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

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

(A) 353 m/s

(B) 345 m/s

(C) 343 m/s

(D) none of them

✅ Correct Answer: 343 m/s

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Source: This question is taken from the Everyday Science

💡 English word par Double-Click karein: Urdu meaning + pronunciation 🔊

The image formed in a compound microscope is_____________...?

(A) erect

(B) inverted

(C) sometimes erect, sometimes inverted

(D) none

✅ Correct Answer: inverted

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Source: This question is taken from the Everyday Science

💡 English word par Double-Click karein: Urdu meaning + pronunciation 🔊

The Sun is a __________...?

(A) Star

(B) Planet

(C) Asteroid

(D) Meteor

✅ Correct Answer: Star

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Source: This question is taken from the Everyday Science

💡 English word par Double-Click karein: Urdu meaning + pronunciation 🔊

The natural source of hydrocarbon is:___________...?

(A) Crude oil

(B) Biomass

(C) Coal

(D) Carbohydrates

✅ Correct Answer: Crude oil

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Source: This question is taken from the Everyday Science

💡 English word par Double-Click karein: Urdu meaning + pronunciation 🔊

The largest part of the human brain is ___________...?

(A) Medulla oblongata

(B) Cerebellum

(C) Cerebrum

(D) None of these

✅ Correct Answer: Cerebrum

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Source: This question is taken from the Everyday Science

💡 English word par Double-Click karein: Urdu meaning + pronunciation 🔊

The SI base unit for mass is_____________...?

(A) Gram

(B) Pound

(C) Kilogram

(D) Ounce

✅ Correct Answer: Kilogram

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Source: This question is taken from the Everyday Science

💡 English word par Double-Click karein: Urdu meaning + pronunciation 🔊

The speed of sound in air is ______...?

(A) 332 m/s

(B) 345 m/s

(C) 333 m/s

(D) 354 m/s

✅ Correct Answer: 332 m/s

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Source: This question is taken from the Everyday Science

💡 English word par Double-Click karein: Urdu meaning + pronunciation 🔊

Most soluble in water is:__________...?

(A) Camphor

(B) Sulphur

(C) Common salt

(D) Sugar

✅ Correct Answer: Sugar

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Source: This question is taken from the Everyday Science

💡 English word par Double-Click karein: Urdu meaning + pronunciation 🔊

The speed of the sound in air is ______...?

(A) 143 m/s

(B) 243 m/s

(C) 343 m/s

(D) 443 m/s

✅ Correct Answer: 343 m/s

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Source: This question is taken from the Everyday Science

💡 English word par Double-Click karein: Urdu meaning + pronunciation 🔊

Dry ice is ___________...?

(A) Methane hydrate

(B) Liquid Nitrogen

(C) Solid Carbon dioxide

(D) Frozen Water

✅ Correct Answer: Solid Carbon dioxide

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Source: This question is taken from the Everyday Science

💡 English word par Double-Click karein: Urdu meaning + pronunciation 🔊

The two factors that affect the speed of sound in air are ______...?

(A) Humidity and volume of the air

(B) Temperature and mass of the air

(C) Volume and mass of the air

(D) Temperature and humidity of the air

✅ Correct Answer: Temperature and humidity of the air

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Source: This question is taken from the Everyday Science

💡 English word par Double-Click karein: Urdu meaning + pronunciation 🔊

Virus is__________...?

(A) unicellular

(B) multicellular

(C) acellular

(D) none of these

✅ Correct Answer: acellular

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Source: This question is taken from the Everyday Science

💡 English word par Double-Click karein: Urdu meaning + pronunciation 🔊

The type of glass used in making lenses and prism is___________...?

(A) Pyrex glass

(B) jena glass

(C) Flintglass

(D) Soft glass

✅ Correct Answer: Flintglass

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Source: This question is taken from the Everyday Science

💡 English word par Double-Click karein: Urdu meaning + pronunciation 🔊

Radon is___________...?

(A) germon radio

(B) radio active gas

(C) artificial fibre

(D) an explosive

✅ Correct Answer: radio active gas

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Source: This question is taken from the Everyday Science

💡 English word par Double-Click karein: Urdu meaning + pronunciation 🔊

Microphone converts sound energy into ___________...?

(A) Microwaves

(B) Electrical signals

(C) Optical Signals

(D) Heat energy

✅ Correct Answer: Electrical signals

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Source: This question is taken from the Everyday Science

💡 English word par Double-Click karein: Urdu meaning + pronunciation 🔊

Main constituent in air is ___________...?

(A) Oxygen

(B) Nitrogen

(C) Hydrogen

(D) Helium

✅ Correct Answer: Nitrogen

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Source: This question is taken from the Everyday Science

💡 English word par Double-Click karein: Urdu meaning + pronunciation 🔊

The energy stored in a dam is___________...?

(A) Kinetic energy

(B) Electrical energy

(C) Potential energy

(D) None of these

✅ Correct Answer: Potential energy

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Source: This question is taken from the Everyday Science

💡 English word par Double-Click karein: Urdu meaning + pronunciation 🔊

An atom is_____________...?

(A) smallest indivisible particle in an element

(B) smallest particle of an element which can undergo a chemical reaction

(C) building block of an element

(D) always smaller than molecule

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

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Source: This question is taken from the Everyday Science

💡 English word par Double-Click karein: Urdu meaning + pronunciation 🔊

DNA is _____________...?

(A) Acetic Acid

(B) A class of nucleic acids

(C) Citric Acid

(D) None of these

✅ Correct Answer: A class of nucleic acids

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Source: This question is taken from the Everyday Science

💡 English word par Double-Click karein: Urdu meaning + pronunciation 🔊

The heaviest man made element found so for is__________...?

(A) Promethium

(B) Ununoctium

(C) Francium

(D) Technetium

✅ Correct Answer: Ununoctium

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Source: This question is taken from the Everyday Science

💡 English word par Double-Click karein: Urdu meaning + pronunciation 🔊

The most densest substance on the Earth is __________....?

(A) Platinum

(B) Copper

(C) Steel

(D) Osmium

✅ Correct Answer: Osmium

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Source: This question is taken from the Everyday Science

💡 English word par Double-Click karein: Urdu meaning + pronunciation 🔊

Speed of sound in air is _______km/h...?

(A) 1347

(B) 243

(C) 1235

(D) 1495

✅ Correct Answer: 1235

Comments

Source: This question is taken from the Everyday Science

💡 English word par Double-Click karein: Urdu meaning + pronunciation 🔊

The element used in lead pencils is__________...?

(A) Zinc

(B) Lead

(C) Carbon

(D) Tin

✅ Correct Answer: Carbon

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Source: This question is taken from the Everyday Science

💡 English word par Double-Click karein: Urdu meaning + pronunciation 🔊

Mass of Earth is___________...?

(A) 5.972 × 1024 kg.

(B) 6.972 × 1024 kg

(C) 7.972 × 1024 kg

(D) 8.972 × 1024 kg

✅ Correct Answer: 5.972 × 1024 kg.

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Source: This question is taken from the Everyday Science

💡 English word par Double-Click karein: Urdu meaning + pronunciation 🔊

1 yard =___________...?

(A) 3 feet

(B) 6 feet

(C) 2.4 feet

(D) 12 feet

✅ Correct Answer: 3 feet

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Source: This question is taken from the Everyday Science

💡 English word par Double-Click karein: Urdu meaning + pronunciation 🔊

In blood, the percentage of water is___________...?

(A) 75%

(B) 85%

(C) 90%

(D) 95%

✅ Correct Answer: 90%

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Source: This question is taken from the Everyday Science

💡 English word par Double-Click karein: Urdu meaning + pronunciation 🔊

The amount of energy required by the children of age between one to three years is___________...?

(A) 300 k Calories

(B) 600 k Calories

(C) 900 k Calories

(D) 1200 k Calories

✅ Correct Answer: 1200 k Calories

Comments

Source: This question is taken from the Everyday Science

💡 English word par Double-Click karein: Urdu meaning + pronunciation 🔊

The time taken by Sun to revolve around the center of our galaxy is___________...?

(A) 150 million years

(B) 250 million years

(C) 300 millon years

(D) 350 millon years

✅ Correct Answer: 250 million years

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Source: This question is taken from the Everyday Science

💡 English word par Double-Click karein: Urdu meaning + pronunciation 🔊

The speed of light is __________...?

(A) 280,000 km/s

(B) 300,000 km/s

(C) 320,000 km/s

(D) none of these

✅ Correct Answer: 300,000 km/s

Comments

Source: This question is taken from the Everyday Science

💡 English word par Double-Click karein: Urdu meaning + pronunciation 🔊

The density of Air is_____________...?

(A) 0.225 kg/m3

(B) 1.025 kg/m3

(C) 1.225 kg/m3

(D) 1.425 kg/m3

✅ Correct Answer: 1.225 kg/m3

Comments

Source: This question is taken from the Everyday Science

💡 English word par Double-Click karein: Urdu meaning + pronunciation 🔊

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

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