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प्रश्न
What happens when methane (natural gas) burns in air? Write the chemical equation of the reaction involved.
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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
State the reason why carbon can neither form C4+ cations nor C4− anions but forms covalent compounds.
Explain the nature of the covalent bond using the bond formation in CH3Cl.
Name the following:
The property of element by virtue of which atoms of the element can link to each other in the form of a long chain or ring structure.
State whether the following statement is true or false:
Diamond and graphite are the covalent compounds of carbon element (C).
Name the black substance of pencil. Will the current flow through the electrical circuit when we use the sharpened ends of the pencil to complete the circuit?
What type of bond is present in hydrogen chloride?
The number of single covalent bonds in C2H2 molecule are ______.
What type of chemical bonds are formed by carbon? Why?
Why is graphite used for making dry cell electrodes but diamond is not?
State one test by which sodium chloride can be distinguished from sugar.
Give the formula of the compound that would be formed by the combination of the following pair of elements:
Al and Cl2
Draw the electron-dot structure of a hydrogen chloride molecule:
- Which inert gas does the H atom in HCl resemble in electron arrangement?
- Which inert gas does the Cl atom in HCl resemble in electron arrangement?
Using electron-dot diagrams which show only the outermost shell electrons, show how a molecule of oxygen, O2, is formed from two oxygen atoms. What name is given to this type of bonding?
(At. No. of oxygen = 8)
Explain why, graphite can be used as a lubricant but diamond cannot.
State any two uses of diamond.
Which of the following has a triple bond as well as single bonds?
Two non-metals combine with each other by the sharing of electrons to form a compound X.
- What type of chemical bond is present in X?
- State whether X will have a high melting point or low melting point.
- Will it be a good conductor of electricity or not?
- Will it dissolve in an organic solvent or not?
What is the difference between ionic compounds and polar covalent compounds?
Give the characteristic properties of covalent compounds.
Complete the following:
When the nuclei of two different reacting atoms are of ______ mass, then a bond so formed is called ______ covalent bond. (equal, unequal, polar, non-polar)
Give two example in following case:
Solid covalent compounds
Explain the Structural isomerism term with example.
Explain the following briefly.
Pure water does not conduct electricity, but on adding sodium chloride to it, it starts conducting electricity.
Give examples for the following:
Two solid covalent compounds.
Acids dissolve in water to produce positively charged ions. Draw the structure of these positive ions.
The molecule which contains a triple covalent bond is ______.
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.
Element A has 2 electrons in its M shell. Element B has atomic number 7.
If the compound formed between A and B is melted and an electric current is passed through the molten compound, the element A will be obtained at the ______ and B at the ______ of the electrolytic cell.
Potassium (Atomic No. 19) and chlorine (Atomic No. 17) react to form a compound. On the basis of electronic concept, explain
(i) oxidation
(ii) reduction
(iii)oxidising agent
(iv)reducing agent
In the formation of electrovalent compounds, electrons are transferred from one element to another. How are electrons involved in the formation of a covalent compound?
Name the anion present in the following compound:
When a barium chloride solution is added to a solution of compound B, a white precipitate insoluble in dilute hydrochloric acid is formed.
Name the types of Hydrocarbons.
Write an Explanation.
Alkene
Considering MgCl2 as ionic compound and CH4 as covalent compound give any two differences between these two compounds.
Give an example for each of the following statement.
A compound in which three covalent bonds are formed.
When ethyl alcohol and acetic acid are mixed, the resulting ester has a chemical formula ______.
Two carbon atoms can always form one or two covalent bonds.
Explain dipole (polar) molecule by taking hydrogen chloride as an example.
