Chemical Properties of Carbon Compounds (Combustion, Oxidation, Addition, Substitution)Practice Questions & MCQs
Practice Chemical Properties of Carbon Compounds (Combustion, Oxidation, Addition, Substitution) questions from Carbon and its Compounds (Class 10 Science) - important MCQs with answers and step-by-step solutions. Solve the sample questions below, then practice the full set free on the RankByte app.
Chemical Properties of Carbon Compounds (Combustion, Oxidation, Addition, Substitution)Quiz - Solve & Score
Q1. Which gas turns lime water milky and is used to test for its presence?
- A.Carbon dioxide
- B.Hydrogen
- C.Oxygen
- D.Nitrogen
Answer: A. Carbon dioxide
Q2. Dry hydrogen chloride (HCl) gas is tested with dry blue litmus paper and then with moist blue litmus paper. What is observed?
- A.No change with dry litmus (stays blue); turns red with moist litmus
- B.Turns red with both dry and moist litmus
- C.No change with either dry or moist litmus
- D.Turns blue with both
Answer: A. No change with dry litmus (stays blue); turns red with moist litmus
Q3. What would be the electron dot structure of carbon dioxide which has the formula CO2?
- A.O=C=O
- B.O=C-O
- C.O-O=C
- D.O=C-O-O
Answer: A. O=C=O
The core fact here is - O=C=O. That fits the listed correct option directly - Correct electron dot structure for CO2. Looking at the others: option B) 'O=C-O' fails since Incorrect electron dot structure for CO2; option C) 'O-O=C' is incorrect: Incorrect electron dot structure for CO2. Hence the answer is A) O=C=O.
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