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.
If ‘P’ means (×), ‘Q’ means (÷), ‘R’ means (-), and ‘S’ means (+), then what is the value of the expression:
54 Q 6 S 14 P 14 R...
- Which two signs should be interchanged to correct the given equation?
5 + 3 × 8 – 12 ÷ 4 = 3 If '#' stands for '+', '!' stands for '-', '^' stands for 'X', and '*' stands for '÷', what will come in the place of (?) in the following equation? <...
Select the correct combination of mathematical signs to sequentially replace the * signs and to balance the given equation.
30 * 4 * 2 * 1 * 121
If '+' means '-', ' X ' means '+', '-' means '÷' and '÷' means ' X ', then what is the value of the following expression?
91 - 7 X 18 ÷ 5 + 10...
If ‘L’ denotes ‘addition’, ‘M’ denotes ‘multiplication’, ‘N’ denotes ‘subtraction’, ‘P’ denotes ‘division’, then what w...
Which two signs should be interchanged to make the following equation correct?
52 – 27 ÷ 9 + 7 × 5 = 20
What will come in place of ‘?’ in the given expression?
12 × 12 + 10² + 24 × (5/4) = ?
Which two signs should be interchanged to make the following equation correct?
9 × 10 ÷ 2 – 4 = 51 + 2Â
If ‘-‘ stands for division ‘+’ stands for subtraction ‘÷’ stands for multiplication ‘×’ stands for addition, then which one of the fol...
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