A. Einstein B. Bohr C. Planck D. S N Bose
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A. Ar B. Kr C. Xe D. Ra
A. He B. Ne C. Ar D. Rn
A. Losing electron B. Gaining electron C. Sharing electron D. All of these are correct
A. One B. Two C. Three D. Zero
A. Coagulation B. Absorption C. Electrophoresis D. Tyndall effect
A. Solid B. Liquid C. Gas D. All of these