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- Question
Which of the following can be beaten and converted into thin sheets?
Options- A. Zinc
- B. Phosphorus
- C. Sulphur
- D. Oxygen
- Correct Answer
- Zinc
- 1. What is the process of melting also called?
Options- A. Fusion
- B. Galvanisation
- C. Crystallisation
- D. Evaporation Discuss
- 2. Which base is present in lime water?
Options- A. Sodium hydroxide
- B. Magnesium hydroxide
- C. Calcium hydroxide
- D. Ammonium hydroxide Discuss
- 3. 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
- 4. Bauxite is used as raw material by which industry
Options- A. Aluminium
- B. Iron
- C. Steel
- D. Gold Discuss
- 5. The reaction of Copper Sulphate and Iron produces Iron Sulphate and __________.
Options- A. Vinegar
- B. Ash
- C. Baking Soda
- D. Copper Discuss
- 6. Removal of carbon particles from air involves the principle of
Options- A. Precipitation
- B. Filteration
- C. Electrophoresis
- D. Sedimentation Discuss
- 7. 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
- 8. Of the following commonly used materials, the one that is not an alloy is
Options- A. Steel
- B. Brass
- C. Bronze
- D. Copper Discuss
- 9. Which of the following has pH value 7?
Options- A. Pure Water
- B. H2SO4
- C. Sodium Carbonate
- D. HCl Discuss
- 10. 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
Chemistry problems
Search Results
Correct Answer: Fusion
Correct Answer: Calcium hydroxide
Correct Answer: hydrocarbons of petroleum
Correct Answer: Aluminium
Correct Answer: Copper
Correct Answer: Electrophoresis
Correct Answer: Manganese
Correct Answer: Copper
Correct Answer: Pure Water
Correct Answer: Fat globules are dispersed in water
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