2004 General Studies, all questions
UPSC Prelims 2004 · General Studies
Question 72: Science and Technology
Assertion (A): In our houses, the current in AC electricity line changes direction 60 times per second. Reason (R): The frequency of alternating voltage supplied is 60 hertz.
aBoth A and R are individually true and R is the correct explanation of A
bBoth A and R are individually true but R is not the correct explanation of A
cA is true but R is false
dA is false but R is true
The published answer to this question looks wrong to us, so none is shown until it has been checked.
Source: UPSC, Civil Services (Preliminary) Examination 2004, General Studies. UPSC's own paper isn't online; the words are from a published compilation. The paper on upsc.gov.in.