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General Knowledge - Chemistry

Exercise : Chemistry - Section 1
  • Chemistry - Section 1
41.
The hydronium ion is
H+
HO -
H2+
H3O+
Answer: Option
Explanation:
No answer description is available. Let's discuss.
42.
The most electropositive elements among the following is
Na
Ca
K
Cs
Answer: Option
Explanation:
No answer description is available. Let's discuss.
43.
The method that cannot be used for removing permanent hardness of water is
adding sodium carbonate
distillation
adding caustic soda
boiling
Answer: Option
Explanation:
No answer description is available. Let's discuss.
44.
The following are the half lives of four active isotopes. Which one of the following is the most dangerous to handle?
3 billion years
100 years
0.01 minute
13 days
Answer: Option
Explanation:
No answer description is available. Let's discuss.
45.
The gas used for artificial ripening of green fruit is
ethylene
ethane
carbon dioxide
acetylene
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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