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प्रश्न
Fill in the following blank with suitable word:
The form of carbon which is known as black lead is ...........
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उत्तर
The form of carbon which is known as black lead is graphite.
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संबंधित प्रश्न
What do you call the compounds having the same molecular formula but different structural arrangements of atoms?
What type of bonds are present in CO2 molecule? Draw their electron-dot structures.
Which inert gas electron configuration do the Cl atoms in Cl2 molecule resemble? What is this electron configuration?
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 H2O compound and state the type of bonding.
The solution of one of the following compounds will not conduct electricity. This compounds is:
(a) NaCl
(b) CCl4
(c) MgCl2
(d) CaCl2
What is the difference between ionic compounds and covalent compounds?
For each compound mentioned above give the formulae of ions formed in aqueous solution.
Define a coordinate bond.
Explain the following term with example.
Alkane
Give examples for the following:
Two gaseous non polar compounds.
(a) Compound X consists of molecules.
Choose the letter corresponding to the correct answer from the choices (a), (b), (c) and (d) given below
In the liquid state, X will
Acids dissolve in water to produce positively charged ions. Draw the structure of these positive ions.
Answer the following question.
What is methane? Draw its electron dot structure. Name the type of bonds formed in this compound. Why are such compounds:
(i) poor conductors of electricity? and
(ii) have low melting and boiling points? What happens when this compound burns in oxygen?
Write a short note.
Characteristics of carbon
Write a short note.
Aromatic hydrocarbons
Complete the following activity.
Write the names of the hydrocarbons for the following structural formula.
(isobutylene, cyclohexane, propene, cyclohexene, cyclopentane, benzene, propyne, isobutane, propane)
| \[\begin{array}{cc} \phantom{..}\ce{H}\phantom{...}\ce{H}\phantom{...}\ce{H}\\ \phantom{..}|\phantom{....}|\phantom{....}|\\ \ce{H - C - C- C- H}\\ \phantom{.}|\phantom{....}|\phantom{....}|\\ \ce{H - C - H}\\ |\\\ce{H}\end{array}\] |
The bond which is formed by the mutual sharing of electrons is called ______ bond.
In covalent bond formation, the sharing of ______ electrons takes place in their outermost shell.
