Question

activity 1.3 How close do you have to go near unlit incense stick it so as to get it smell? for a light the increase stick do you get the smell sittng at a distance? write your observations class 9th ch-1​

Answer 1

Answer:

Hi,

Explanation:

We know that an Olfactory indicator is a substance whose smell varies depending on whether it is mixed with an acidic or basic solution. Olfactory indicators can be used in the laboratory to test whether a solution is a base or an acid, a process called olfactory titration.

Answer 2

Answer:

Put an unlit incense stick in a corner of your class. How close do you have to go near it so as to get its smell?

• Now light the incense stick. What happens? Do you get the smell sitting at a distance?

• Record your observations.

NCERT Class 9th Science Ch 1 Matter in Our Surroundings