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The cylindrical shape of an alkyne is due to
(d) In alkynes is present, in such bond one sigma and two -bonds are present. Sigma bond is formed by sp-hybrid orbitals whereas -bonds are formed by unhybridised orbitals.
Hence, it shows cylindrical shape.
Octane no. of a fuel can be increased by:
(d) These all are used to increase octane number of fuel.
An octane rating, or octane number, is a standard measure of the performance of an engine or aviation fuel. The higher the octane number, the more compression the fuel can withstand before detonating (igniting). In broad terms, fuels with a higher octane rating are used in high-performance gasoline engines that require higher compression ratios. In contrast, fuels with lower octane numbers (but higher cetane numbers) are ideal for diesel engines, because diesel engines (also referred to as compression-ignition engines) do not compress the fuel, but rather compress only air and then inject fuel into the air which was heated by compression. Gasoline engines rely on ignition of air and fuel compressed together as a mixture, which is ignited at the end of the compression stroke using spark plugs. Therefore, high compressibility of the fuel matters mainly for gasoline engines. Use of gasoline with lower octane numbers may lead to the problem of engine knocking.
The shortest bond distance is found in
(d) Acetylene have shortest bond length because it have triple bond. The bond length follows the following order
> >
The distance between two adjacent cabron atoms is largest in
(c) The bond length is maximum for single bond, so butane have largest bond length because it contains carbon-carbon single bond.
Products of the following reaction
... are
Which of the following compounds with molecular formula, yields acetone on ozonolysis?
(a) 2-methyl-2-butene (molecular formula ) yields acetone on ozonolysis.
Ozonolysis (, ) of, gives :
The aldehydes formed are oxidized by formed during hydrolysis.
When 3,3-dimethyl-2-butanol is heated with conc., the major product obtained is
Silver acetylide when heated with HCl gives:
(a) AgAg
Alkene-1 on hydroboration followed with action of gives:
(b)
+
This process always gives alkanol-1 from alkane-1.
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