A. Biphenyl B. Benzene C. Benzaldehyde D. Phenolphthalein
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A. Rubber B. Plastics C. Glass D. All
A. Saliva B. Blood C. Intestine D. Adrenal glands
A. Chlorine B. Bromine C. Iodine D. Mercury
A. An increase of boiling point B. No charge in boiling point C decrease of boiling point D. None of these
A. Propene B. Chloropropene C. Propyne D. Benzene
A. Cd B. Ni C. Sb D. Pb
A. Fusible B. Not easily reduced by the carbon C. Not easily reduced by the hydrogen D. Strongly basic
A. Bacteria are killed B. Dirt is removed C. Water is cleaned D. Suspension is removed
A. The same effective nuclear charge B. The imperfect shielding on outer electron C. The appreciable shielding on outer electrons D. None of these