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- Question
The gas used for artificial ripening of green fruit is
Options- A. ethylene
- B. ethane
- C. carbon dioxide
- D. acetylene
- Correct Answer
- ethylene
- 1. The method of concentrating the ore which makes use of the difference in density between ore and impurities is called
Options- A. liquation
- B. leaching
- C. levigation
- D. magnetic separation Discuss
- 2. The monomer of polythene is
Options- A. vinyl chloride
- B. ethylene
- C. ethyl alcohol
- D. None of the above Discuss
- 3. The ionic radii of N3-, O2-, F- and Na+ follows the order
Options- A. N3- > O2- > F- > Na+
- B. N3- > Na+ > O2- > F-
- C. Na+ > O2- > N3- > F-
- D. O2- > F- > Na+ > N3- Discuss
- 4. The National Chemical Laboratory is situated in
Options- A. New Delhi
- B. Bangalore
- C. Pune
- D. Patna Discuss
- 5. The mass of one Avogadro number of helium atom is
Options- A. 1.00 gram
- B. 4.00 gram
- C. 8.00 gram
- D. 4 x 6.02 x 1023 gram Discuss
- 6. The most electropositive elements among the following is
Options- A. Na
- B. Ca
- C. K
- D. Cs Discuss
- 7. The inexpensive and commonly used variety of glass is called soda glass. It is called so because
Options- A. was used initially for making bottles of soda(carbonated drink)
- B. is made using soda(sodium carbonate)
- C. was initially used for storing sodium carbonate
- D. is made using soda lime Discuss
- 8. The inert gases are ____ in water
Options- A. sparingly soluble
- B. insoluble
- C. soluble
- D. None of these Discuss
- 9. The number of moles of solute present in 1 kg of a solvent is called its
Options- A. molality
- B. molarity
- C. normality
- D. formality Discuss
- 10. The oil used in the froth floatation process is
Options- A. coconut oil
- B. olive oil
- C. kerosene oil
- D. pine oil Discuss
Chemistry problems
Search Results
Correct Answer: levigation
Correct Answer: ethylene
Correct Answer: N3- > O2- > F- > Na+
Correct Answer: Pune
Correct Answer: 4.00 gram
Correct Answer: Cs
Correct Answer: is made using soda(sodium carbonate)
Correct Answer: sparingly soluble
Correct Answer: molality
Correct Answer: pine oil
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