Pure substances have a constant composition and can only be changed by what?
- Correct Answer: chemical reactions
- carbon reactions
- radiation
- growth
Explanation: Pure substances have a constant composition and can only be changed by chemical reactions. They can be classified as either elements or compounds.
More Random Questions
Q: When the rate of condensation becomes equal to the rate of vaporization, the vapor in the container is then said to be in what with the liquid?
Ans: equilibrium
Ans: equilibrium
Q: According to Charaka, which Rasayana is indicated for respiratory health?
Ans: Vasaka
Ans: Vasaka
Q: The temperature at which a substance melts is called its what point?
Ans: freezing
Ans: freezing
Q: Matter is composed of exceedingly small particles called what?
Ans: atoms
Ans: atoms
Q: In Bhaishajya Ratnavali, what is the Anupana for Triphala Churna in Pittaja disorders?
Ans: Cold water
Ans: Cold water
Q: How often should a vehicle’s clutch fluid be checked?
Ans: Every 6 months
Ans: Every 6 months
Q: What are the majority of solution properties dependent upon?
Ans: acid state of solute
Ans: acid state of solute
Q: What was a key global reaction to Trump’s tariffs in March 2025?
Ans: Increased alliances
Ans: Increased alliances
Q: On August 11, 2024, who was awarded the 'Pardo alla Carriera Award' at the Locarno Film Festival 2024?
Ans: Shahrukh Khan
Ans: Shahrukh Khan
Q: Who won the javelin throw gold at the Paris Olympics 2024?
Ans: Neeraj Chopra
Ans: Neeraj Chopra
Q: What was the expected impact of tariffs on U.S. consumer goods prices in 2025?
Ans: Increase
Ans: Increase
Q: Nitrogen & sulfur oxide combine with rain to form what?
Ans: acid rain
Ans: acid rain
Q: What is the purpose of the brake master cylinder?
Ans: Distributes brake fluid
Ans: Distributes brake fluid
Q: On August 6, 2024, in which Legislative Assembly was a bill for Scheduled Tribe reservation introduced?
Ans: Goa
Ans: Goa
Q: What was the famous Gupta iron pillar called?
Ans: Mehrauli Pillar
Ans: Mehrauli Pillar
