Question
Which of the following is a primary
pollutant?Solution
A primary pollutant is emitted directly from a source. CO is released from vehicles and industries, whereas O₃, H₂SO₄, and PAN are secondary pollutants formed by chemical reactions in the atmosphere.
If the word 'EXAMINATION' is arranged in alphabetical order from the right end, then which of the following letter will be the fourth letter to the righ...
If '+' means '-', ' X ' means '+', '-' means '÷' and '÷' means ' X ', then what is the value of the following expression?
78 - 3 X 18 ÷ 18 +...
If the following interchanges are made in signs, then what would be the value of the following expression?
16 ÷ 64 X 20 - 16 + 18
Interch...
If x stands for ‘addition’, ÷ stands for ‘subtraction’, + stands for ‘multiplication’, and – stands for ‘division’, then 80 x 54 –...
If 14 (16) 8 and 28 (20) 5, then what is the value of A in 63 (A) 4?
If P means ‘multiplied by’, T means ‘subtracted from’, M means ‘added to’ and B means ‘divided by’, then 40 B 8 P 8 T 14 M 9 = ?
...If ‘A’ means (×), ‘B’ means (÷), ‘C’ means (-), and ‘D’ means (+), then what is the value of the expression:
8 A 16 B 4 C 14...
If '@' means ' X ', '$' means '-', '#' means '÷', and '%' means '+', then what is the value of the expression: [75 % {(169 $ 15) # 11} @ 8]
If P denotes ‘multiplied by’, T denotes ‘subtracted from’, M denotes ‘added to’ and B denotes ‘divided by’, then 50 B 5 P 16 T 15 M 13 ...
Select the correct combination of mathematical signs to sequentially replace the * signs and to balance the given equation.
30 * 4 * 2 * 1 * 121
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