Hydrogen peroxide is used as a bleaching agent because it:
A. Dehydrates the cloth
B. Is a strong oxidizing agent
C. Absorbs light
D. Is a strong acid
Answer: Option B
Solution (By JKSSB Mock Tests)
H₂O₂ acts as an oxidizing agent, breaking down colored organic compounds into colorless products. It bleaches hair, textiles, and paper. It also acts as a disinfectant. It decomposes to water and oxygen, leaving no harmful residue, making it environmentally friendly.
Explanation:
Niels Bohr proposed his model in 1913 to overcome the defects of Rutherford's model. He stated that electrons revolve around the nucleus in specific, discrete circular orbits (shells) with fixed energy, and they do not radiate energy while in these orbits, explaining atomic stability.
Explanation:
Radioactive decay is a first-order process because the rate of decay is proportional to the number of radioactive nuclei present. Half-life is constant, independent of initial amount.
Explanation:
Nitric acid (HNO₃) was called aqua fortis (strong water) due to its ability to dissolve metals like silver (except gold). Oil of vitriol is H₂SO₄; muriatic acid is HCl.
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