1.Which gas do plants take in from the air for photosynthesis?
- A.Oxygen
- B.Carbon dioxide
- C.Nitrogen
- D.Hydrogen
Show answer
Carbon dioxide
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General Science
Plants, planets and the human cell — 5 questions
Science5 questionswith answersQuestions in English
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2.What is the chemical formula for water?
- A.CO2
- B.H2O
- C.NaCl
- D.O2
Show answer
H2O
3.Which planet is closest to the Sun?
- A.Venus
- B.Earth
- C.Mercury
- D.Mars
Show answer
Mercury
4.Which part of an animal cell holds most of its DNA?
- A.Nucleus
- B.Cell membrane
- C.Ribosome
- D.Vacuole
Show answer
Nucleus
5.At sea level, water boils at…
- A.90 °C
- B.100 °C
- C.110 °C
- D.120 °C
Show answer
100 °C
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