Advertisements
Advertisements
Question
Explain why, diamond can be used in rock drilling equipment but graphite cannot.
Advertisements
Solution
As diamond is extremely hard, it can be used to cut and grind other hard materials or metals. Hence, it is used in rock-drilling equipment to drill holes in the rocky layers of the Earth. Graphite being soft cannot be used to cut or grind.
APPEARS IN
RELATED QUESTIONS
Ethane, with the molecular formula C2H6 has ______.
Choose the most appropriate answer from the following list of oxides which fit the description.
A covalent oxide of a metalloid.
Why are most carbon compounds poor conductors of electricity?
Give one example of a molecule containing a triple covalent bond.
What type of chemical bond is present in chlorine molecule? Explain your answer.
Why is diamond used for making cutting tools (like glass cutters) but graphite is not?
Explain why, ionic compounds conduct electricity in solution whereas covalent compounds do not conduct electricity.
will CS2 conduct electricity or not?
give reason for your choice.
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)
Give the formulae of the chlorides of the elements X and Y having atomic numbers of 3 and 6 respectively. Will the properties of the two chlorides be similar or different? Explain your answer.
What are the conditions necessary for the formation of covalent molecules?
Give two example in following case:
Gaseous polar compounds
Explain the following term with example.
Alkane
Explain the following:
Covalent compounds have low melting and boiling point.
Fill in the blank with correct word from the bracket.
Melting and boiling points of covalent compounds are generally ______ (low, high).
State the type of bonding in the following molecule.
Water
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.
What is the difference between a polar covalent compound and a non-polar covalent compound?
Define the functional group and complete the following table.
| S.I. No. | Functional Group | Compound | Formula |
| (1) | ______________ | _______________ |
C2H5OH |
| (2) | _______________ | _______________ | CH3CHO |
Considering MgCl2 as ionic compound and CH4 as covalent compound give any two differences between these two compounds.
