Description : Which of the following statements is False/Incorrect about nitrobenzene? (a) is formed by nitration of benzene at temperatures below 60°C. (b) can be further nitrated to give m-dinitrobenzene. (c) can be oxidized with KMnO4 to give benzoic acid. (d) can be reduced with Sn/HCl to give aniline.
Last Answer : can be oxidized with KMnO4 to give benzoic acid
Description : When a disulfide linkage is formed, the compound containing this new linkage has been __________. (a) hydrolyzed (b) dehydrated (c) electrolyzed (d) oxidized
Last Answer : oxidized
Description : When ethanol is treated with sodium metal : (a) Sodium ethoxide is formed (b) The sodium is oxidized (c) The acidic hydrogen in reduced (d) All these occu
Last Answer : All these occu
Description : The major carbon compound formed from the incomplete combustion of a hydrocarbon in air is (a) carbon dioxide (b) carbon monoxide (c) water (d) alkyl chains
Last Answer : carbon monoxide
Description : The reddish -brown gas formed when nitric oxide is oxidized by air is
Last Answer : The reddish -brown gas formed when nitric oxide is oxidized by air is A. `NO_(2)` B. `N_(2)O_(4)` C. `N_(2)O_(5)` D. `N_(2)O_(3)`
Description : If glucose-1-phosphate formed by glycogenoloysis in muscles is oxidized to CO2 and H2O, the energy yield will be (A) 2 ATP equivalents (B) 3 ATP equivalents (C) 4 ATP equivalents (D) 8 ATP equivalents
Last Answer : Answer : B
Description : In non shivering thermogenesis (A) Glucose is oxidized to lactate (B) Fatty acids uncouple oxidative phosphorylation (C) Ethanol is formed (D) ATP is burned for heat production
Description : The ratio that approximates the number of net molecule of ATP formed per mole of Glucose oxidized in presence of O2 to the net number formed in abscence of O2 is (A) 4 : 1 (B) 10 : 2 (C) 12 : 1 (D) 18 : 1
Last Answer : B
Description : R&D completion time depends on a. number of projects in R&D. b. automation rating. c. similarity to existing products. d. size of the product. e. a, b, and c.
Last Answer : e. a, b, and c.
Description : R&D completion time can be diminished a. by repositioning a product. b. the more a company changes a product’s MTBF. c. when several products are put into R&D at the same time. d. when a company takes advantage of existing technology. e. none of the above.
Last Answer : d. when a company takes advantage of existing technology.
Description : With increase in the number of carbon and hydrogen atoms in hydrocarbon molecules, the density of petroleum products (A) Decreases (B) Increases (C) Remain same (D) Unpredictable from the data
Last Answer : (B) Increases
Description : A hydrocarbon formed in cholesterol synthesis is (A) Mevalonate (B) HMG CoA (C) Squalene (D) Zymosterol
Last Answer : Answer : C
Description : Which hydrocarbon is formed by the action of sodium on ethyl iodide? (a) Methane (b) Ethane (c) Ethylene (d) Butane
Last Answer : Ans:(d)
Description : Pick out the wrong statement. (A) Addition of methane to the furnace atmosphere reduces decarburising by hydrogen (B) Nitrogen in presence of steam decor-burises high carbon steel, whereas hydrocarbon ... the metal surface) cause nitride formation with increase in surface hardness (D) None of these
Last Answer : (D) None of these
Description : Photochemical smog is formed from automobile exhaust (A) By reaction of hydrocarbon & nitric oxide in presence of sunlight (B) Appears only on sunny days (C) Is harmful for crops and trees also besides causing eye irritation & asthma (D) All (A), (B) & (C)
Last Answer : (D) All (A), (B) & (C)
Description : Which one of the following can be oxidized to the corresponding carbonyl compound - (1) O-Nitrophenol (2) Phenol (3) 2-methyl-2-hydroxy propane (4) 2-hydroxy propane
Last Answer : (4) 2-hydroxy propane
Description : If the sewage is fully oxidized, the nitrogen is in the form of – (1) Nitrites (2) Ammonia (3) Nitramines (4) Nitrates
Last Answer : (4) Nitrates Explanation: Oxidized forms of nitrogen include nitrite (NO2) and nitrate (NO3). Nitrogen mainly occurs in wastewater in this form. Because nitrite is easily oxidized to nitrate, nitrate is the compound predominantly found in groundwater and surface waters.
Description : In the conversion of wine to vinegar (a) Ethanol is oxidized to acetic acid (b) Ethanol is reduced to acetic acid (c) Methanol is oxidized to acetic acid (d) Methanol is reduced to acetic acid
Last Answer : Ethanol is oxidized to acetic acid
Description : Which of the following is not a property of thiols (RSH)? (a) They are all solids (b) They can be oxidized to disulfides (c) They have foul odors (d) They are weak acids
Last Answer : They are all solids
Description : Ethers are kept in brown bottles because (a) Brown bottles are cheaper than colorless clear bottles (b) Ethers absorb moisture (c) Ethers evaporate readily (d) Ethers are oxidized to explosive peroxides
Last Answer : Ethers are oxidized to explosive peroxides
Description : Which of the following compounds will not be easily oxidized? (a) Primary alcohol (b) Secondary alcohol (c) Tertiary alcohol (d) Aldehyde
Last Answer : Tertiary alcohol
Description : An aldehyde can be oxidized to form: w) a ketone x) an acid y) an alcohol z) an ester
Last Answer : ANSWER: X -- AN ACID
Description : Which of the following is NOT oxidized by chlorine? w) F- (read: F minus) x) Br- (read: B - R minus) y) F2 (read: F - 2) z) I- (read: I minus)
Last Answer : ANSWER: A -- F
Description : In the common dry cell, the zinc atoms are: w) reduced at the cathode x) oxidized at the cathode y) oxidized at the anode z) reduced at the anode
Last Answer : ANSWER: Y -- OXIDIZED AT THE ANODE
Description : If the sewage is fully oxidized, the nitrogen is in the form of (1) Nitrites (2) Ammonia (3) Nitramines (4) Nitrates
Last Answer : Nitrates
Description : Which of the following statements is false about cyclohexane? (a) It is a saturated cyclic hydrocarbon (b) All C–C–C bond angles are 109°28' (c) It is very unstable, strained compound. (d) It can exist in two conformations which are designated as the boat-form and the chair-form
Last Answer : It is very unstable, strained compound
Description : What is unsaturated free chain hydrocarbon ?
Last Answer : A free chain of hydrocarbons that has one or more carbon-carbon double bonds or carbon carbon triple bonds is called unsaturated free chain hydrocarbons. Such as ethane.
Description : What is aliphatic hydrocarbon ?
Last Answer : Hydrocarbons without aromatic properties (without circular structure) are called aliphatic hydrocarbons. Such as methane , ethane.
Description : What is Aromatic Hydrocarbon ?
Last Answer : Hydrocarbons with benzene and benzene rings are called aromatic hydrocarbons. Such as: benzene , phenol.
Description : What is saturated hydrocarbon ?
Last Answer : Hydrocarbons that have a carbon-carbon single bond are called saturated hydrocarbons.
Description : What is the name of the simplest hydrocarbon ?
Last Answer : The simplest hydrocarbon is called methane ( CH4) .
Description : What is a free chain saturated hydrocarbon ?
Last Answer : Free chain organic compounds consisting of only carbon or hydrogen, consisting of only carbon-carbon one-bond ( C-C) and / or carbon-hydrogen one bond ( C-H) , are called free-chain saturated hydrocarbons or paraffin.
Description : What is Hydrocarbon ?
Last Answer : Organic compounds that consist only of carbon and hydrogen atoms are called hydrocarbons. Namely: Methane [ CH4], Ethane [ C2H6], Ethylene [ C2H4], Acetylene [ C2H2] etc.
Description : What is unsaturated hydrocarbon ?
Last Answer : Hydrocarbons that have at least one double bond or triple bond between the carbon-carbon atoms are called unsaturated hydrocarbons. For example: CH2 = CH 2, CH = CH ( ethin) (ethin).
Description : ‘Freon' used as refrigerants is chemically known as - (1) chlorinated hydrocarbon (2) fluorinated hydrocarbon (3) chlorofluoro hydrocarbon (4) fluorinated aromatic compound
Last Answer : (3) chlorofluoro hydrocarbon Explanation: In addition to fluorine and carbon, Freons often contain hydrogen, chlorine, or bromine. Thus, Freons are types of chlorofluorocarbons (CFCs), hydrochlorofluorocarbons (HCFCs), and related compounds.
Description : Which of the following is not a gaseous air pollutant? (1) Oxides of nitrogen (2) Hydrocarbon (3) Smoke (4) Oxides of sulphur
Last Answer : (2) Hydrocarbon Explanation: The gaseous air pollutants of primary concern in urban settings include sulfur dioxide, nitrogen dioxide, and carbon monoxide; these are emitted directly into the air ... is also a pollutant. Hydrocarbon is an organic compound consisting entirely of hydrogen and carbon.
Description : Which of the following is not a natural source of hydrocarbon? (1) Natural Gas (2) Coal (3) Petroleum (4) Mica
Last Answer : (4) Mica Explanation: There are three main natural sources of hydrocarbons: natural gas, petroleum and coal. Mica is a natural occurring mineral that is based on a collection of silicate minerals and ... of potassium, iron, aluminum, magnesium and water. It is widely used in the electrical industry.
Description : Which of the following statements is not true? (a) Natural rubber is a hydrocarbon. (b) Natural rubber is made of isoprene units (c) Natural rubber is a polymer of 1,3-Butadiene (d) Natural rubber can be vulcanized.
Last Answer : Natural rubber is a polymer of 1,3-Butadiene
Description : Which of the following statements is not true about fatty acids? (a) Fatty acids are carboxylic acids with long hydrocarbon side chains. (b) The double bonds in unsaturated fatty acids are always ... contain even numbers of carbons and are unbranched. (d) Fatty acids can be saturated or unsaturated
Last Answer : The double bonds in unsaturated fatty acids are always conjugated
Description : A hydrocarbon, C6H12, on ozonolysis gives only one product which does not give silver mirror with Tollens' reagent. The hydrocarbon is (a) 2,3-Dimethyl-2-butene (b) 2-Hexene (c) 2-Methyl-2-pentene (d) 3-Hexene
Last Answer : 2,3-Dimethyl-2-butene
Description : Which hydrocarbon molecule with eight carbons would produce the lowest octane number (i.e., the most knocking) when used as a fuel in automobile? (a) 2-Methyl-3,3-dimethylpentane (b) n-Octane (c) 2-Isopropylpentane (d) 2-Methylheptane
Last Answer : n-Octane
Description : What is the name given to a compound containing only carbons and hydrogens and having the maximum number of hydrogens in the molecule? (a) alkene (b) unsaturated hydrocarbon (c) saturated hydrocarbon (d) alkyne
Last Answer : saturated hydrocarbon
Description : Which of the following is an aromatic hydrocarbon? w) methane x) ethanol y) benzene z) glycine
Last Answer : ANSWER: Y -- BENZENE
Description : Which of the following organic compounds is known as a saturated chain hydrocarbon ? w) an aromatic compound x) an alkene y) an alkyne z) an alkane
Last Answer : ANSWER: Z -- AN ALKANE
Description : The boiling point of normal paraffinic (pron: pair-ah-FIN-ik) hydrocarbons increases with the number of carbon atoms per molecule. What is the smallest number of carbon atoms a normal paraffinic ... and still be a liquid at room temperature (70-75 degrees Fahrenheit) and 1 atmosphere pressure.
Last Answer : ANSWER: FIVE
Description : The hydrocarbon end of a detergent molecule is: w) hydrophilic x) hydrophobic y) possible ionic z) contains oxygen or sulfur
Last Answer : ANSWER: HYDROPHOBIC
Description : Which of the following chemical compounds is an important aromatic hydrocarbon. Is it: w) methane x) ethane y) benzene z) propyne
Description : Which of the following is NOT an aliphatic hydrocarbon? w) n-octane x) propylene y) n-tridecane z) benzene
Last Answer : ANSWER: Z -- BENZENE