Discussion
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- Question
Brown stains in vessels and clothes indicate the presence of high quantities of ________ in water
Options- A. Magnesium
- B. Calcium
- C. Manganese
- D. Chromium
- Correct Answer
- Manganese
- 1. Removal of carbon particles from air involves the principle of
Options- A. Precipitation
- B. Filteration
- C. Electrophoresis
- D. Sedimentation Discuss
- 2. Which of the following can be beaten and converted into thin sheets?
Options- A. Zinc
- B. Phosphorus
- C. Sulphur
- D. Oxygen Discuss
- 3. What is the process of melting also called?
Options- A. Fusion
- B. Galvanisation
- C. Crystallisation
- D. Evaporation Discuss
- 4. Which base is present in lime water?
Options- A. Sodium hydroxide
- B. Magnesium hydroxide
- C. Calcium hydroxide
- D. Ammonium hydroxide Discuss
- 5. Synthetic detergents are prepared from
Options- A. potassium salts of higher fattyacids
- B. sodium salts of higher fattyacids
- C. hydrocarbons of petroleum
- D. glycerides Discuss
- 6. Of the following commonly used materials, the one that is not an alloy is
Options- A. Steel
- B. Brass
- C. Bronze
- D. Copper Discuss
- 7. Which of the following has pH value 7?
Options- A. Pure Water
- B. H2SO4
- C. Sodium Carbonate
- D. HCl Discuss
- 8. 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
- 9. What is contained in Chlorophyll ?
Options- A. sodium
- B. potassium
- C. manganese
- D. magnesium Discuss
- 10. Which of the metals has the maximum thermal conductivity?
Options- A. Iron
- B. Aluminium
- C. Silver
- D. Copper Discuss
Chemistry problems
Search Results
Correct Answer: Electrophoresis
Correct Answer: Zinc
Correct Answer: Fusion
Correct Answer: Calcium hydroxide
Correct Answer: hydrocarbons of petroleum
Correct Answer: Copper
Correct Answer: Pure Water
Correct Answer: Fat globules are dispersed in water
Correct Answer: magnesium
Correct Answer: Silver
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