📚NCERT Questions

Which of the following reagents are used to test for reducing sugars?

Which of the following reactions is a metal displacement redox reaction?

Calculate the oxidation number of nitrogen in the nitrate ion, NO3-.

Diabetes is a condition related to the improper secretion of which hormone?

Tooth decay starts when the pH of the mouth falls below:

What is the primary stabilizing force for the α-helix and β-pleated sheet structures in proteins?

The reaction 2H₂O(l) + 2F₂(g) → 4HF(aq) + O₂(g) is an example of which type of redox reaction?

For a chemical reaction involving gases at constant pressure and temperature, what is the relationship between ΔH and ΔU?

If the position of an electron is measured with an accuracy of 0.002 nm, calculate the uncertainty in its momentum. (h = 6.626 x 10⁻³⁴ J s)

Which purification technique is based on the principle that some solid substances change directly from solid to vapor state upon heating?