Question
Which of the following two chemical reactions are
involved in the corrosion of the iron metal?Solution
Corrosion is defined as the chemical or electrochemical degradation of metals due to their reaction with the environment. The corrosion of ironknown as rusting, is an oxidation-reduction process that destroys iron objects left out in open, moist air. When iron metal is exposed to oxygen and water, a familiar result is observed-rust.Combining the oxidation and reduction half-reactions gives the balanced chemical equation for the overall reaction of iron, oxygen, and water.
The _____ amendement got "Fundamental Duties" added to the Constitution of India?
In Portfolio assessment, which of the following should be given priority?
William Kilpatrick popularised the __________.
In order for pre-service teachers to know his/her values, personality, interest & aptitude. They will use:
Which assessment type is NOT related to teaching-learning process?
If you want to improve the ability to observe in children, which of the following would you recommend?
Which educational psychologist believed in the fact that 'All children have the potential to learn'?
Which of the following statements defines the basic philosophy, theory, and practice of teaching children according to critical pedagogy?
Which assessment technique involves students working together to solve a problem or complete a task?
An end-of-year evaluation that determines promotion to the next grade is an example of:
