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- Question
The atoms of Germanium, Arsenic, Selenium and Bromine contain ...... shells.
Options- A. 3
- B. 7
- C. 5
- D. 4
- Correct Answer
- 4
- 1. The electronic dot and cross structure of ethene is ............
Options- A. A)
- B. B)
- C. C)
- D. D) Discuss
- 2. The force that a neutron exerts on a proton inside an atom is:
Options- A. Tidal force
- B. Gravitational force
- C. Electrostatic force
- D. Nuclear force Discuss
- 3. Which of the following molecules is joined by a double covalent bond?
Options- A. Cl2
- B. O2
- C. N2
- D. He2 Discuss
- 4. Release of which among the following is the primary reason for depletion of the ozone layer?
Options- A. Nitrous oxide
- B. Hydrogen dioxide
- C. Chlorofluro carbon
- D. Carbon monoxide Discuss
- 5. Which one of the following is a bad Thermal Conductor?
Options- A. Aluminium
- B. Copper
- C. Glass
- D. Silver Discuss
- 6. Give an example of a salt which gives an aqueous solution of pH less than 7.
Options- A. Ammonium chloride
- B. Sodium carbonate
- C. Sodium bicarbonate
- D. Sodium chloride Discuss
- 7. The mass number of an isotope of an element is 298. If its nucleus has 189 neutrons, what is its atomic number?
Options- A. 298
- B. 189
- C. 109
- D. 487 Discuss
- 8. ......... is a deliquescent compound.
Options- A. Quick lime
- B. Sulphuric acid
- C. Phosphorous pentoxide
- D. Magnesium chloride Discuss
- 9. ........... is not a sub atomic particle of an atom.
Options- A. Neutron
- B. Electron
- C. Xenon
- D. Proton Discuss
- 10. How many elements are present in the group of the 18th Modem Periodic Table?
Options- A. 5
- B. 2
- C. 6
- D. 7 Discuss
Chemistry problems
Search Results
Correct Answer: C)
Correct Answer: Nuclear force
Correct Answer: O2
Correct Answer: Chlorofluro carbon
Correct Answer: Glass
Correct Answer: Ammonium chloride
Correct Answer: 109
Correct Answer: Magnesium chloride
Correct Answer: Xenon
Correct Answer: 7
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