Options:
- A. H2
- B. CH4
- C. He
- D. NH3
View Answer
C. He
Chemistry
The number of d-electrons in Fe2+ (Z = 26) is not equal to that of____________?
Options:
- A. p-electrons in Ne(Z = 10)
- B.
- C.
- D.
View Answer
D.
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.
The volume strength of 1.5 N H2O2 solution is_______?
Options:
- A. 4.8
- B. 5.2
- C. 8.8
- D. 8.4
View Answer
D. 8.4
The reaction of Lucas reagent is the fastest with_________?
Options:
- A. (CH3)2CHOH
- B. CH3(CH2)OH
- C. CH3CH2OH
- D.
View Answer
D.
Elements which emit natural radioactivity are known as __________ ?
Options:
- A. Radio elements
- B. Active elements
- C. Radioactive elements
- D. Nuclear elements
View Answer
C. Radioactive elements
The formula of starch is__________________?
Options:
- A. C12H22O11
- B. C6H10O5
- C. (C6H10O5)n
- D. C6H12O6
View Answer
C. (C6H10O5)n
What is the molecular Weight of Nitric acid (HNO3 ) ?
Options:
- A. 63.012 g/mol
- B. 65.012 g/mol
- C. 70.012 g/mol
- D. 81.011 g/mol
View Answer
A. 63.012 g/mol
Polyethylene Glycols are used in the preparation of which type of detergents?
Options:
- A. Cationic detergents
- B. Anionic detergents
- C. Non-ionic detergents soap
- D. All of above
View Answer
C. Non-ionic detergents soap