ASDEO Test Everyday Science MCQs with Answers (Part 9: Questions 1–25)

Prepare for the ASDEO Test with these Everyday Science MCQs. These questions cover Biology, Chemistry, Physics, Earth Science, and Environmental Science.

1.

Which gas is essential for human respiration?

A) Nitrogen

B) Oxygen ✅

C) Carbon Dioxide

D) Hydrogen

Answer: B) Oxygen

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2.

What is the chemical formula of water?

A) CO₂

B) H₂O ✅

C) O₂

D) NaCl

Answer: B) H₂O

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3.

Which planet is known as the Red Planet?

A) Venus

B) Mars ✅

C) Jupiter

D) Saturn

Answer: B) Mars

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4.

Which organ pumps blood throughout the human body?

A) Brain

B) Liver

C) Heart ✅

D) Kidney

Answer: C) Heart

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5.

The boiling point of water at sea level is:

A) 90°C

B) 95°C

C) 100°C ✅

D) 110°C

Answer: C) 100°C

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6.

Which vitamin is mainly produced in the skin through sunlight exposure?

A) Vitamin A

B) Vitamin B

C) Vitamin C

D) Vitamin D ✅

Answer: D) Vitamin D

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7.

Which blood group is called the universal donor?

A) A+

B) B+

C) AB+

D) O− ✅

Answer: D) O−

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8.

Which is the largest organ of the human body?

A) Brain

B) Liver

C) Skin ✅

D) Heart

Answer: C) Skin

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9.

Plants prepare their food through:

A) Respiration

B) Digestion

C) Photosynthesis ✅

D) Fermentation

Answer: C) Photosynthesis

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10.

Which gas do plants absorb during photosynthesis?

A) Oxygen

B) Carbon Dioxide ✅

C) Nitrogen

D) Hydrogen

Answer: B) Carbon Dioxide

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11.

The SI unit of force is:

A) Joule

B) Watt

C) Newton ✅

D) Volt

Answer: C) Newton

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12.

Which metal is liquid at room temperature?

A) Iron

B) Copper

C) Mercury ✅

D) Zinc

Answer: C) Mercury

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13.

The nearest star to Earth is:

A) Sirius

B) Alpha Centauri

C) The Sun ✅

D) Polaris

Answer: C) The Sun

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14.

Which instrument is used to measure temperature?

A) Barometer

B) Thermometer ✅

C) Hygrometer

D) Ammeter

Answer: B) Thermometer

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15.

How many bones are there in an adult human body?

A) 196

B) 200

C) 206 ✅

D) 210

Answer: C) 206

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16.

Which planet is the largest in the Solar System?

A) Earth

B) Saturn

C) Jupiter ✅

D) Neptune

Answer: C) Jupiter

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17.

Which gas is most abundant in Earth's atmosphere?

A) Oxygen

B) Nitrogen ✅

C) Carbon Dioxide

D) Hydrogen

Answer: B) Nitrogen

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18.

Which vitamin helps in blood clotting?

A) Vitamin A

B) Vitamin C

C) Vitamin D

D) Vitamin K ✅

Answer: D) Vitamin K

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19.

The human brain is part of which body system?

A) Digestive System

B) Nervous System ✅

C) Respiratory System

D) Circulatory System

Answer: B) Nervous System

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20.

Which is the hardest natural substance?

A) Iron

B) Gold

C) Diamond ✅

D) Silver

Answer: C) Diamond

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21.

Which layer protects Earth from harmful ultraviolet rays?

A) Troposphere

B) Ozone Layer ✅

C) Stratosphere

D) Mesosphere

Answer: B) Ozone Layer

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22.

The process by which water changes into vapor is called:

A) Condensation

B) Evaporation ✅

C) Freezing

D) Melting

Answer: B) Evaporation

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23.

Which instrument measures atmospheric pressure?

A) Thermometer

B) Hygrometer

C) Barometer ✅

D) Speedometer

Answer: C) Barometer

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24.

Which vitamin is commonly associated with preventing scurvy?

A) Vitamin A

B) Vitamin B₁₂

C) Vitamin C ✅

D) Vitamin D

Answer: C) Vitamin C

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25.

What is the normal freezing point of water?

A) -10°C

B) 0°C ✅

C) 10°C

D) 32°C

Answer: B) 0°C

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End of Part 9 – Everyday Science MCQs (Questions 1–25)

Continue with Questions 26–50 in the next section to complete the Everyday Science MCQs.