Options:
- A. 2
- B. 3
- C. 4
- D. 5
View Answer
B. 3
Chemistry
Formula of Galena is________?
Options:
- A. PbS
- B. HgS
- C. AS2S3
- D. FeS2
View Answer
A. PbS
Ce58 is a member of__________?
Options:
- A. S-block
- B. P-block
- C. d-block
- D. f-block
View Answer
D. f-block
Ethylene diammine is ligand________?
Options:
- A. mono dentate
- B. Bi dentate
- C.
- D. Poly dentate
View Answer
B. Bi dentate
Which of the following solvents would best facilitate an SN2 substitution reaction?
Options:
- A. Water
- B. Hexane
- C. Dimethylflormamide
- D. Ethanol
View Answer
C. Dimethylflormamide
Tetraethyl lead is used as______?
Options:
- A.
- B.
- C.
- D.
View Answer
D.
In a molecule of carbon monoxide, what are the formal charges on the two atoms?
Options:
- A. Carbon=0, Oxygen=0
- B. Carbon= +1, Oxygen= -1
- C. Carbon= -1, Oxygen= +1
- D. Carbon=0, Oxygen= -1
View Answer
C. Carbon= -1, Oxygen= +1
The average salinity of sea water is________?
Options:
- A. 3%
- B.
- C.
- D.
View Answer
B.
Which of the following aqueous solutions would have the highest boiling point?
Options:
- A. 0.20 m glucose
- B. 0.20 m NaCl
- C. 0.15 m CaCl2
- D. 0.25 m sucrose
View Answer
C. 0.15 m CaCl2
The chemical (Ethyl Mercaptan) added to the otherwise odourless LPG cooking gas for imparting a detectable smell to the gas is a compound of:_______?
Options:
- A. Bromine
- B.
- C.
- D.
View Answer
D.