Discussion
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- Question
What are the main components of Brass Alloy?
Options- A. Copper and Zinc
- B. Copper and Strontium
- C. Copper, Zinc and Nickel
- D. Copper and Nickel
- Correct Answer
- Copper and Zinc
- 1. What is an exothermic reaction?
Options- A. Reaction in which heat is released.
- B. Reaction in which heat is absorbed.
- C. Reaction in which neither heat is released nor absorbed.
- D. None Discuss
- 2. What is the common characteristic of the elements of the same group in the periodic table?
Options- A. Electrons in outer most shell
- B. Total number of electrons
- C. Total number of protons
- D. Atomic weight Discuss
- 3. Which one of the following forms of phosphorus is most reactive?
Options- A. Black phosphorus
- B. White phosphorus
- C. Violet phosphorus
- D. Red phosphorus Discuss
- 4. Calcium salts used as fertilizer is:
Options- A. Calcium Carbide
- B. Calcium Carbonate
- C. Calcium Cyanide
- D. Calcium Sulphate Discuss
- 5. Which of the following is not a type of chemical weathering?
Options- A. Corrosion
- B. Solution
- C. Oxidation
- D. Carbonation Discuss
- 6. What is the common name of Sodium Bicarborate?
Options- A. Baking Soda
- B. Washing Powder
- C. Plaster of Paris
- D. Fly Ash Discuss
- 7. Which of the following is a chemical formula of quicklime?
Options- A. Ca2O
- B. Ca2CO3
- C. CaO2
- D. CaO Discuss
- 8. The common name of dichlorodifluoromethane is _____.
Options- A. galena
- B. Freon
- C. gypsum
- D. borax Discuss
- 9. Which of the following elements has the lowest melting point?
Options- A. Xenon
- B. Iodine
- C. Barium
- D. Magnesium Discuss
- 10. In an acid base reaction which product is produced along with a salt?
Options- A. Hydrogen gas
- B. Water
- C. Oxygen gas
- D. Carbon dioxide Discuss
Chemistry problems
Search Results
Correct Answer: Reaction in which heat is released.
Correct Answer: Electrons in outer most shell
Correct Answer: White phosphorus
Correct Answer: Calcium Sulphate
Correct Answer: Corrosion
Explanation:
Chemical weathering is the process of altering rocks chemically when they are broken down. It includes hydrolysis, oxidation, acid rain, etc...
Correct Answer: Baking Soda
Correct Answer: CaO
Correct Answer: Freon
Correct Answer: Xenon
Correct Answer: Water
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