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- Question
Which of the following has pH value 7?
Options- A. Pure Water
- B. H2SO4
- C. Sodium Carbonate
- D. HCl
- Correct Answer
- Pure Water
- 1. Of the following commonly used materials, the one that is not an alloy is
Options- A. Steel
- B. Brass
- C. Bronze
- D. Copper Discuss
- 2. Brown stains in vessels and clothes indicate the presence of high quantities of ________ in water
Options- A. Magnesium
- B. Calcium
- C. Manganese
- D. Chromium Discuss
- 3. Removal of carbon particles from air involves the principle of
Options- A. Precipitation
- B. Filteration
- C. Electrophoresis
- D. Sedimentation Discuss
- 4. Which of the following can be beaten and converted into thin sheets?
Options- A. Zinc
- B. Phosphorus
- C. Sulphur
- D. Oxygen Discuss
- 5. What is the process of melting also called?
Options- A. Fusion
- B. Galvanisation
- C. Crystallisation
- D. Evaporation Discuss
- 6. Butter is colloid formed when
Options- A. Proteins are dispersed in water
- B. Water is dispersed in fat
- C. Fat globules are dispersed in water
- D. Carbohydrates are dissolved in water Discuss
- 7. What is contained in Chlorophyll ?
Options- A. sodium
- B. potassium
- C. manganese
- D. magnesium Discuss
- 8. Which of the metals has the maximum thermal conductivity?
Options- A. Iron
- B. Aluminium
- C. Silver
- D. Copper Discuss
- 9. Warming Ammonium chloride with sodium hydrochloride in a test tube is an example of
Options- A. Open system
- B. Closed system
- C. Isobaric system
- D. Isothermal system Discuss
- 10. The main mineral constituents of the continental mass are ________ and alumina.
Options- A. iron oxide
- B. silica
- C. water
- D. oxygen Discuss
Chemistry problems
Search Results
Correct Answer: Copper
Correct Answer: Manganese
Correct Answer: Electrophoresis
Correct Answer: Zinc
Correct Answer: Fusion
Correct Answer: Fat globules are dispersed in water
Correct Answer: magnesium
Correct Answer: Silver
Correct Answer: Open system
Correct Answer: silica
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