Methanol is toxic because it is metabolized to: MCQ with Answer and Explanation

Explanation:
Sulphuric acid is used in the production of fertilizers, chemicals, petroleum refining, etc., earning the title. It's not the strongest acid but the most industrially important.

Explanation:
Niels Bohr in 1913 proposed the planetary model where electrons revolve in certain allowed circular orbits without radiating energy, with quantized angular momentum. Rutherford proposed the nuclear model but did not specify quantized orbits. Thomson gave plum pudding. Chadwick discovered neutron.

Explanation:
Element 117 (tennessine, Ts) is a halogen in Group 17, Period 7. The modern periodic table has 7 periods and 18 groups. Halogens are in Group 17. Period 7 starts with Fr (87) and ends with Og (118). Ts is two places before Og. Exam trick: For atomic numbers after 86 (Rn), use period 7. Group 17 elements are F, Cl, Br, I, At, Ts.