Chemistry - Single MCQs (Page 43)

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Q421. Phenolphthalein in acidic solution is?...Q422. Preservatives are used to preserve?...Q423. When acid reacts with metal carbonate, products are?...Q424. By which number the quality of gasoline’ sample is determined?...Q425. Which gas is mostly produced along with salt when acid reacts with metals?...Q426. Which of the following acid is found vinegar in ?...Q427. In dry cell, which of the following are used as electrolytes?...Q428. Gastric Juice is ?...Q429. The chemical element which identifies the protein is?...Q430. Which pollutant in water causes ‘Blue baby syndrome’?...