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- Question
How many elements are present in the group of the 18th Modem Periodic Table?
Options- A. 5
- B. 2
- C. 6
- D. 7
- Correct Answer
- 7
- 1. ........... is not a sub atomic particle of an atom.
Options- A. Neutron
- B. Electron
- C. Xenon
- D. Proton Discuss
- 2. ......... is a deliquescent compound.
Options- A. Quick lime
- B. Sulphuric acid
- C. Phosphorous pentoxide
- D. Magnesium chloride Discuss
- 3. 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
- 4. 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
- 5. The atoms of Germanium, Arsenic, Selenium and Bromine contain ...... shells.
Options- A. 3
- B. 7
- C. 5
- D. 4 Discuss
- 6. Which among the following is an example of solid sol?
Options- A. Milk of magnesia
- B. Foam
- C. Coloured gemstones
- D. Rubber Discuss
- 7. Which metal is responsible for Itai-Itai disease?
Options- A. Cadmium
- B. Nickel
- C. Chromium
- D. Mercury Discuss
- 8. Acid rain is caused due to pollution of atmosphere by
Options- A. oxides of nitrogen and sulphur
- B. oxides of nitrogen and phosphorous
- C. oxides of carbon and nitrogen
- D. oxides of nitrogen and methane Discuss
- 9. The most extensive use of molasses after fermentation is for producing
Options- A. Methanol
- B. Sugar
- C. Ethanol
- D. Sugarcane Discuss
- 10. Zeolite is
Options- A. hydrated ferric oxide
- B. hydrated sodium aluminium silicate
- C. sodium hexameta phosphate
- D. sodium tetra borate Discuss
Chemistry problems
Search Results
Correct Answer: Xenon
Correct Answer: Magnesium chloride
Correct Answer: 109
Correct Answer: Ammonium chloride
Correct Answer: 4
Correct Answer: Coloured gemstones
Correct Answer: Cadmium
Correct Answer: oxides of carbon and nitrogen
Correct Answer: Ethanol
Correct Answer: hydrated sodium aluminium silicate
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