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A metallic atom loses its valence electron to form a/an _________?
A. an anion B. a cation C. an anion – cation D. none of these Submitted by :- Saqib Ali
Chemistry is given from ……language ?
A. Latin B. Greek C. Arabic D. None of these Submitted by :- Saqib Ali
Atoms of all the elements always contain in nucleus:
A. Proton and neutron B. Neutron and electron C. Proton D. Neutron Submitted by :- Jamil Ahmed
What is the mass of one mole of Iodine?
A. 74g B. 254g C. 127g D. 53g Submitted by :- Jamil Ahmed
The earth absorb radiation in Visible range but emit radiation at the same rate in the:
A. Ultra violet C. Infrared B. Gamma rays D. All of these Submitted by :- Saqib Ali
The rate of formation of ozone depends on the flux of:
A. visible radiation B. Ultra violet radiation C. Infrared radiation D. Gamma rays Submitted by :- Saqib Ali
Nitrate (NO3) ions are obtained by the process of __________?
A. Nitrification B. Fermentation C. Denitrification D. None of these Submitted by :- Saqib Ali
Which of the following particles has a negative charge?
A. Proton B. Neutron C. Electron D. Photon Submitted by :- Jamil Ahmed
Which subatomic particle has a negligible mass?
A. Proton B. Neutron C. Electron D. Photon Submitted by :- Mansoor Khan
Which of the following subatomic particles is responsible for chemical reactions?
A. Proton B. Neutron C. Electron D. Photon Submitted by :- Saqib Ali