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.
√? = 32% of 900 + 48% of 50
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Simplify-
x + 3(y + x – 2) – (x + y).
567-4824 ÷ 134 =? × 9
Find the value of the expression:
18 + 12 – 4 × [22 + 6 – 2 × (38 – 23)]- What will come in place of (?), in the given expression.
75% of 640 – 20% of 150 = ? 60 % of 640 - 57 × 2 - 1520 / 38 = ?
36 × 15 + 20% 1250 = ? + 296
Find the value of 16 x [(8 - 5) of 12 ÷ 4].
1885 ÷ 64.98 + 7.29 + ? = 69.09