Carbon and its Compounds — Science STD 10 — Question

State whether the following statement is true or false:
Refraction occurs because light slows down in denser materials.

When resistors are connected in series, the sum of the currents in them is the current drawn from cell. [True/ False]

When resistors are connected in parallel, the sum of the currents in them is the current drawn from cell. [True/ False]

State whether the following statement is true or false:
A student says that we can see an object because light from our eyes is reflected back by the object

Rancidity can be slowed down by storing foods away from light. [True/ False]

As one senses a clockwise current on one side of a coil, it will behave as a south pole. [True/False]

The Chipko Andolan was associated with saving of tigers.

State whether the following statements are true or false:
The elements in a group have consecutive atomic numbers.

Convex mirror and convex lens always form virtual image. [True/ False]

The electric wires made up of copper and aluminium. [True/ False]