Discussion
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- Question
Which of the following molecules is joined by a double covalent bond?
Options- A. Cl2
- B. O2
- C. N2
- D. He2
- Correct Answer
- O2
- 1. 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
- 2. Which one of the following is a bad Thermal Conductor?
Options- A. Aluminium
- B. Copper
- C. Glass
- D. Silver Discuss
- 3. Which amongst the following is not a Cation?
Options- A. Aluminium ion
- B. Copper ion
- C. Sulphate ion
- D. Zinc ion Discuss
- 4. Which of the following is not a component of Smog?
Options- A. Volatile organic compounds
- B. Nitrogen Oxide
- C. Sulphur dioxide
- D. Chlorine oxide Discuss
- 5. Which among the following is an endothermic reaction?
Options- A. Respiration
- B. Combustion
- C. Sweating
- D. Burning of natural gas Discuss
- 6. 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
- 7. The electronic dot and cross structure of ethene is ............
Options- A. A)
- B. B)
- C. C)
- D. D) Discuss
- 8. The atoms of Germanium, Arsenic, Selenium and Bromine contain ...... shells.
Options- A. 3
- B. 7
- C. 5
- D. 4 Discuss
- 9. 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
- 10. 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
Chemistry problems
Search Results
Correct Answer: Chlorofluro carbon
Correct Answer: Glass
Correct Answer: Sulphate ion
Correct Answer: Chlorine oxide
Correct Answer: Sweating
Correct Answer: Nuclear force
Correct Answer: C)
Correct Answer: 4
Correct Answer: Ammonium chloride
Correct Answer: 109
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