Discussion
Home ‣ General Knowledge ‣ Chemistry Comments
- Question
The number of waves made by an electron moving in an orbit having maximum magnetic quantum number is +3
Options- A. 4
- B. 5
- C. 2
- D. zero
- Correct Answer
- 4
- 1. The inherited traits of an organism are controlled by
Options- A. RNA molecules
- B. nucleotides
- C. DNA molecules
- D. enzymes Discuss
- 2. The number of electrons presents in H+ is
Options- A. zero
- B. one
- C. two
- D. three Discuss
- 3. The following are the half lives of four active isotopes. Which one of the following is the most dangerous to handle?
Options- A. 3 billion years
- B. 100 years
- C. 0.01 minute
- D. 13 days Discuss
- 4. The nucleus of a hydrogen atom consists of
Options- A. 1 proton only
- B. 1 proton + 2 neutron
- C. 1 neutron only
- D. 1 electron only Discuss
- 5. The most important ore of aluminium is
Options- A. bauxite
- B. magnetite
- C. haematite
- D. monazite Discuss
- 6. The number of atoms present in 21.6 gram of silver (atomic weight = 108) are same as the molecules in
Options- A. 1.8 gram of H2O
- B. 12 moles of KMnO4
- C. 0.6N H2SO4
- D. 4.6 gram of C2H5OH Discuss
- 7. The most commonly used bleaching agent is
Options- A. alcohol
- B. carbon dioxide
- C. chlorine
- D. sodium chlorine Discuss
- 8. The metal used to recover copper from a solution of copper sulphate is
Options- A. Na
- B. Ag
- C. Hg
- D. Fe Discuss
- 9. The main active constituent of tea and coffee is
Options- A. nicotine
- B. chlorophyll
- C. caffeine
- D. aspirin Discuss
- 10. The major constituent of air is
Options- A. nitrogen
- B. carbon dioxide
- C. oxygen
- D. hydrogen Discuss
Chemistry problems
Search Results
Correct Answer: DNA molecules
Correct Answer: zero
Explanation:
H+ is a hydrogen ion, and it is an ion because it LOST an electron. Electrons are negatively charged. When an atom gains electrons it will have NEGATIVE charges.
So it has zero electron.
Correct Answer: 0.01 minute
Correct Answer: 1 proton only
Correct Answer: bauxite
Correct Answer: 12 moles of KMnO4
Correct Answer: chlorine
Correct Answer: Fe
Correct Answer: caffeine
Correct Answer: nitrogen
Comments
There are no comments.More in General Knowledge:
Programming
Copyright ©CuriousTab. All rights reserved.