Q3. Which of the following phenomenon is considered responsible for Global Warming?
Q4. The names of the scientists, Newlands, Mendeleev, and Meyer are associated with the development of
Q6. Equal masses of oxygen, hydrogen and methane are kept under identical conditions. The ratio of the volumes of gases will be
Q7. The National Chemical Laboratory is situated in
Q8. The number of atoms present in 21.6 gram of silver (atomic weight = 108) are same as the molecules in
Q9. The number of waves made by an electron moving in an orbit having maximum magnetic quantum number is +3
Q10. The half life period of an isotope is 2 hours. After 6 hours what fraction of the initial quantity of the isotope will be left behind?

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