3666: Which one of the following statements is not correct?
(a) The presence of NaCl increases the rate of setting of Plaster of Paris
(b) Gypsum is added to the cement to slow down its rate of setting
(c) All alkaline earth metals form hydrated salts
(d) Barium and Strontium are found free in nature
3667: In the case of a Test-tube baby
(a) fertilization takes place inside the test-tube
(b) development of the baby taken place inside the test-tube
(c) fertilization takes place outside the mother's body
(d) unfertilized egg develops inside the test-tube
3668: Match List I (Block) with List II (Author) and select the correct answer using the codes given below the lists :
List I List II
(Book) (Author)
A. Autobiography of and Unknown Indian 1. Mulk Raj Anand
B. India : A Wounded Civilization 2. Nirad C Chaudhuri
C. Confessions of a Lover 3. R K Narayan
D. The English Teacher 4. V S Naipaul
Codes:
A B C D
(a) 1 3 2 4
(b) 2 4 1 3
(c) 1 4 2 3
(d) 2 3 1 4
3669: In which one of the following countries did hundreds of people die in year 2004 as a result of flooding and mudslides triggered by Tropical Storm Jeanne?
(A) Ghana
(B) Haiti
(C) Colombia
(D) Sudan
3670: A schoolteacher has to select the maximum possible number of different groups of 3 students out of a total of 6 students. In how many groups any particular student will be included?
(a) 8
(b) 12
(c) 6
(d) 10