4501. The chemical name of quartz is:
✅ B. Silicon Dioxide
Everyday Science MCQs – Page 226
4502. Brass gets discoloured in air because of the presence of which of the following gases in air ___ ?
✅ D. Hydrogen sulphide
4503. What kind of weathering takes place on the valley side above the surface of the glacier?
✅ D. Frost shattering
4504. Water vapor is ____?
✅ B. A gas
4505. speed of sound in dry air at 20 °C is______?
✅ C. 343 m/s
4506. Which of the following is commonly called a polyamide ?
✅
4507. For water purification, we use?
✅ B. Chlorine
4508. What is the weight of the average human brain?
✅ B. 1.2 to 1.4 Kg
4509. Tesla is the unit of__________?
✅ B. Magnetic Field Strength
4510. A light year is a unit of ?
✅ C. Length
4511. In a typical H-R diagram, stars are graphed by these two characteristics:
✅ B. Temperature and luminosity
4512. The main function of the kidney is _______?
✅ C. To remove waste product from the body
4513. The biggest planet in solar system is ______ and having _____ moons?
✅ A. Jupiter, Seventy-nine
4514. A colloidal system in which a liquid is dispersed into a liquid is called____?
✅ C. Emulsion
4515. ______ soil is also called Regur soil?
✅ C. Black
4516. One of the countries through which equator passes is______?
✅ B. Kenya
4517. Japan is called ‘Land of the rising sun’ because:
✅ C. Japan being the Eastern most country in the world, it has the earliest sunrise
4518. kilohertz (kHz) is a unit which measures?
✅ A. Electromagnetic radio wave frequencies
4519. Liver uses which vitamin for creating new Red Blood cells?
✅ B. B12
4520. Phosphorus is an essential component of one of the following biological molecules:
✅ A. Nucleic acids