📚NCERT Questions
1,675 solved questions with detailed explanations
What is the stability order for alkyl free radicals?
What is the general nature of metal oxides?
Bleaching powder is produced by the action of chlorine on:
Why does the solubility of alcohols in water decrease with an increase in the size of the alkyl group?
Which of the following numbers, when expressed in scientific notation, correctly represents 100 with three significant figures?
Metals produce a sound when struck on a hard surface. This property is known as:
To raise the temperature of 60.0 g of aluminium from 35°C to 55°C, how much heat (in kJ) is required? Molar heat capacity of Al is 24 J mol⁻¹ K⁻¹ (Molar mass of Al = 27 g/mol).
The longest wavelength doublet absorption transition is observed at 589 nm and 589.6 nm. Calculate the energy difference between the two excited states. (h = 6.626 x 10⁻³⁴ J s, c = 3.00 x 10⁸ m s⁻¹)
Why is aluminium, despite being a highly reactive metal, used to make utensils for cooking?
When baking soda (sodium hydrogencarbonate) is heated during cooking, which gas is produced that makes bread or cake soft and spongy?