Question
What is the area (in cm²) of a
square inscribed in a circle with a radius of 10√2 cm?Solution
ATQ, Diameter of the circle = 10√2 × 2 = 20√2 cm So, length of diagonal of the square = 20√2 cm So, length of each side of the square = 20√2 ÷ √2 = 20 cm So, area of the square = 20 × 20 = 400 cm²
Which of the following organic compounds undergo nucleophilic substitution reaction most easily?
The process of converting a solid directly into its vapor is called:
What happens to a liquid, when the vapour pressure equals the atmospheric pressure?
In the synthesis of aspirin (acetylsalicylic acid) from salicylic acid, which reagent is used?
Which of the following statement is/are true?
I. Metal oxides are acidic in nature
II. Non-metallic oxides are basic in nature
Aromatic hydrocarbons contain at least how many benzene rings in their molecules?
Which gas is produced due to incomplete combustion of fuel?
_______ is a common name of ethanoic acid.
_____ is used for making chemical apparatus like beakers, flasks, etc.
The Polymerisation of which of the following is used in the manufacturing of polythene in industry?
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