Question
The density of the liquid when
heatedSolution
The mass density of a material varies with temperature and pressure. Increasing the temperature of a substance (with some exceptions) decreases its density by increasing the volume of that substance. In most materials, heating the bottom of a fluid results in convection of the heat from bottom to top of the fluid due to the decrease of the density of the heated fluid.
What proportion of India’s railway network had been electrified as reported in the Survey?Â
- What was India’s position in global pomegranate production as per APEDA’s latest data?
Kopra Reservoir, declared as Chhattisgarh’s first Ramsar site, is located in which district?Â
According to MoSPI’s Environmental Accounting on Forest 2025, India’s forest cover increased by how much between 2010–11 and 2021–22?Â
...- What is the maximum loan amount offered to households under PM Surya Ghar Muft Bijli Yojana?
What is the theme of the World Sustainable Development Summit (WSDS) 2025?
What was India's retail inflation (CPI) rate in June 2025, the lowest since January 2019?Â
 Which district secured the top spot in the North Eastern Region District SDG Index 2023-24?Â
- Which country overtook UAE as India’s top inward remittance source according to RBI’s 2025 bulletin?
- Which country has become India’s largest crude oil supplier in 2025, overtaking Saudi Arabia and Russia?
Relevant for Exams:
