Question
Naphthalene balls, commonly used as a pest repellent,
are derived from which source?Solution
Naphthalene balls are made from coal tar and are used as insecticides and pest repellents, especially against moths and cockroaches. The chemical formula of naphthalene is C₁₀H₈.
Find the simplified value of the given expression:
(5 + 13 of 7 - 5.25 of 8 + 63) ÷ 18
What is the total amount spent on Advertising and Training combined?
The angle between the planes x − y + z = 1 and 2x + y − 3z = 5 is:
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If a line has direction ratios 2, -1, -2, determine its direction cosines.
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In a triangle ABC, the sides are AB = 15 cm, BC = 20 cm, and AC = 25 cm. Find the area of the triangle using Heron’s formula.
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A container has 80 liters of a mixture of milk and water, with 60% milk. If 10 liters of water are added, what will be the new percentage of milk in th...
A regular hexagon has a side length of 6 units. What is the area of the hexagon?
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