Advertisements
Advertisements
Question
State any two uses of diamond.
Solution
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.
APPEARS IN
RELATED QUESTIONS
Name the following:
The property of element by virtue of which atoms of the element can link to each other in the form of a long chain or ring structure.
Fill in the blank in the following sentence:
Two chlorine atoms combine to form a molecule. The bond between them is known as ..........
How buckminsterfullerene is it related to diamond and graphite?
Using electron-dot diagrams which show only the outermost shell electrons, show how a molecule of nitrogen, N2, is formed from two nitrogen atoms. What name is given to this type of bonding? (Atomic number of nitrogen is 7)
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
Explain the following term with example.
Alkane
Write answer as directed.
What causes the existance of very large number of carbon compound ?
An element L consists of molecules.
What type of bonding is present in the particles that make up L?
An element L consists of molecules.
Why L is heated with iron metal, it forms a compound FeL. What chemical term would you use to describe the change undergone by L?
Draw the electron dot diagram and structure of magnesium chloride.
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?
Complete the following activity.
Write the names of the hydrocarbons for the following structural formula.
(isobutylene, cyclohexane, propene, cyclohexene, cyclopentane, benzene, propyne, isobutane, propane)
| \[\begin{array}{cc}\phantom{......}\ce{H}\phantom{...}\ce{H}\phantom{...}\ce{H}\phantom{..}\\ \phantom{.....}|\phantom{....}|\phantom{....}|\\ \ce{H - C - C = C}\\\phantom{.....}|\phantom{.........}|\\ \phantom{.....}\ce{H}\phantom{........}\ce{H}\end{array}\] |
Considering MgCl2 as ionic compound and CH4 as covalent compound give any two differences between these two compounds.
Which of the following compounds of carbon does not consist of ions?
A molecule of ammonia (NH3) has
The correct structural formula of butanoic acid is
Mineral acids are stronger acids than carboxylic acids because
- mineral acids are completely ionised
- carboxylic acids are completely ionised
- mineral acids are partially ionised
- carboxylic acids are partially ionised
Statement (A): Covalent compounds are bad conductors of electricity.
Reason (B): Covalent compounds contain charged particles (ions)
Non-polar covalent compounds are ______ conductors of heat and electricity.
