In which of the following, the entropy decreases
Options
(a) Crystallisation of sucrose from solution (b) Rusting of iron (c) Melting of ice (d) Vaporization of champhor
Correct Answer:
Crystallisation of sucrose from […]
Which of the following does not contain aluminium
Options
(a) Cryolite (b) Fluorspar (c) Feldspar (d) Mica
Correct Answer:
Fluorspar
Explanation:
No explanation available. Be the first to write the explanation for this […]
After tow hours, the ratioactive substance becomes 1/16th of original amount. Then the half -life (in min) is
Options
(a) 60 min (b) 120 min (c) 30 min (d) 15 min
Correct Answer: […]
2017 Copyright Doctor Dreams Training Academy