Description : How many distinct terminal alkynes exist with a molecular formula of C5H8? (a) 1 (b) 2 (c) 3 (d) 4
Last Answer : 2
Description : Cycloalkanes have the same molecular formula as : (a) Alkanes (b) Alkenes (c) Alkynes (d) Cycloalkenes
Last Answer : Alkenes
Description : Which of the following molecular formulas will correspond to an alkene with two double bonds? (a) C4H10 (b) C5H12 (c) C6H10 (d) C8H16
Last Answer : C6H10
Description : The general formula of alkynes is
Last Answer : C n H 2n-2
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.
Description : Which of the following statements about alkenes and alkynes is correct? (a) Alkynes are reduced more readily than alkenes. (b) Alkynes are reduced less readily than alkenes. (c) Alkynes and alkenes are reduced with equal speed. (d) Alkynes and alkenes can not be reduced.
Last Answer : Alkynes are reduced more readily than alkenes.
Description : In the addition of hydrogen bromide to alkynes, which of the following species is believed to be an intermediate? (a) vinyl anion (b) vinyl cation (c) vinyl radical (d) carbene
Last Answer : vinyl cation
Description : Which of the following statements correctly describes the general reactivity of alkynes? (a) An alkyne is an electron-rich molecule and therefore reacts as a nucleophile. (b) The σ bonds ... fail to undergo electrophilic addition reactions. (d) Alkynes are generally more reactive than alkenes.
Last Answer : Alkynes are generally more reactive than alkenes.
Description : Which of the following classes of compounds is unreactive toward sulfuric acid? (a) Alkanes (b) Alcohols (c) Alkenes (d) Alkynes
Last Answer : Alkanes
Description : A family of organic compounds containing only carb and hydrogen and having only single bonds are the: w) alkenes and alkanes x) alkanes and cycloalkanes y) alkynes (pron: AL-kines) and alkenes z) cycloalkanes and alkenes
Last Answer : ANSWER: B -- ALKANES AND CYCLOALKANES
Description : Hydrocarbons that contain a triple bond between carbon atoms are known as: w) alkenes x) alkanes y) alkynes z) polymers
Last Answer : ANSWER: Y -- ALKYNES
Description : Which of the following are saturated aliphatic hydrocarbons? w) alkanes x) alkenes y) alkynes z) nixanes
Last Answer : ANSWER: W -- ALKANES
Description : Which of the following contain sp2 hybridized carbon atoms? w) alkanes x) alkenes y) alkynes z) cycloalkanes
Last Answer : ANSWER: X -- ALKENES
Description : Hormone receptors that stimulate cAMP production (A) are part of a complex of two proteins that transform the external signal into internal cAMP production (B) are proteins distinct and separate from those ... binding of the hormone (D) are not very specific and bind a number of different hormones
Last Answer : Answer : B
Description : Do alkynes conduct electricity?
Last Answer : Feel Free to Answer
Description : Give reason: Alkanes undergo only substitution reactions but alkenes and alkynes undergo both substitution and addition reactions.
Last Answer : Alkenes and alkynes have double and triple bonds, which on breaking can add hydrogen atoms to satisfy the valency.
Description : Compare the characteristics of alkanes, alkenes and alkynes.
Last Answer : Alkanes Alkynes They are saturated They are unsaturated They are unsaturated Their general formula is C n H 2n+2 Their general formula is C n H 2n Their general formula is C n H 2n-2 They have ... ene' They have triple bond between one of the carbon atoms. Their names end with yne'
Description : What are alkynes?
Last Answer : Alkynes are unsaturated hydrocarbons that contain one triple bond between carbon atoms. The name of these hydrocarbons end with ‘yne’. Their general formula is C n H 2n-2
Description : What is the difference in the molecular formula of any two consecutive members of a homologous series of organic compounds? -Chemistry
Last Answer : —CH2— is the difference in the molecular formula of any two consecutive members of a homologous series of organic compounds.
Description : Compounds with identical molecular formula but different structures are called - (1) Tetravalent compounds (2) Structural isomers (3) Covalent compounds (4) None of the above
Last Answer : (2) Structural isomers Explanation: Structures with identical molecular formula but different structures are called structural isomers. Eg: Butane.
Description : Write the molecular formula for the oxide and sulphide of following elements. (a) Sodium (b) Calcium (c) Hydrogen
Last Answer : (a) Sodium oxide Na2O Sodium sulphide Na2S (b) Calcium oxide CaO Calcium sulphide CaS (c) Hydrogen oxide H2O Hydrogen sulphide H2S
Description : Define: (a) Radical (b) Valency (c) Molecular formula
Last Answer : (a) Radical: A radical is an atom of an element or a group of atoms of different elements that behaves as a single unit with a positive or negative charge on it. (b) Valency: It is the ... number of atoms of each element present in it. These atoms combine in whole number to form the molecule.
Description : Write the molecular formula for each of the following compounds:
Last Answer : 1. Sulphur trioxide 2. Iron (II) sulphide and 3. Ammonia
Description : An organic compound (A) has a molecular weight 78 and an empirical formula CH. (A) is resistant to attack by oxidizing agents but undergoes substitution and addition reactions. X-ray analysis shows that the ... suggests that compound (A) is (a) Benzene (b) Cyclohexane (c) Toluene (d) n-Hexane
Last Answer : Benzene
Description : Which of the following compounds does not have the molecular formula C6H14O? (a) 2-hexanol (b) 3-methyl-2-pentanol (c) 3-methyl-3-pentanol (d) cyclohexano
Last Answer : cyclohexano
Description : The number of structural isomers of alcohols with molecular formula C4H9OH is (a) 5 (b) 4 (c) 3 (d) 6
Last Answer : 4
Description : The number of structural isomers of alcohols with molecular formula C3H7OH is (a) 5 (b) 4 (c) 3 (d) 2
Description : There are 8 isomers that have the molecular formula C5H11Br. How many of these are tertiary alkyl bromides? (a) 1 (b) 2 (c) 3 (d) 8
Last Answer : 1
Description : The eclipsed and staggered forms of ethane are said to differ in __________. (a) molecular formula (b) configuration (c) conformation (d) constitution
Last Answer : conformation
Description : Which molecular formula indicates 2,2,4-trimethylhexane? (a) C9H20 (b) C9H18 (c) C8H18 (d) C8H16
Last Answer : C9H20
Description : Which molecular formula indicates 2-methylpentane? (a) C5H12 (b) C6H14 (c) C5H10 (d) C6H12
Last Answer : C6H14
Description : How many isomers are possible for the compound with molecular formula C4H8? (a) 2 (b) 4 (c) 6 (d) 8
Last Answer : 6
Description : Compounds with the same molecular formula but different structural formulas are called (a) Alkoxides (b) Iso compounds (c) Isomers (d) Ortho compounds
Last Answer : Isomers
Description : The isomers of a substance must have (a) same chemical properties (b) same molecular weight (c) same structural formula (d) same functional groups
Last Answer : same molecular weight
Description : If two compounds have the same empirical formula but different molecular formula, they must have [MP PMT 1986] (A) Different percentage composition (B) Different molecular weights (C) Same viscosity (D) Same vapour density
Last Answer : (B) Different molecular weights
Description : Acetylene is commonly used in a gas welding torch. Give the molecular formula for acetylene.
Last Answer : ANSWER: C2H2 or HC2H or H2C2
Description : Compounds of the same atomic content and molecular formula but with differing structures are called what?
Last Answer : ANSWER: ISOMERS
Description : Absolute zero, pressure will occur, when the molecular momentum of the system becomes zero. A liquid will cease to exist as liquid at (A) High vacuum (B) Zero pressure (C) 0°K (D) Earth's centre
Last Answer : (B) Zero pressure
Description : Write the molecular formula of first two members of homologous series having functional group – OH. -Science
Last Answer : The general formula for the homologous series of functional group −OH is CnH2n+1OH. The two consecutive members of this series are: a. CH3OH(Methanol) b. CH3CH2OH (Ethanol) where n is 1 and 2 respectivelyThe molecular formula for both of them are CH4O and C2H6O.
Description : What is formula unit of mass? How is it different from molecular mass? -Chemistry 9th
Last Answer : The formula unit mass in chemistry is the empherical formula of any ionic or covalent network solid compound used as an independent entity for stoichiometry calculations. It is the lowest whole number ratio ... atoms in its emperical formula while molar mass is the mass of 1 gram mole of substance.
Description : A hydrocarbon contain `80%` C . The vapour density of compound in 30 . Molecular formula of compound is :-
Last Answer : A hydrocarbon contain `80%` C . The vapour density of compound in 30 . Molecular formula of compound is :- A. ` ... ` C. `C_(4)H_(12)` D. All of these
Description : 44 g of a sample of organic compound on complet combustion gives 88 g `CO_(2)` and 36 g of `H_(2)O` . The molecular formula of the compound may be :-
Last Answer : 44 g of a sample of organic compound on complet combustion gives 88 g `CO_(2)` and 36 g of `H_(2)O` . The ... . `C_(2)H_(4)O` D. `C_(3)H_(6)O`
Description : How many alkanes (only structural isomers) are possible with the molecular formula `C_(4)H_(8)`
Last Answer : How many alkanes (only structural isomers) are possible with the molecular formula `C_(4)H_(8)` A. 4 B. 3 C. 5 D. 6
Description : How many structural isomeric alkenes are possible with molecular formula `C_(5)H_(10)` that does not show geometrical isomerism
Last Answer : How many structural isomeric alkenes are possible with molecular formula `C_(5)H_(10)` that does not show geometrical isomerism A. 2 B. 4 C. 5 D. 3
Description : How many benzenoid isomers are possible for molecular formula `C_(7)H_(8)O` :-
Last Answer : How many benzenoid isomers are possible for molecular formula `C_(7)H_(8)O` :- A. 3 B. 4 C. 5 D. 6
Description : How many amines are possible with the molecular formula `C_(4)H_(11)N` (structural isomers only) :-
Last Answer : How many amines are possible with the molecular formula `C_(4)H_(11)N` (structural isomers only) :- A. 6 B. 7 C. 8 D. 9
Description : The empirical formula of an acid is `CH_(2)O_(2)`, the probable molecular formula of acid may be :-
Last Answer : The empirical formula of an acid is `CH_(2)O_(2)`, the probable molecular formula of acid may be :- A. `CH_(2)O` ... )H_(4)O_(2)` D. `C_(3)H_(6)O_(4)`
Description : Compound A is chiral and has the molecular formula `C_(8)H_(11)N`. When A reacts nitrous acid then occurs a brisk evolution of `N_(2)` gas. A dissolve
Last Answer : Compound A is chiral and has the molecular formula `C_(8)H_(11)N`. When A reacts ... . 1-phenylethanamine C. 1-cyclohexylethanamine D. N-ethylaniline
Description : Compounds P and R upon ozonolysis produce Q and S, respectively. The molecular formula of Q and S is `C_(8)H_(8)O`. Q undergoes cannizzaro reactions b
Last Answer : Compounds P and R upon ozonolysis produce Q and S, respectively. The molecular formula of Q and S is `C_(8) ... R , respectively is (are) A. B. C. D.