(i) Kesari dal is commonly used to adulterate:
1. Turmeric powder – It is mixed with turmeric to give it a bright yellow color.
2. Pulses – It is mixed with pulses like lentils to increase the quantity.
(ii) Ill effect: Consuming food adulterated with Kesari dal can lead to poisoning or severe stomach disorders due to the toxic properties of Kesari dal.
Assertion (A): The sum of the first fifteen terms of the AP $ 21, 18, 15, 12, \dots $ is zero.
Reason (R): The sum of the first $ n $ terms of an AP with first term $ a $ and common difference $ d $ is given by: $ S_n = \frac{n}{2} \left[ a + (n - 1) d \right]. $
Assertion (A): The sum of the first fifteen terms of the AP $21, 18, 15, 12, \dots$ is zero.
Reason (R): The sum of the first $n$ terms of an AP with first term $a$ and common difference $d$ is given by: $S_n = \frac{n}{2} \left[ a + (n - 1) d \right].$