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प्रश्न
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?
उत्तर
(a) Covalent bond is present compound X because it is formed by sharing of electrons.
(b) Compound X has a low melting point because it is a covalent compound.
(c) Being a covalent compound, it will not be a good conductor of electricity.
(d) Covalent compounds dissolve in an organic solvent. Since X is a covalent compound, it will dissolve in an organic solvent.
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संबंधित प्रश्न
What are covalent compounds?
Name the hardest natural substance known.
Fill in the blank in the following sentence:
The number of single covalent bonds in C2H2 molecule are ...........
How buckminsterfullerene is it related to diamond and graphite?
Why is diamond used for making cutting tools (like glass cutters) but graphite is not?
Explain why, diamond is hard while graphite is soft (though both are made of carbon atoms).
Explain why, diamond can be used in rock drilling equipment but graphite cannot.
Buckminsterfullerene is an allotropic form of the element:
(a) phoshorus
(b) fluorine
(c) carbon
(d) sulphur
One of the following contains a double bond as well as single bonds. This is:
(a) CO2
(b) O2
(c) C2H4
(d) C2H2
A saturated hydrocarbon has fifty hydrogen atom in its molecule. The number of carbon atoms in its molecule will be
(a) twenty five
(b) twenty four
(c) twenty six
(d) twenty seven
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 pencil leads are made of mainly:
(a) lithium
(b) charcoal
(c) lead
(d) graphite
Draw electron - dot structure and structural formula of methane.
Give examples for the following:
Two liquid non polar compounds.
Draw the electron dot diagram and structure of :
methane
Taking MgCl2 as an electrovalent compound, CCl4 as a covalent compound, give four difference between electrovalent and covalent compounds
Write a short note.
Aromatic hydrocarbons
Assertion (A): Melting point and boiling point of ethanol are lower than that of sodium chloride.
Reason (R): The forces of attraction between the molecules of ionic compounds are very strong.
