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
CHEMISTRY
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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
Which of the following is not a type of subatomic particle?
A. Proton
B. Neutron
C. Photon
D. Electron
Submitted by :- Saqib Ali
Which of the following is not a type of radioactivity?
A. Alpha radiation
B. Beta radiation
C. Gamma radiation
D. Delta radiation
Submitted by :- Mansoor Khan