Acids, Bases and Salts — Science STD 10 — Question

During extraction of metals, electrolytic refining is used to obtain pure metals. Material which will be used as anode, for refining of silver metal by this process, is :

The correct sequence of anaerobic reactions in yeast is:

The magnetic effect of current was discovered by:

The blue colour of sky is due to:

Sodium carbonate is a basic salt because it is a salt of a :

The mechanism of human body which facilitates the exchange of respiratory gases is called.

In the soap micelles:

Which of the following statement is correct :

In which of the following does the pyramid of numbers appear as inverted pyramid?

Assertion (A): The second trophic level of a food chain operating in a grassland is mostly occupied by a carnivore
Reason (R): Carnivores feed upon herbivores and are secondary consumers.