Options:
- A. H2S2O3
- B.H2SO8
- C. H2S4O6
- D. H2 S2 O6
View Answer
B.H2SO8
Chemistry
Which metal is used as a reducing agent in Smelting______?
Options:
- A. C
- B. Zn
- C. Al
- D. Cu
View Answer
A. C
Water molecule is________?
Options:
- A. V-shaped
- B. Angular
- C. Pyramidal
- D. Triangular planer
View Answer
A. V-shaped
Which of the following compounds is not soluble in HNO3___?
Options:
- A. CuS
- B. CdS
- C. PbS
- D. AgCl
View Answer
D. AgCl
Process used to separate insoluble particles from liquids is ___________ ?
Options:
- A. Drying
- B. Filtration
- C. Sieving
- D. Extraction
View Answer
B. Filtration
Which is fused cyclic aromatic compound _____________________?
Options:
- A. diphenyl amine
- B. diphenyl methane
- C. naphthalene
- D. biphenyl
View Answer
C. naphthalene
Silicon differ from silica by a group of__________________?
Options:
- A. Ch3
- B. OH
- C. OCH3
- D. O2
View Answer
A. Ch3
CO2 is gas while SiO2 is solid at room temperature?
Options:
- A. carbon is non-metal while silicon is semi-metal
- B. CO2 is an independent molecule while SiO2 has network covalent structure
- C. CO2 forms multiple bond while silicon does not form multiple bonds
- D. Silicon has all sigma bonds
View Answer
B. CO2 is an independent molecule while SiO2 has network covalent structure
The chemical composition of cinnabar is__________________?
Options:
- A. ZnS
- B. PbS
- C. HgS
- D. FeS
View Answer
C. HgS
Oxygen does not react with all except_________________?
Options:
- A. Alkali
- B. Acid
- C. Water
- D. Metals
View Answer
D. Metals