Exams › GATE › Technical

Pre-cursors to photochemical oxidants are

1. NOx, VOCs and sunlight
2. SO2, CO2 and sunlight
3. H2S, CO and sunlight
4. SO2, NH3 and sunlight

Correct answer: NOx, VOCs and sunlight

Solution

Photochemical oxidants are formed when nitrogen oxides (NOx) and volatile organic compounds (VOCs) react in the presence of sunlight, leading to the creation of harmful pollutants like ozone.

Related GATE Technical questions

• In shear design of an RC beam, other than the allowable shear strength of concrete (τ_c), there is also an additional check suggested in IS 456-2000 with respect to the maximum permissible shear stress (τ_cmax). The check for τ_cmax is required to take care of
• Bull's trench kiln is used in the manufacturing of
• The compound which is largely responsible for initial setting and early strength gain of Ordinary Portland Cement is
• In the consolidated undrained triaxial test on a saturated soil sample, the pore water pressure is zero
• A fine grained soil is found to be plastic in the water content range of 26-48%. As per Indian Standard Classification System, the soil is classified as
• A vertical cut is to be made in a soil mass having cohesion c, angle of internal friction φ, and unit weight γ. Considering Kₐ and Kₚ as the coefficients of active and passive earth pressures, respectively, the maximum depth of unsupported excavation is

⚔️ Practice GATE Technical free + battle 1v1 →