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- Question
Which phase change is an example of an exothermic process?
Options- A. Liquid to Solid
- B. Gas to Solid
- C. Gas to Liquid
- D. All the above
- Correct Answer
- All the above
ExplanationProcesses that require or give off heat will be limited to changes of state, known as phase changes, and changes in chemical constitution, or chemical reactions. Changes of state involve a solid melting, a liquid freezing, a liquid boiling or a gas condensing.
An exothermic process is one that gives off heat, which is transferred to the surroundings. An endothermic process is a reaction which heat has to be supplied to the system from the surroundings.
Here in all the given options, heat is taken away from them to change there phase.
Liquid to Solid --- Freezing
Gas to Liquid --- Condensation
Gas to Solid --- Deposition
are all examples of exothermic processes.
- 1. Cartography is the science of
Options- A. coins
- B. maps
- C. cartoons
- D. None of the above Discuss
- 2. What allows a cell to respond to a hormone?
Options- A. hormone response element
- B. presence of hormone receptor
- C. Adrenocorticotropic
- D. None of the above Discuss
- 3. Jesse Owens Global award is given in the field of
Options- A. Literature
- B. Journalism
- C. Science
- D. Sports Discuss
- 4. A person who knows many foreign languages
Options- A. Grammarian
- B. Polyglot
- C. Linguist
- D. Bilingual Discuss
- 5. who was the first non-human to win an Oscar?
Options- A. Pussycat
- B. Mickey Mouse
- C. Ninja
- D. Bender Discuss
- 6. What is the major source of dietary sulfur?
Options- A. Proteins
- B. Carbohydrates
- C. Mineral salts
- D. All of the above Discuss
- 7. Exercise frequency refers to
Options- A. number of times you exercise per week
- B. number of times you exercise per month
- C. number of times you exercise per day
- D. All of the above Discuss
- 8. Which macronutrient is vital for every function of the body?
Options- A. Fats
- B. Carbohydrates
- C. Water
- D. Proteins Discuss
- 9. Teens who drink are at risk of
Options- A. HIV and other STDs
- B. becoming an alcoholic
- C. date rape
- D. All of the above Discuss
- 10. Who was the first person to receive a Jnanpith award for a Telugu work ?
Options- A. C. Narayana reddy
- B. Viswanatha Satyanarayana
- C. Ravuri Bharadwaja
- D. Srirangam Srinivasarao Discuss
More questions
Correct Answer: maps
Explanation:
Cartography is the science which deals with the study and practice of making maps.
Correct Answer: presence of hormone receptor
Correct Answer: Sports
Correct Answer: Linguist
Correct Answer: Mickey Mouse
Explanation:
Mickey Mouse was the first non-human to win an Oscar in 1932.
Walt Disney won the first of his many Oscars for the creation of Mickey Mouse.
Correct Answer: Proteins
Explanation:
Protein cantaining foods are the major source of dietary sulfur. Foods like eggs are rich in sulfur content.
Correct Answer: number of times you exercise per week
Explanation:
Exercise frequency refers to number of times you exercise per week.
Correct Answer: Water
Explanation:
The macronutrient water is the most essential nutrient which plays a vital role in every function of the body. Macronutrients are those nutrients that are required in excess amounts for the development and functioning of the body.
Correct Answer: All of the above
Correct Answer: Viswanatha Satyanarayana
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