Practice Practice test 3 - general science mcq Online Quiz (set-1) For All Competitive Exams
Q-1) Yellow colour of usual nitric acid is due to the presence of which one of the following?
(a)
(b)
(c)
(d)
Q-2) The only metal that is liquid at room temperature is -
(a)
(b)
(c)
(d)
Explanation:
Mercury is the only element even being metal is liquid at room temperature.
Q-3) The best mealleable metal is –
(a)
(b)
(c)
(d)
Q-4) Which is the hardest in the following?
(a)
(b)
(c)
(d)
Q-5) Naturally occuring substances from which a metal can be profitably (or economically) extracted are called?
(a)
(b)
(c)
(d)
Q-6) Which of the following reacts with cold water vigorously?
(a)
(b)
(c)
(d)
Q-7) Which is the most reactive metal?
(a)
(b)
(c)
(d)
Q-8) Which one among the following does not have an allotrope?
(a)
(b)
(c)
(d)
Q-9) Oxygen and ozone are
(a)
(b)
(c)
(d)
Q-10) The heaviest natural element is
(a)
(b)
(c)
(d)