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- Question
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
- Correct Answer
- Open system
- 1. Which of the metals has the maximum thermal conductivity?
Options- A. Iron
- B. Aluminium
- C. Silver
- D. Copper Discuss
- 2. What is contained in Chlorophyll ?
Options- A. sodium
- B. potassium
- C. manganese
- D. magnesium Discuss
- 3. 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
- 4. Which of the following has pH value 7?
Options- A. Pure Water
- B. H2SO4
- C. Sodium Carbonate
- D. HCl Discuss
- 5. Of the following commonly used materials, the one that is not an alloy is
Options- A. Steel
- B. Brass
- C. Bronze
- D. Copper Discuss
- 6. The main mineral constituents of the continental mass are ________ and alumina.
Options- A. iron oxide
- B. silica
- C. water
- D. oxygen Discuss
- 7. A change in which one or more new substances are formed is called _________.
Options- A. Physical Change
- B. Chemical Change
- C. Rusting
- D. Galvanisation Discuss
- 8. The salt concentration (measured as salinity in parts per thousand), is greater than _______ % in hypersaline lagoons.
Options- A. 50
- B. 100
- C. 150
- D. 200 Discuss
- 9. The process of depositing a layer of any desired metal on another material by means of electricity is called ___________.
Options- A. Electroplating
- B. Galvanisation
- C. Rusting
- D. Crystallisation Discuss
- 10. Oxide of which of the following will turn red litmus blue?
Options- A. Magnesium
- B. Phosphorus
- C. Sulphur
- D. Carbon Discuss
Chemistry problems
Search Results
Correct Answer: Silver
Correct Answer: magnesium
Correct Answer: Fat globules are dispersed in water
Correct Answer: Pure Water
Correct Answer: Copper
Correct Answer: silica
Correct Answer: Chemical Change
Correct Answer: 100
Correct Answer: Electroplating
Correct Answer: Magnesium
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