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प्रश्न
Which of the following has a triple bond as well as single bonds?
(a) ethene
(b) methane
(c) ethyne
(d) nitrogen
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उत्तर
(c) ethyne
An ethyne molecule 
contains a triple bond between two carbon atoms and two single bonds between carbon and hydrogen atoms.
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संबंधित प्रश्न
Name the type of bonds formed in ionic compounds and in the compounds formed by carbon.
What type of bonds are present in water molecule? Draw the electron-dot structure of water (H2O).
What type of bonds are present in methane (CH4) and sodium chloride (NaCl)?
Which inert gas electron configuration do the Cl atoms in Cl2 molecule resemble? What is this electron configuration?
What is a covalent bond?
Draw the electron-dot structure of CO2 compound and state the type of bonding.
Two non-metals combine with each other by the sharing of electrons to form a compound X.
(a) What type of chemical bond is present in X?
(b) State whether X will have a high melting point or low melting point.
(c) Will it be a good conductor of electricity or not?
(d) Will it dissolve in an organic solvent or not?
A hydrocarbon having one double bond has 100 carbon atoms in its molecule. The number of hydrogen atoms in its molecule will be
(a) 200
(b) 198
(c) 202
(d) 196
Explain the following term with example.
Unsaturated hydrocarbon
Give examples for the following:
Two solid covalent compounds.
Draw the electron dot diagram and structure of nitrogen molecule.
What do you understand by dipole (polar) molecule?
Taking MgCl2 as an electrovalent compound, CCl4 as a covalent compound, give four difference between electrovalent and covalent compounds
Name gas with a rotten egg smell.
Complete the following activity.
Write the names of the hydrocarbons for the following structural formula.
(isobutylene, cyclohexane, propene, cyclohexene, cyclopentane, benzene, propyne, isobutane, propane)
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Acetic acid was added to a solid X kept in a test tube. A colourless, odourless gas Y was evolved. The gas was passed through lime water, which turned milky. It was concluded that ______.
Two carbon atoms can always form one or two covalent bonds.
An element A is soft and can be cut with a knife. This is very reactive to air and cannot be kept open in air. It reacts vigorously with water. Identify the element from the following
Write notes on the characteristics of covalent compounds.
