* What is used to avoid melting of Ice ..

* The acid Generally used in batteries…………

* The most abudent element in the Earth’s crust is…..

* The most abudent element in the atmosphere is………

* The most abundant rare gas in the atmosphere is………..

* Which is also called Stranger gas………….

* Which is also called Stranger gas………….

* All noble gases are……..

* What is Calcium Sulphate ……..

* Atomic number of carbon is ………..

* Isotopes of hydrogen is ………..

* Human bone does not contain …………

* Who proposed first Atomic theory …..

* Which have the maximum density………….

* Which of the following gas easily soluble in water at room temperature ….

* Which of the following is softest……….

* Which of the metal is called future metal……..

* Which have maximum number of isotopes………..

* Which metal is best conductor of electricity………..

* How heat of sun reaches on Earth…..

* The main constituent of Biogas is…………

* A mixture of water and alcohol can be separated by …………

* Chloroform can be used as…….

* Soap is prepared by boiling caustic soda with…..