4621. The yellow colour in photochemical smog is due to the presence of_______?
✅ C. Nitrogen dioxide
Everyday Science MCQs – Page 232
4622. Which of the following atmospheric layers help in radio communication?
✅ A. Ionosphere
4623. The Continent Antarctica lies at the_____?
✅ A. South pole
4624. The study of cancer is called________?
✅ D. Oncology
4625. Which is the purest form of water?
✅ B. Rain water
4626. The PH of milk is _____?
✅ A. 6.5
4627. The blueness of the sky is mainly due to ________?
✅ B. The scattering of sunlight by air molecules
4628. Diamonds are made up almost entirely of what element?
✅ B. Carbon
4629. In general, wind speed of 10 -13 kph caused__?
✅ B. minor or no damage
4630. When water is filled in a bottle and is allowed to freeze, the bottle breaks because
✅ B. Water expands on freezing
4631. Which Organ is affected by trachoma?
✅ C. Eyes
4632. Afternoon rains in the equatorial region are the result of influences __?
✅ D. Convectional
4633. Hygrometer is used for measuring the _______?
✅ C. Humidity of air
4634. Spinach leaves are rich source of___
✅
4635. The Saturn rings discovered by______?
✅ C. Galileo
4636. Diamond is harder than Graphite because of______?
✅ B. Difference in crystalline Structure
4637. Lead ball falls through water more slowly than through air because _____?
✅ C. Of the viscous force in water
4638. Sound waves are ____ waves.
✅ C. Longitudinal
4639. The matter of our sun is in ___ state?
✅ D. Plasma
4640. The most abundant element in the Earth’s crust is _____?
✅ B. Oxygen