Advertisements
Advertisements
प्रश्न
Explain why, graphite can be used as a lubricant but diamond cannot.
Advertisements
उत्तर
Because of its softness and non-volatile nature, graphite is used as a lubricant in the fast moving parts of a machinery. It is used for lubricating the parts of machinery which operate at high temperatures. Diamond, on the other hand, is an extremely hard substance; therefore, it cannot be used as a lubricant.
APPEARS IN
संबंधित प्रश्न
Explain the nature of the covalent bond using the bond formation in CH3Cl.
What type of bonds are present in H2 molecule? Draw their electron-dot structures.
Fill in the following blank with suitable word:
The general formula CnH2n for cycloalkanes is the same as that of ...........
Give the formula of the compound that would be formed by the combination of the following pair of elements:
K and H
Which of the following cannot exhibit isomerism?
(a) C4H10
(b) C5H12
(c) C3H8
(d) C6H14
The pencil leads are made of mainly:
(a) lithium
(b) charcoal
(c) lead
(d) graphite
Draw an electron dot structure of the following molecule. (Without showing the circle) :
Ethene
Explain the Structural isomerism term with example.
Molecular formula of Propane is C3H8 , write the structural formula of propane.
Give examples for the following:
Two gaseous polar compounds.
Choose the correct answer from the options given below
Condition favorable for formation of a covalent bond is
(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
Elements Q and S react together to form an ionic compound. Under normal conditions, which physical state will the compound QS exist in?
State the type of bond formed when the combining atom has zero E.N. difference.
Name a greenish-yellow gas which also bleaches.
Generally, the melting and boiling point of carbon compounds are found to be less than _______ °C.
From the following hydrocarbon _______ is the cyclic hydrocarbon.
Explain covalent bond with example.
Which of the following compound(s) possesses a high melting point?
