Two large organic molecules are shown. Molecule 1 contains a nitrile group, an ether oxygen, a tertiary amine, fluorine, and
Paper Type: paper-1a
M25-CHEM-HL-TZ3-P1A-Q18
What is the identity of the alcohol with the molecular formula \( C_4H_9OH \) with four peaks in the ratio
M25-CHEM-HL-TZ3-P1A-Q19
How many chiral centres are there in the following molecule? The molecule is a straight-chain sugar derivative: \( HOCH_2-CH(OH)-CH(OH)-C(=O)-CH_2OH \).
M25-CHEM-HL-TZ3-P1A-Q20
Which statement about an exothermic reaction is correct?
M25-CHEM-HL-TZ3-P1A-Q15
Which compounds contain an atom in a +3 oxidation state? I. \( NO_2^- \) II. \( FeCl_3 \) III. \(
M25-CHEM-HL-TZ3-P1A-Q16
Which statement correctly explains the violet colour of the complex ion \( [Cu(NH_3)_4(H_2O)_2]^{2+} \) formed when copper(II) sulfate reacts with
M25-CHEM-HL-TZ3-P1A-Q11
Which answer shows the correct order of metallic bond strength from strongest to weakest?
M25-CHEM-HL-TZ3-P1A-Q12
Which of these elements is in the f-block of the periodic table?
M25-CHEM-HL-TZ3-P1A-Q13
What is the electron configuration of an atom of Cu?
M25-CHEM-HL-TZ3-P1A-Q14
Which pair of elements would react with each other the least vigorously?