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प्रश्न
State any two uses of diamond.
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उत्तर
Uses of diamonds:
(1) As diamonds have an extraordinary shine, they are used in making jewellery.
(2) Diamonds, due to their hardness, are used in instruments like glass cutters, grinders. They are also used as abrasives for polishing.
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संबंधित प्रश्न
Buckminsterfullerene is spherical molecule in which 60 carbon atoms are arranged in interlocking hexagonal and pentagonal rings of carbon atoms.
How many pentagons of carbon atoms are present in one molecule of buckminsterfullerene?
Which inert gas does the Cl atom in HCl resemble in electron arrangement?
What is diamond? Of what substance is diamond made?
Describe the structure of diamond. Draw a simple diagram to show the arrangement of carbon atoms in diamond.
Why is graphite a good conductor of electricity but diamond is a non-conductor of electricity?
Out of KCl, HCl, CCl4 and NaCl, the compounds which are not ionic are:
(a) KCl and HCl
(b) HCl and CCl4
(c) CCl4 and NaCl
(d) KCl and CCl4
State the type of bonding in the following molecule.
Methane
Draw an electron dot structure of the following molecule. (Without showing the circle) :
Methane
Draw all possile structural formulae of compound from their molecular formula given below.
C3H4
The covalent bond in which the electrons are shared equally between the combining atoms.
The electronic configuration of N2 is 2, 5. How many electrons in the outer shell of a N atom are not involved in the formation of a nitrogen molecule?
The following table shows the electronic configuration of the elements W, X, Y, Z:
|
Element |
W |
X |
Y |
Z |
|
Electronic |
2,8,1 |
2,8,7 |
2,5 |
1 |
Answer the following questions based on the table above:
What type of bond is formed between Y and Z.
Draw the electron dot diagram and structure of magnesium chloride.
Write the molecular formula of the given compound.
Propylene
Write an Explanation.
Alkyne
Complete the following activity.
Write the names of the hydrocarbons for the following structural formula.
(isobutylene, cyclohexane, propene, cyclohexene, cyclopentane, benzene, propyne, isobutane, propane)
| \[\begin{array}{cc} \phantom{.........}\ce{H}\\ \phantom{.........}|\\ \ce{H - C ≡ C - C - H}\\ \phantom{.........}|\\ \phantom{.........}\ce{H} \end{array}\] |
The number of pi-bonds present in benzoic acid molecule are ______.
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.
It is observed that covalent compounds are had conductors of electricity. Give reason.
Non-polar covalent compounds are ______ conductors of heat and electricity.
