speed of sound in dry air at 20 °C is___________...? Mcqs

✅ Correct Answer: 343 m/s

✅ Correct Answer: Karman line

✅ Correct Answer: Temperature and humidity of the air

✅ Correct Answer: radio active gas

✅ Correct Answer: smallest particle of an element which can undergo a chemical reaction

✅ Correct Answer: Osmium

✅ Correct Answer: Star

✅ Correct Answer: Potential energy

✅ Correct Answer: Carbon

✅ Correct Answer: 300,000 km/s

✅ Correct Answer: acellular

✅ Correct Answer: 1.225 kg/m3

✅ Correct Answer: inverted

✅ Correct Answer: Flintglass

✅ Correct Answer: 332 m/s

✅ Correct Answer: Solid Carbon dioxide

✅ Correct Answer: Ununoctium

✅ Correct Answer: 5.972 × 1024 kg.

✅ Correct Answer: Sugar

✅ Correct Answer: Kilogram

✅ Correct Answer: Electrical signals

✅ Correct Answer: Crude oil

✅ Correct Answer: 90%

✅ Correct Answer: 3 feet

✅ Correct Answer: 343 m/s

✅ Correct Answer: 250 million years

✅ Correct Answer: 1235

✅ Correct Answer: Nitrogen

✅ Correct Answer: A class of nucleic acids

✅ Correct Answer: Cerebrum

✅ Correct Answer: 1200 k Calories