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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
What are covalent compounds?
Name the type of bonds formed in ionic compounds and in the compounds formed by carbon.
Buckminsterfullerene is spherical molecule in which 60 carbon atoms are arranged in interlocking hexagonal and pentagonal rings of carbon atoms.
How many hexagons of carbon atoms are present in one molecule of buckminsterfullerene?
Compare the properties of ionic compounds and covalent compounds.
will CCl4 conduct electricity or not?
give reason for your choice.
Give the formula of the compound that would be formed by the combination of the following pair of elements:
K and H
A covalent molecule having a double bond between its atoms is:
(a) Hydrogen
(b) Oxygen
(c) water
(d) ammonia
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
The electronic configurations of three elements X, Y and Z are as follows:
| X | 2, 4 |
| Y | 2, 7 |
| Z | 2, 1 |
(a) Which two elements will combine to form an ionic compound?
(b) Which two elements will react to form a covalent compound?
Give reasons for your choice.
State the type of bonding in the following molecule.
Hydroxyl ion
Draw all possile structural formulae of compound from their molecular formula given below.
C4H10
Explain the following briefly:
Cl2 is a non polar molecule, while HCl is a polar molecule.
Explain the following:
Covalent compounds have low melting and boiling point.
Electrons are getting added to an element Y:
Is Y getting oxidised or reduced?
Name two compounds that are covalent when taken pure but produce ions when dissolved in water.
Write a short note.
Characteristics of carbon
Give an example for each of the following statement
A compound in which two Covalent bonds are formed.
Which of the following is the formula of Butanoic acid?
It is observed that covalent compounds are had conductors of electricity. Give reason.
