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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.
Write any three features and give two examples of covalent compounds
Fill in the following blank with suitable word:
The form of carbon which is known as black lead is ...........
Fill in the blanks in the following sentence:
In forming oxygen molecule, .............. electrons are shared by each atom of oxygen.
What is a covalent bond?
Explain why, graphite can be used as a lubricant but diamond cannot.
Explain why, diamond has a high melting point.
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
A solid element X has four electrons in the outermost shell of its atom. An allotrope Y of this element is used as a dry lubricant in machinery and also in making pencil leads.
(a) What is element X?
(b) Name the allotrope Y.
(c) State whether allotrope Y is a good conductor or non-conductor of electricity.
(d) Name one use of allotrope Y (other than lubrication and pencil leads)
(e) Name two other allotropes of element X.
Draw an electron dot diagram for the formation of the following. State the type of bonding present in them.
Hydroxyl ion
Draw all possile structural formulae of compound from their molecular formula given below.
C3H4
Explain the following briefly:
Cl2 is a non polar molecule, while HCl is a polar molecule.
(a) Compound X consists of molecules.
Choose the letter corresponding to the correct answer from the choices (a), (b), (c) and (d) given below
The type of bonding in X will be
Which of the following is a common characteristic of a covalent compound?
Explain the following:
Polar covalent compounds conduct electricity?
Give an example of the covalent bond formed by
(i) Similar atoms (ii) Dissimilar atoms
What are Allotropes? Name any two allotropic forms of carbon. Give one use of it.
Complete the following activity.
Write the names of the hydrocarbons for the following structural formula.
(isobutylene, cyclohexane, propene, cyclohexene, cyclopentane, benzene, propyne, isobutane, propane)
| \[\begin{array}{cc} \phantom{.........}\ce{H}\\ \phantom{.........}|\\ \ce{H - C ≡ C - C - H}\\ \phantom{.........}|\\ \phantom{.........}\ce{H} \end{array}\] |
Two carbon atoms can always form one or two covalent bonds.
Non-polar covalent compounds are ______ conductors of heat and electricity.
