Hydrocarbons are organic compounds made of hydrogen and carbon atoms. They are the primary components of fossil fuels like oil and natural gas and are essential in energy production, transportation, and the manufacturing of plastics and chemicals.
10th class chemistry chapter 4 Notes
Dehydrohalogenation take place in the presence of: Alcoholic KOH
Condensed formula of ethane is: H3CCH3
Alkanes are produced in large amounts by cracking of: Petroleum
Dehydrohalogenation takes place in the presence of: Alcoholic KOH
Incomplete combustion of alkanes produces: Carbon monoxide and carbon black
Which of one of the following is used as as fumigant: ethylene oxide
Which hydrocarbon decolorizes the pink colour of acidic solution of potassium permanganate: C2H4
Which one of these is a saturated hydrocarbon: C5H12
Substitution reaction is the characteristics of: Alkanes
General formula of alkynes is: CnH2n-2
Which one of these hydrocarbon molecules would have no effect on an aqueous solution of bromine: CH4
Which is present 85% in natural gas: Methane
Oxidation of Ethene with KMnO4 produces: Ethene Glycol
__________ use for ripening of fruits: Ethene
Which hydrocarbon has no effect on an aqueous solution of bromine: CH4
In which one of the following is a substitution reaction: Halogenations of alkanes
How trace amount of acetylene present in the coat gas: C2H6
If an organic compound has 4 carbon atoms, all singly bonded, it will have the following characteristics except one: It will hav 8 hydrogen atoms
How many percent of natural gas is consisted of methane: 85%
Amont the followign substitution reaction is characteristics of: Alkanes
Carbon black is used in the manufacture of: Shoe polishes.
Which compound do not produce in the halogenation of methane: Chloromethane
Ethylene glycol can be prepared with the reaction of KMnO4 and: CH = CH
The order of reactivity of hydrogen halides with alkenes is: HI>HBR
In dry cleaning, which chemical is used: Carbon tetachloride
Chloroform is used for: Anesthesia
Volatility of hydrocarbons deceases with: increase of molecular mass
Which gas creates suffocation and causes death: CO
Hydrogenation of alkenes and alkynes may be carried out at room temperature in the presence of catalyst: Pt or Pd
Oxidation of alkenes forms: Glycol
A hydrocarbon has molecular formula C8H14. What is the molecular formula of the next number of the same homologous series: C9H16
General formula of alkenes: CnH2n
The alkanes consisting of C5 to C10: liquids
Alkanes are least reactive compounds because they are: Saturated hydrocarbons.
Incomplete combustion of alkanes produce: Carbon monoxide carbon black and water
Which one is the formula of chloromethane: CH3Cl
Halogenation of methane on the presence of diffused sunlight takes place: In a series of four steps
Carbon Tetra chloride is used in: Dry cleaning
Ethyne is oxidized by alkaline KMnO4 then ……. hydroxyl group add to the triple bond: Four
Which is simplest alkane: CH4
Halogenation of alkanes in the presence of diffused sunlight takes place: In a series of step
The order of reactivity of hydrogen halides with alkenes is: HI>HBr
Benzene is formed by the polymerization of: Acetylene
In shoe polished, which chemical is used: Carbon black
Ethylene is present is natural gas sometimes to the extent of: 20%
The general formula of alkynes is: Cn H2n-2
The end product of oxidation of acetylene is: Glyoxal
Which hydrocarbon molecule would have no effect on the aqueous solution of bromine: CH4
Boiling point of alcohol in centigrade is: 78
Olefins is a Latin word meaning: oil forming
Marsh gas is mostly consisted of: Methane
Which of following dehydration of alcohols take place: H2SO4
Which is the substitution reaction in the following: Halogenation of alkanes
Halogenation of methane produces following valuable chemical compounds used as solvents except: Carbon Black
Alkynes are also called: Acetylenes
Marsh gas is mostly: methane
Which gas in produced during ripening of bnabanas: Ethene
Which one of these is used as anaesthesia: Chloroform
Ethen is prepared by heating a mixture of ethanol and excess of concentrated sulphuric acid at: 180°C
Molecular formula of butyne is: C4 H6
Which one of the following is polmerized to from benzene: ethyne
One of the hydrocarbons reacts with one mole of hydrogen to form a saturated hydrocarbon. What formula could be of the X: C7H16
By which process alkenes are prepared from alcohols: Dehydro-halogenation
Dehalogenation of tetrahalides produces acetylene. This reaction takes place in the presence of: Zinc metal
The reduction of alkyl halides takes place in the presence of: Zn/HCl
One of the hydrocarbons reacts with one mole of hydrogen to form a saturated hydrocarbon. What is the formula could be of the x: C6H12
Oxidation of ethene with KMnO4produces: ethene glycol
Some orchids attracts bees for pollination by producing: alkanes
Dehalogenation of Tetrahalides takes place in the presence of: Zn dust
Alkanes give reaction only: Substitution
Oxidation of alkenes produce: Glycol
When bromine water is added to acetylene its red-brown colour is changed into: discharged
The reduction of alkyl halides takes place in the presence of: Zn/HCl
The process which convert vegetable oil into banaspati ghee called: Hydrogenation
The end product of oxidation of acetylene is: Oxalic acid
Which are called paraffines: Alkanes
Alkanes do not react in: Dark
Which of the following gas is used in warfare: Mustard gas
Dehydration of alcohols can be carried out with: H2SO4
Dehydrohalogenation of vicinal-dihalides take place in the presence of: KOH
Dehydration means removal of: Water
The order or reactivity of hydrogen halides with alkenes is: HI/Br
Traces of acetylene are present to coal gas about: 0.06%
Dichloromethane reacts with halogens in the presence of diffused sun light and produces: Chloroform
Chemical formula of chloroform is: CHCl3
The molecular formula of the first three members of the alkane hydrocarbons are CH4,C2H6 and C3H8. What is the molecular formula for the eight alkane member, octane, which is found is petrol: C8H20
Chemical formula of chloroform: CHCl2
Hydrogenation of vegetable oil to convert it into banaspatic ghee is carried out in the presence of catalyst: Ni-metal
Important : Review all previous years’ 10 class past papers for comprehensive practice and better exam preparation.