CBSE Questions for Class 10 Chemistry Carbon And Its Compounds Quiz 8 - MCQExams.com

The trends in physical properties of compounds within a homologous series are due to:
  • change in size
  • change in weight
  • functional group
  • both A and B
Number of carbon atoms in the longest chain is 3. A methyl group is present at carbon numberSo, IUPAC name is___________. 
  • 2-ethyl propane
  • butane
  • 2-methyl propane
  • 2-methyl butane
Unburnt carbon particles causes:
  • stomach infections
  • respiratory problems
  • throat problems
  • none of these
At standard conditions, X has an allotropic form that is a good electrical conductor. Identify X?
  • Carbon
  • Nitrogen
  • Oxygen
  • Neon
  • Argon
Methylated spirit is ethanol containing methanol to render it unfit for drinking.
  • True
  • False
Identify the product(s) which will be formed by using the information provided about the reactants:
$${C}_{4}{H}_{10}(g)+{O}_{2}(g) \rightarrow$$
  • $${C}_{4}{H}_{10}{O}_{2}$$
  • $$CO+{H}+{2}{O}_{2}$$
  • $${8CO}_{2}+{10H}_{2}$$
  • $${C}_{2}{H}_{5}O$$
  • $${CO}_{2}+{H}_{2}{O}_{2}$$
Petrol engine gives off gaseous oxides of :
  • silicon
  • phosphorus
  • boron
  • nitrogen
Methane burns in air is ___________.
  • Decomposition
  • Synthesis
  • Combustion
  • Single displacement
  • Double displacement
$$2C_3H_8 + 7O_2 \rightarrow 2CO_2 + 8H_2O + 2CO + 2C$$ 
Name the type of reaction.
  • Combustion
  • Incomplete combustion
  • Condensation
  • None of these
Complete combustion of alkenes requires sufficient:
  • oxygen
  • hydrogen
  • nitrogen
  • sulphur
Carbon monoxide is produced by :
  • incomplete combustion of fuels
  • complete combustion of fuels
  • neutralization of fuels
  • none of these
 $$C_3H_8 + 5O_2\rightarrow  3CO_2 + H_2O$$
Name the type of reaction.
  • Double displacement reaction
  • Combustion reaction
  • Hydrogenation reaction
  • Displacement reaction
LPG is liquefied petroleum gas which is a compound of butane and propane and used as :
  • cooking fuel
  • motor fuel
  • refrigeration
  • All of these
Alkanes are used as fuel:
  • because there is evolution of large amount of heat during combustion.
  • because there is evolution of large amount of heat during conduction.
  • because there is evolution of large amount of heat during neutralization.
  • because there is absorption of large amount of heat during combustion.
A chemical process in which a substance reacts with oxygen to give off heat is______
  • respiration
  • combustion
  • explosion
  • conduction
Use of petrol and diesel as fuel in automobiles is starting to be replaced by:
  • LPG
  • CNG
  • Bitumen
  • Coal
Benzene when heated in air burns with ________ and produces $$CO_2$$ and $$H_2O$$.
  • sooty flame
  • non-sooty flame
  • light color flame
  • none of these
LPG burns more cleanly than higher molecular weight hydrocarbon :
  • because it releases volatile pollutants
  • because it releases less pollutants
  • because it releases pollutants which are toxic
  • because it releases more pollutants

Homologous series is____________.
  • a series of compounds in which the same functional group substitutes for hydrogen in a carbon chain.
  • a series of compounds in which different functional group substitutes for hydrogen in a carbon chain.
  • a series of compounds with same molecular formula and different structural formulae.
  • a series of compounds with same molecular formula but different functional groups.
The chief source(s) of oils used to make soap is/are:
  • petroleum products
  • coal and coke
  • plants and animals
  • none of the above
A five carbon chain with a double bond would be named :
  • pentane
  • pentyne
  • pentone
  • pentene
Which of the given statements is true?
  • The ionic end of soap dissolves in water while the carbon chain dissolves in oil.
  • The ionic end of soap dissolves in oil while the carbon chain dissolves in water.
  • The ionic end of soap and the carbon chain both dissolve in water.
  • The ionic end of soap and the carbon chain both dissolve in oil.
Compound with a molecular formula $$C_7H_{16}$$ will have:
  • single covalent bonds only.
  • at least one double bond.
  • at least one triple bond.
  • none of these
Carbon compounds with one multiple bond are called :
  • alkenes
  • alkynes
  • alkanes
  • both alkenes and alkynes
LPG releases ______ of the $$CO_2$$ per kWh produced by oil.
  • 89%
  • 81%
  • 79%
  • 0%
Acetic acid is:
  • methanoic acid
  • ethanoic acid
  • propanoic acid
  • none of these
Which of the following statements are correct?
  • Unsaturated hydrocarbons add hydrogen to give saturated hydrocarbons.
  • Catalysts are used for addition reactions of unsaturated hydrocarbons.
  • Hydrogenation of vegetable oils is an example of addition reaction.
  • All of the above
Iso-octane reacts with oxygen:
  • Endothermically
  • Exothermically
  • Only some activation energy is required
  • Doesn't react
Which of the following do not give an addition reaction?
  • Alkanes
  • Alkenes
  • Alkynes
  • Carbonyl compounds
Hydrogenation of alkyne may give :
  • alkane
  • alkene
  • both alkane and alkene
  • polymer
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