A. CH B. CH2 C. P2O5 D. N2O4 Correct Answer: Option D Explanation The empirical formula is always in the…
A. reactivity and oxidation respectively B. conductivity and corrosiveness respectively C. melting point and reduction respectively D. electronegativity and solubility…
A. Unlike gases, vapours are liquids at room temperature B. Unlike gases, vapour can easily be condensed into liquids C.…
A. The water is at lower temperature than the ice B. Energy is absorbed when the ice changes to water…
A. particle size of the reactants B. vigorous stirring of the reaction mixture C. presence of a catalyst D. change…
A. production of ammonia B. manufacture of cement C. photosynthesis D. combustion Correct Answer: Option C C. photosynthesis Explanation Photosynthesis…
A. water B. carbon(IV) oxide C. fire blanket D. sand Correct Answer: Option B B. carbon(IV) oxide Explanation In order…
A. Fe and C B. Fe and Ni C. Fe, C and Ni D. Fe, C and Al Correct Answer:…
A. 3s orbital B. 2px C. 2s orbital D. 1s orbital Correct Answer: Option A Explanation 12Mg=2,8,2 =1s²2s²2p63s²
A. mechanism of electrolysis B. electrolytic reactions C. nature of the electrode D. type of electrolytic cell Correct Answer: Option…