Chemistry miscellaneous
- Which of the following is caused by the higher concentration of Nitrogen and Phosphorous ?
-
View Hint View Answer Discuss in Forum
Higher concentration of Nitrogen and Phosphorus causes Eutrophication.
Correct Option: A
Higher concentration of Nitrogen and Phosphorus causes Eutrophication.
- The manufacture of iron from iron ore involves the process of
-
View Hint View Answer Discuss in Forum
The manufacture of iron ore involves the process of reduction. Important ores of iron: Haematite, Magnetite.
Correct Option: B
The manufacture of iron ore involves the process of reduction. Important ores of iron: Haematite, Magnetite.
- Chloroform can be used as
-
View Hint View Answer Discuss in Forum
Chloroform can be used as Anaesthetic. Chloroform (CHCl3) on heating with silver powder undergoes dehalogenation to form Ethyne.
Correct Option: B
Chloroform can be used as Anaesthetic. Chloroform (CHCl3) on heating with silver powder undergoes dehalogenation to form Ethyne.
- An element that does not occur in nature but can be produced artificially is
-
View Hint View Answer Discuss in Forum
Plutonium does not occur in nature.
Correct Option: C
Plutonium does not occur in nature.
- The ‘Green House effect’ is produced due to the presence of excess amount of
-
View Hint View Answer Discuss in Forum
By their percentage contribution to the greenhouse effect on Earth the four major gases are: Water vapour (36-70%), Carbon dioxide (9-26%), Methane (4-9%) and Ozone (3-7%).
Correct Option: D
By their percentage contribution to the greenhouse effect on Earth the four major gases are: Water vapour (36-70%), Carbon dioxide (9-26%), Methane (4-9%) and Ozone (3-7%).
