Options:
- A. 6.0
- B. 6.5
- C. 7.0
- D.7.5
View Answer
B. 6.5
Chemistry
Which one of the following is most acidic?
Options:
- A. Phenol
- B. P-nitrophenol
- C. O-nitrophenol
- D. M-nitrophenol
View Answer
B. P-nitrophenol
The PH of Tears is __________?
Options:
- A. 7.0
- B. 7.4
- C. 7.8
- D. 8.2
View Answer
B. 7.4
Chlorine Cl when attached to benzene has________?
Options:
- A. +I and +R effect
- B. -1 and +R effect
- C. +1 and -R effect
- D. -I and -R effect
View Answer
B. -1 and +R effect
The PH of pure water at 25
Options:
- A. 0
- B. 7
- C. 14
- D. None of above
View Answer
B. 7
The criteria for aromaticity is presence of_________?
Options:
- A. Unsaturations
- B. Cyclic structure
- C. Presence of 4n? electrons
- D. Presence of 4n+2? electrons
View Answer
D. Presence of 4n+2? electrons
When 0.01 moles of NaOH are added to a buffer solution, its PH changes from 4.745 to 4.832. What is its?
Options:
- A. 0.115
- B. 0.900
- C. 0.015
- D. 0.215
View Answer
A. 0.115
The bond angle between hybrid orbitals in methane CH3 is___________?
Options:
- A. 115.5
- B. 109.5
- C. 105. 7
- D. 180
View Answer
B. 109.5
Alpha particles can be detected by using___________?
Options:
- A. Gold foils
- B. Barium sulphate
- C. Zinc sulphide screen
- D. Thin Aluminium sheet
View Answer
C. Zinc sulphide screen
The bond length of C=C is___________?
Options:
- A. 1.20A
- B. 1.34A
- C. 1.54A
- D. 1.68A
View Answer
D. 1.68A