Discussion
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- Question
Which of the following elements has the lowest melting point?
Options- A. Oxygen
- B. Gold
- C. Silver
- D. Manganese
- Correct Answer
- Oxygen
- 1. Alpha particles are ___________.
Options- A. twice the mass of beta particles
- B. negatively charged
- C. just like helium nuclei
- D. lower in ionizing power as compared to gamma rays Discuss
- 2. The temperature at which a solid melts to become a liquid at the atmospheric pressure is called its ___________.
Options- A. Crystallisation
- B. Melting point
- C. Evaporation
- D. Galvanisation Discuss
- 3. Chemical formula for sulphurous acid is:
Options- A. H2SO4
- B. H2SO3
- C. H3SO3
- D. H3SO4 Discuss
- 4. Which of the following statement(s) is/are INCORRECT regarding Phosphorus?
Options- A. Phosphorus reacts vigorously with water
- B. It is a non-metal
- C. It catches fire on reacting with air
- D. It is found in group 15 of the modern periodic table Discuss
- 5. ___________ is obtained by evaporation of sea.
Options- A. Sugar
- B. Iron
- C. Salt
- D. Steel Discuss
- 6. What is the full form of PVC?
Options- A. Phosphonil vinyl Carbonate
- B. Polyvinyl S Carbonate
- C. Polyvinyl Carbonate
- D. Polyvinyl Chloride Discuss
- 7. Aromatic hydrocarbons contain at least _____ benzene like ring in their molecules.
Options- A. 4
- B. 3
- C. 2
- D. 1 Discuss
- 8. Chromite is an ore/mineral of
Options- A. Zinc
- B. Uranium
- C. Chromium
- D. Titanium Discuss
- 9. Which among the following is false about alpha particles?
Options- A. They have high ionizing power
- B. They have high penetrating power
- C. They have high kinetic energy
- D. They are positively charged helium nuclei Discuss
- 10. Which among the following is not a characteristic of oxidation reaction?
Options- A. It involves addition of hydrogen
- B. It involves addition of oxygen
- C. It involves loss of electrons
- D. 4) It involves addition of electronegative element Discuss
Chemistry problems
Search Results
Correct Answer: just like helium nuclei
Correct Answer: Melting point
Correct Answer: H2SO3
Correct Answer: Phosphorus reacts vigorously with water
Correct Answer: Salt
Correct Answer: Polyvinyl Chloride
Correct Answer: 1
Correct Answer: Chromium
Correct Answer: They have high penetrating power
Correct Answer: It involves addition of hydrogen
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