the characteristics of red soils? 1. They are derived from weathering of old crystalline and metamorphic rocks 2. They contain iron oxides 3. They have high water retention capacity 4. They ... nitrogen content (a) II and III (b) Only III (c) Only IV (d) III and IV
Last Answer : Ans: (d)
Description : Which one of the following is the main culprit in the thinning of Ozone layer in the earth’s stratosphere? A. Methane B. Chlorofluorocarbons C. Nitrogen oxides D. Carbon dioxide
Last Answer : ANSWER: C
Description : (3) Oxides of nitrogen and sulphur Explanation: Acid rain is caused by emissions of oxides of Sulfur and Nitrogen (Sulfur Dioxide and Nitrogen Oxide), which react with the water molecules in the ... The emissions of sulfur dioxide (SO2) and nitrogen oxides (NOx) result from fossil fuel combustion.
Last Answer : (3) live wire and the neutral wire Explanation: Three wires enter most homes from the power pole-two "hot" wires and a third "neutral" wire. Each hot wire provides 120- volt current for ... the main switch is put off because the electric circuit (the path where the electricity travels) gets opened.