Question
Which of the following is a chemical
change?Solution
Rusting of iron is a chemical change because it forms a new substance (iron oxide) through a chemical reaction with oxygen and moisture. Heating and magnetization are physical changes as they don't alter the composition.
Approximately, what is the total food grain production in India currently?
According to the latest estimates for 2025-26, which state is the largest producer of rice in India?
Indicator plant for boron deficiency is:
What is approximately share of India in the global agri-trade?
Pusa giant is a variety of
The latin roots for the word âExtensionâ
In the composition of soil on volume basis soil water and soil air comprises 50%. What is the percent of mineral matter?
Carbon requirement of plant is met by absorbing:
An Enquiry into the Nature and Causes of Wealth of Nationsâ is the book of economist
Pulse crop gown for grain, fodder and green manure is:
Relevant for Exams:
