A. Hydrogen B. Helium C. Carbon dioxide D. Argon
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A. Only in one direction B. Only in a fixed path C. Randomly in all directions D. Upward and downward only
A. A black solid residue left when sugar is heated B. Nitrogen gas C. Air D. Carbon dioxide
A. Element B. Compound C. Mixture D. None of these
A. Methane B. Butane C. Helium D. Ethylene
A. Hydrogen B. Oxygen C. Helium D. Carbon dioxide
A. Tartaric acid B. Citric acid C. Acetic acid D. Lactic acid
A. Isobutane B. Ethyl Marcaptan C. Theol D. Ethyl chloride
A. Steel B. Stainless steel C. Cast iron D. Wrought iron
A. Argentum B. Aurum C. Cuprum D. Kalium