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- Question
When ice cubes are made, the entropy of water
Options- A. does not change
- B. decreases
- C. increases
- D. may either increase or decrease depending on the process used
- Correct Answer
- decreases
- 1. In water treatment plant, use of chloramines ensures __________
Options- A. taste and odour control
- B. weed control in reservoirs
- C. disinfection
- D. removal of permanent hardness Discuss
- 2. Which one of the following is commonly used for pulp bleaching in the paper industry?
Options- A. Mild sulphuric acid
- B. Glucose isomerase
- C. peroxide
- D. Iodine and water Discuss
- 3. The maximum fixation of solar energy is done by
Options- A. Bacteria
- B. Protozoa
- C. Fungi
- D. Green plants Discuss
- 4. Which of the following acts as best adsorbent?
Options- A. Charcoal
- B. Activated Charcoal
- C. Activated Coconut Charcoal
- D. Carbon black Discuss
- 5. Removal of carbon particles from air involves the principle of
Options- A. Precipitation
- B. Filteration
- C. Electrophoresis
- D. Sedimentation Discuss
- 6. Which of the following is not an Igneous Rock?
Options- A. Dolomite
- B. Granite
- C. Basalt
- D. Gabbro Discuss
- 7. Which of the following gases is known as "Laughing Gas"?
Options- A. Nitrous oxide
- B. Nitrogen peroxide
- C. Nitrogen
- D. Nitric oxide Discuss
- 8. Most liquids that conduct electricity are solutions of acids, bases and ______.
Options- A. Copper
- B. Aluminium
- C. Salts
- D. Iron Discuss
- 9. Which base is present in milk of magnesia?
Options- A. Magnesium hydroxide
- B. Ammonium hydroxide
- C. Sodium hydroxide
- D. Calcium hydroxide Discuss
- 10. Uranium found in Ladakh is an example of which type of resource?
Options- A. unnatural resources
- B. Actual resources
- C. Potential resources
- D. Biotic resources Discuss
Chemistry problems
Search Results
Correct Answer: disinfection
Correct Answer: peroxide
Correct Answer: Green plants
Correct Answer: Activated Coconut Charcoal
Correct Answer: Electrophoresis
Correct Answer: Dolomite
Correct Answer: Nitrous oxide
Correct Answer: Salts
Correct Answer: Magnesium hydroxide
Correct Answer: Potential resources
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