Question
Which of the following is an example of an olfactory
indicator?Solution
Olfactory indicators are substances that change their smell in the presence of acids or bases. Onion is an olfactory indicator because its characteristic smell diminishes in the presence of a base but remains unchanged in an acidic medium. This property helps distinguish between acidic and basic solutions through the sense of smell. Other examples of olfactory indicators include vanilla extract and clove oil, which behave similarly. In contrast, turmeric, China rose, and methyl orange are visual pH indicators that change color rather than smell in different pH environments.
What should come in place of the question mark (?) in the following question?
956 × 753 = ?
Find the smallest 3-digit number which when divided by 6, 8 and 9 leaves the same remainder 3 in each case.
Find the third proportion of 38 and 19.
What is the difference between 3/5 of 150 and 1/2 of 300?
- The divisor is 30% of the quotient and 3 times the remainder. If the remainder is 5, then what is the dividend?
What is the highest possible sum of (p + q) if the number '4p679q3' is divisible by 12?
Which of the following is a prime number?
Find the remainder when 3¹²⁵ is divided by 13.
Find the maximum number of trees which can be planted, 25 meters apart, on the two sides of a straight road 2125 meters long?
Find the number of zeroes in the product of 60 × 61 × 62 × ........ × 80?
Relevant for Exams:
