Finding the incorrect statement — task. Chemistry CBSE Live product, Class 7 (2026-27).

Choose the incorrect statement in the following questions:

1. A student observes smoke rising from a burning incense stick. Which statement is incorrect?

The burning incense heats the surrounding air
The rising smoke can provide evidence of upward movement of air
The smoke can be carried by moving warm air
The smoke rises because the incense stick points in the same direction as the smoke

2. Which statement correctly describes the relationship between temperature difference and convection?

A temperature difference can lead to movement of warmer and cooler portions of a fluid
Convection stops becoming weaker when temperature differences decrease
Convection requires all parts of a fluid to have exactly the same temperature
Temperature differences have no connection with convection

Did you find an error?

4. Finding the incorrect statement