Academic Category

Todays' Thought
Do the hard jobs first. The easy jobs will take care of themselves.
- Dale Carnegie
पहले कठिन काम पूरे कीजिये. आसान काम खुद-बखुद पूरे हो जायेंगे |
- डेल कार्नेगी

    Chemistry Question & Answer in English

Temporary hardness of water is due to the presence of -
A.  Magnesium Bicarbonate
B.  Magnesium Sulphate
C.  Calcium chloride
D.  Calcium carbonate

Hydrogen does not combine with -
A.  Antimony
B.  Bismuth
C.  Sodium
D.  Helium

Pure  water can be obtained from sea water by -
A.  Centric fugation
B.  Reverse osmosis
C.  Plasmolysis
D.  Sedimentation

Nuclear energy is based on the conversion of -
A.  Protons into Neutrons
B.  Neutrons into Protons
C.  Mass into Energy
D.  Uranium into Radium

An electrically charged atom or a group of atoms is known as -
A.  Meson
B.  Ion
C.  Proton
D.  Cyclotron