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प्रश्न
What happens when methane (natural gas) burns in air? Write the chemical equation of the reaction involved.
उत्तर
When methane (natural gas) burns in air, carbon dioxide and water vapour are formed along with the release of a large amount of heat. This process is known as combustion.
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संबंधित प्रश्न
Name the type of bonds formed in ionic compounds and in the compounds formed by carbon.
What would be the electron-dot structure of carbon dioxide which has the formula CO2?
What do you call the compounds having the same molecular formula but different structural arrangements of atoms?
Which of the following has a triple bond as well as single bonds?
(a) ethene
(b) methane
(c) ethyne
(d) nitrogen
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?
The electronic configurations of two elements A and B are given below:
| A | 2, 6 |
| B | 2, 8, 1 |
(a) What type of chemical bond is formed between the two atoms of A?
(b) What type of chemical bond will be formed between the atoms of A and B?
Give two example in following case:
Gaseous non polar compounds
Draw an electron dot structure of the following molecule. (Without showing the circle) :
Methanol
Explain the following briefly:
Sodium chloride dissolves in water but carbon tetra chloride is insoluble in water.
What do you understand by lone pair and shared pair?
Explain the structure of Ammonium ion.
Compare the compounds carbon tetrachloride and sodium chloride with regard to solubility in water and electrical conductivity.
The molecule which contains a triple covalent bond is ______.
Draw the electron dot diagram and structure of magnesium chloride.
Element A has 2 electrons in its M shell. Element B has atomic number 7.
If B is a diatomic gas, write the equation for the direct combination of A and B to form a compound.
Name two compounds that are covalent when taken pure but produce ions when dissolved in water.
Name two compounds that are covalent when taken pure but produce ions when dissolved in water.
Write an Explanation.
Alkene
Which of the following are correct structural isomers of butane?
- \[\begin{array}{cc}
\ce{H}\phantom{...}\ce{H}\phantom{...}\ce{H}\phantom{...}\ce{H}\\
|\phantom{....}|\phantom{....}|\phantom{....}|\\
\ce{H - C - C - C - C - H}\\
|\phantom{....}|\phantom{....}|\phantom{....}|\\
\ce{H}\phantom{...}\ce{H}\phantom{...}\ce{H}\phantom{...}\ce{H}\\
\end{array}\] - \[\begin{array}{cc}
\ce{H}\phantom{...}\ce{H}\phantom{...}\ce{H}\\
|\phantom{....}|\phantom{....}|\\
\ce{H - C - C - C - H}\\
|\phantom{.....}|\phantom{.....}|\\
\ce{H}\ce{H-C-H}\ce{H}\\
|\\
\ce{H}\\
\end{array}\] - \[\begin{array}{cc}
\ce{H}\phantom{...}\ce{H}\phantom{...}\ce{H}\\
|\phantom{....}|\phantom{....}|\\
\ce{H - C - C - C - H}\\
|\phantom{.....}\backslash\phantom{..}|\\
\phantom{....}\ce{H}\phantom{......}\ce{C - H}\phantom{}\\
\phantom{.......}|\\
\phantom{.......}\ce{H}\\
\end{array}\] - \[\begin{array}{cc}
\ce{H}\phantom{...}\ce{H}\\
|\phantom{....}|\\
\ce{H - C - C - H}\\
|\phantom{....}|\\
\ce{H - C - C - H}\\
|\phantom{....}|\\
\ce{H}\phantom{...}\ce{H}\\
\end{array}\]
The table shows the electronic structures of four elements.
| Element | Electronic Structure |
| P | 2, 6 |
| Q | 2, 8, 1 |
| R | 2, 8, 7 |
| S | 2, 8, 8 |
- Identify which element(s) will form covalent bonds with carbon.
- “Carbon reacts with an element in the above table to form several compounds.” Give suitable reason.
