Goa Board (GBSHSE) - Class 9

Physics, Chemistry & Biology Fundamentals question bank (Science (Class 9))

Practice 531 free Goa Board (GBSHSE) - Class 9 Science (Class 9) - Physics, Chemistry & Biology Fundamentals questions with answers and step-by-step solutions.

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Q1.

Carbon & its Compounds: What structural feature of carbon is explored in 'Matter in Our Surroundings and Is Matter Around Us Pure?'?

(A)
Tetravalency and catenation forming covalent bonds (Matter in Our Surroundings and Is Matter Around Us Pure?)
(B)
Electrovalent ionic bonding only
(C)
Inability to form chains
(D)
None of these
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Q2.

Life Processes (Nutrition & Respiration): In 'Matter in Our Surroundings and Is Matter Around Us Pure?', the breakdown of pyruvate in the presence of oxygen takes place in:

(A)
Mitochondria releasing $\text{CO}_2$, $\text{H}_2\text{O}$ and 36-38 ATP (Matter in Our Surroundings and Is Matter Around Us Pure?)
(B)
Cytoplasm producing ethanol
(C)
Ribosome only
(D)
None of these
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