Advertisements
Advertisements
प्रश्न
State any two uses of graphite.
Advertisements
उत्तर
Uses of graphite:
(1) As graphite is a good conductor of electricity, it is used in making carbon electrodes in dry cells.
(2) Graphite is used in making pencil leads and black paints.
APPEARS IN
संबंधित प्रश्न
Write structural formula of Methane.
What would be the electron dot structure of a molecule of sulphur which is made up of eight atoms of sulphur? (Hint – the eight atoms of sulphur are joined together in the form of a ring.)
Butanone is a four-carbon compound with the functional group:
Write the electron-dot structure for the following molecule.
Cl2
Fill in the following blank with suitable word:
The general formula CnH2n for cycloalkanes is the same as that of ...........
What type of bond is present in oxygen molecule?
will CCl4 conduct electricity or not?
give reason for your choice.
Draw the electron-dot structure of CO2 compound and state the type of bonding.
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
A covalent molecule having a double bond between its atoms is:
(a) Hydrogen
(b) Oxygen
(c) water
(d) ammonia
State the type of bonding in the following molecule.
Methane
Give examples for the following:
Two solid covalent compounds.
Explain the following:
Non-polar covalent compounds are insoluble in 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.
Taking MgCl2 as an electrovalent compound, CCl4 as a covalent compound, give four difference between electrovalent and covalent compounds
Name gas with a rotten egg smell.
Write a short note.
Aromatic hydrocarbons
Consider the coordination compound, K2[Cu(CN)4]. A coordinate covalent bond exists between:
Acetic acid was added to a solid X kept in a test tube. A colourless, odourless gas Y was evolved. The gas was passed through lime water, which turned milky. It was concluded that ______.
