Question
Consider the two statements given below, where one is
labeled as Assertion (A) and the other as Reason (R): Assertion (A): The mixture of salt and ice achieves a temperature below 0°C. Reason (R): Addition of salt raises the melting point of ice. Which one of the following options is correct regarding these two statements?Solution
• When salt (sodium chloride) is mixed with ice (solid water), the mixture can attain a temperature lower than 0°C. Thus, Assertion (A) is true. • However, the addition of salt does not raise the melting point of ice; rather, it lowers the freezing point of water, meaning that ice melts at a lower temperature than usual. Thus, Reason (R) is false. Therefore, the correct answer is (c) A is true but R is false.
92, 51, 21, 13.5, x, 4.25
find the value of (10x + x -5)?
9060 5685 3488 2157 1428 1077
1 1 8 4 27 9 81
...21 48 173 516 1245 2576 ?
...20 60 180 540 ? 4860
...90 211 67 236 ? 265
...43 ? 45 39 47 37
...D irection: Which of the following will replace ‘?’ in the following series
460, 462, ‘?’, 467.5, 470.97
...3456 1728 2592 6485 22680 102060
...111 113 117 120 ? 133
