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- Question
Kaolin is chemically classified as
Options- A. Argillaceous rock
- B. Silicious rock
- C. Metamorphic rock
- D. Calcareous rock
- Correct Answer
- Argillaceous rock
ExplanationKaolin is chemically classified as Argillaceous rock.
- 1. Ammonia can be dried by
Options- A. Sulphuric acid
- B. Calcium oxide
- C. Phosphorus pentoxide
- D. Calcium Chloride Discuss
- 2. Which properties are characteristic of the group 1 metals?
Options- A. Low melting points
- B. Produce hydrogen when react with water
- C. Soft in nature
- D. All of the above Discuss
- 3. The luster of a metal is due to presence of free electrons.
Options- A. TRUE
- B. FALSE Discuss
- 4. Which kind of energy is stored in a chemical bond?
Options- A. Potential energy
- B. Kinetic energy
- C. Both A & B
- D. None of the above Discuss
- 5. which of the following molecule contains a nonpolar covalent bond?
Options- A. Br2
- B. CO2
- C. CCl4
- D. CO Discuss
- 6. Shock resisting steels should have
Options- A. toughness
- B. low wear resistance
- C. low tensile strength
- D. low hardness Discuss
- 7. Non metal found in liquid state?
Options- A. Chlorine
- B. Bromine
- C. Fluorine
- D. Iodine Discuss
- 8. Permanent hardness of water may be removed by the addition of
Options- A. Alum
- B. Lime
- C. Sodium Carbonate
- D. Potassium Permanganate Discuss
- 9. Diamond is harder than Graphite because of
Options- A. tetrahedral structure of diamond
- B. difference of crystalline structures
- C. difference of layers of atoms
- D. hexagonal structure of graphite Discuss
- 10. A sample of matter must be copper if
Options- A. atoms in the sample react with oxygen
- B. the sample can conduct electricity
- C. each atom in the sample has 29 protons
- D. the sample melts at 1768k Discuss
Chemistry problems
Search Results
Correct Answer: Calcium Chloride
Explanation:
Ammonia can be dried by Calcium Chloride or calcium hydroxide.
Correct Answer: All of the above
Explanation:
Group 1 metals are also called as alkali metals with reactive in nature and low melting points. They are soft and produce hydrogen and alkaline metal hydroxide solution when they react with water.
Correct Answer: TRUE
Explanation:
True, The luster of a metal is due to presence of free electrons. Luster means shine or soft glow. We know that metals have the quality of reflecting light from its surface.
Correct Answer: Potential energy
Correct Answer: Br2
Explanation:
Br-Br.
In Br2, two of the same atoms, pull on each side of the bond is equal making it as non-polar.
The other options all include a significantly more electronegative atom (the oxygens and the chlorine), so those bonds are all polar covalent.
Correct Answer: toughness
Explanation:
Shock resisting steels should have toughness.
S-5 is a silico-manganese shock resisting steel that offers good ductility.
Correct Answer: Bromine
Explanation:
Bromine is the Non metal found in liquid state.
Correct Answer: Sodium Carbonate
Explanation:
Permanent hardness of water may be removed by the addition of Sodium Carbonate.
Correct Answer: difference of crystalline structures
Correct Answer: each atom in the sample has 29 protons
Explanation:
A sample of matter must be copper if each atom in the sample has 29 protons.
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