What causes the permanent hardness of water?
Permanent hardness of water is caused by the presence of soluble salts of chlorides and sulfates of calcium and magnesium. Unlike temporary hardness, which can be removed by boiling, permanent hardness remains unless treated with a chemical process.
Select the option that is related to the fifth letter-cluster in the same way as the second letter-cluster is related to the first letter-cluster and th...
Select the option in which the words share the same relationship as that shared by the given pair of words.
Train : Travel
Statement. To maintain the structure of the Taj Mahal, a revival of Yamuna river is necessary.
Choose one of the following options.
A....
F is the brother of J. E is the sister of D. K is the sister of L. D is the son of L. J is the father of E. How is D related to F?
Four letter-clusters have been given, out of which three are alike in some manner and one is different. Select the one that is different.
Five to four in the following are similar in a certain way, so a group is formed.
Which of these is not related to this group?
RNJ, LHD, KGC, MIE, PKF
Select the option that is related to the third term on the same basis as the second term is related to the first term.
Zeal : Enthusiasm :: Abduct : ?
Select the set in which the numbers are related in the same way as are the numbers of the following set.
(NOTE : Operations should be performed o...
Which letter cluster will replace the question mark (?) to complete the given series?
ELSV, FJVR, GHYN, ?, IDEF
If × is coded as +, - is coded as ÷, ÷ is coded as × and + is coded as then
88 – 11 ÷ 2 × 24 = ?
