Question
What two acids are mixed to prepare Aqua Regia, used by
goldsmiths?Solution
Aqua Regia, a potent mixture used to dissolve gold, is composed of Nitric Acid and Hydrochloric Acid. This combination creates a highly corrosive solution capable of dissolving gold and platinum, which are otherwise resistant to most chemical attacks.
- What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)
(2879.79 ÷ 24.07) × (√624.77 + √120.88) - 35% of 1199.85 = ?
(1011 × 4.465 + 1012 × 0.3535) ÷ (160 × 10⁵) = 10? ÷ 2
...30.05% of 360.05 – 25.15% of 99.99 × 3.02 = ?
(245.98 + 198.12) ÷ (11.032 - 9.99) × 21.12 = ?2 - 16.12
Solve the given equation for ?. Find the approximate value.
[(49.88% of 320.11) × (34.85% of 460.24)] ÷ √783.94 = ?
Which of the following options is the closest approximate value which will come in place of question mark (?) in the following equation?
26.52 ×...
(660.05) ÷ 120.04% of (55.022/2.24) = (? ÷ 10.02)
? = 41.92% of (34.92 x 40.42) + 29.78% of 399.84
? = 41.92% of 49.96% of (45.07 1.97 – 4.98 2.03 )
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