NaCl(s) does NOT conduct electricity but NaCl(aq) does. This is because?
A. NaCl(s) is non-ionic but NaCl(aq) is ion B. NaCl(aq) contains mobile electrons, where absent in NaCl(s). C. NaCl(aq) contains mobile ions which Nacl,) does not contain. D. NaCl(s) ionizes partiality while NaCl(aq) iodizes completely. E. NaCl(s) decomposes when...
The green colour solution of Fe²+ salt changes to a brown solution of Fe³+ salt by?
A. conversion. B. elimination. C. oxidation. D. reduction. E. substitution. Correct Answer: Option C – oxidation
Which method is NOT used to determine rate of a reaction?
A. change in amount of precipitate formed B. change in equilibrium constant C. change in intensity of colour D. change in pH values. E. change in total gas pressure Correct Answer: Option B – change in equilibrium...
A gas X diffuse through porous partition at the rate of 3cm³ per second. Under the same condition hydrogen diffused at the rate of 15cm³ per second. What is the relative molecular mass of X?
A. 5 B. 12 C. 18 D. 45 E. 50 Correct Answer: Option E – 50
Faraday s first law of electrolysis can be expressed mathematically as?
A. m = I/it B. m α it C. Q = it D. Q α I/it E. Q α it Correct Answer: Option B – m α itProducts
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