How is food preserved ?2 2405
What is given off on burning a candle ?1 3219
What are the names of the three different rays emitted by radioactive substances ?1 2974
What is the effect of the flashes of lightning during a thunderstorm ?2 2764
What is produced, when carbon is burnt ?2 2927
Which substance has the highest specific heat ?9 21671
Is diamond element ?3 3863
Can a molecule be divided ?2 3824
Which is the hardest substances know ?3 3311
From which substance are the dues manufactured ?1 1851
What will happen when a big piece of quick lime is dropped in water ?2 3246
A dynamite catridge struck in a rock makes the rock burst in being fired. How dies it happen ?1 2122
From what was Uranium isolated ?1 2250
What s the difference between hard and soft coal ?1 6775
What is glacial acetic acid?
what is the relation between Total organic carbon and Chemical Oxygen demand?
Why is sulphuric acid added during the preparation of standard fas solution?
What is wave length?
Mention the different types of conductivities.
How is measurement of ph made?
Acid value definition is number milligrams of koh required to nuetralise the acid present in one gram oil & fats but why not use naoh for nuetralisation?
Why is glass electrode called an ion selective electrode?
What is edta?
What is blank solution?
Why is ammonia solution added while preparing edta solution?
What is the reaction that occurs between iodine and sodium thiosulphate?
What is modern definition(iupac) of ph?
Why is acetic acid added?
Why is ammonium hydroxide added to the brass solution?