Advertisements
Advertisements
प्रश्न
One of the following contains a double bond as well as single bonds. This is:
(a) CO2
(b) O2
(c) C2H4
(d) C2H2
Advertisements
उत्तर
(c) C2H4
An ethene molecule (C2H4) contains one double bond between two carbon atoms and four single bonds between carbon and hydrogen atoms.
APPEARS IN
संबंधित प्रश्न
Butanone is a four-carbon compound with the functional group:
Give one example, state what are covalent compounds?
How buckminsterfullerene is it related to diamond and graphite?
Why is graphite used for making dry cell electrodes but diamond is not?
Give two general properties of ionic compounds and two those of covalent compounds.
State any two uses of diamond.
Buckminsterfullerene is an allotropic form of the element:
(a) phoshorus
(b) fluorine
(c) carbon
(d) sulphur
The molecules having triple bond in them are:
(a) oxygen and ethyne
(b) carbon dioxide and ammonia
(c) methane and ethene
(d) nitrogen and ethyne
The organic compound prepared by Wohler from an inorganic compound called ammonium cyanate was:
(a) glucose
(b) urea
(c) uric acid
(d) vinegar
What happens when methane (natural gas) burns in air? Write the chemical equation of the reaction involved.
Give two example in following case:
Gaseous polar compounds
Distinguish between ionic and covalent compounds under the following properties:
(i) Strength of forces between constituent elements
(ii) Solubility of compounds in water
(iii) Electrical conduction in substances
The following structural formula belongs to which carbon compound?

Explain the following briefly:
Cl2 is a non polar molecule, while HCl is a polar molecule.
Explain the following:
Covalent compounds are generally gases or liquids or soft solids.
Explain the following:
Covalent compounds have low melting and boiling point.
The particles present in strong electrolytes are
Complete the following activity.
Write the names of the hydrocarbons for the following structural formula.
(isobutylene, cyclohexane, propene, cyclohexene, cyclopentane, benzene, propyne, isobutane, propane)
| \[\begin{array}{cc} \phantom{..}\ce{H}\phantom{...}\ce{H}\phantom{...}\ce{H}\\ \phantom{..}|\phantom{....}|\phantom{....}|\\ \ce{H - C - C- C- H}\\ \phantom{.}|\phantom{....}|\phantom{....}|\\ \ce{H - C - H}\\ |\\\ce{H}\end{array}\] |
List two differences between the properties exhibited by covalent compounds and ionic compounds.
Discuss in brief about the properties of coordinate covalent compounds.
