2003 General Studies, all questions
UPSC Prelims 2003 · General Studies
Question 145: Science and Technology
Which one of the following statements is correct?
aThe presence of NaCl increases the rate of setting of Plaster of Paris
bGypsum is added to the cement to slow down its rate of setting
cAll alkaline earth metals form hydrated salts
dBarium and Strontium are found free in nature
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 2003, General Studies. UPSC's own paper isn't online; the words are from a published compilation. The paper on upsc.gov.in.