Which structure represents an isomer of butane?

5070_s20_qp_12

MCQ

2020

Paper 1, Variant 2

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An organic compound has the empirical formula CH2O. Which row shows a possible correct name and structure for this compound?

5070_s22_qp_12

MCQ

2022

Paper 1, Variant 2

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The structures of three compounds, W, X and Y, are shown...

5070_s23_qp_11

MCQ

2023

Paper 1, Variant 1

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Hexan-3-ol is an alcohol. CH3 CH2 CH OH CH2 CH2 CH3 hexan-3-ol How many molecules of oxygen are needed for the complete combustion of one molecule of hexan-3-ol?

5070_s23_qp_11

MCQ

2023

Paper 1, Variant 1

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What is the structural formula of propyl methanoate?

5070_s23_qp_12

MCQ

2023

Paper 1, Variant 2

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Substance X, molecular formula C4H8, does not react with hydrogen. What is the structural formula of X?

5070_w09_qp_1

MCQ

2009

Paper 1, Variant 0

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The structural formula of butenedioic acid is shown...

5070_w09_qp_1

MCQ

2009

Paper 1, Variant 0

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The diagram shows the molecule ethyl propanoate. C O O CH3 CH2 CH2 CH3 How many bonding pairs of electrons are there in the molecule?

5070_w10_qp_11

MCQ

2010

Paper 1, Variant 1

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Five structures are shown...

5070_w10_qp_11

MCQ

2010

Paper 1, Variant 1

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The diagram shows the molecule ethyl propanoate. C O O CH3 CH2 CH2 CH3 How many bonding pairs of electrons are there in the molecule?

5070_w10_qp_12

MCQ

2010

Paper 1, Variant 2

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