Inorganic and organic chemistry

Written by Dr. Ayesha Nadeem (Chemistry)

ECAT · Chemistry · 10 questions

Name: ____________________ Date: ____________

What is the shape of the SF6 molecule?
- A Square planar
- B Tetrahedral
- C Octahedral
- D Trigonal bipyramidal
Which catalyst is used in the Haber process for making ammonia?
- A Nickel
- B Vanadium pentoxide
- C Iron
- D Platinum
Which reagent distinguishes an aldehyde from a ketone?
- A Tollens' reagent
- B Bromine water
- C Litmus paper
- D Lime water
According to Markovnikov's rule, the addition of HBr to propene gives mainly:
- A Propane
- B 1-bromopropane
- C 2-bromopropane
- D 1,2-dibromopropane
Which type of alkyl halide reacts fastest by the SN1 mechanism?
- A Primary
- B Methyl
- C Tertiary
- D Secondary
What is the product when ethene reacts with steam in the presence of an acid catalyst?
- A Ethane
- B Ethanol
- C Ethanal
- D Ethanoic acid
What is the hybridisation of sulphur in SF6?
- A sp3
- B sp2
- C sp3d
- D sp3d2
The general formula of the alkanes is:
- A CₙH₂ₙ₊₂
- B CₙHₙ
- C CₙH₂ₙ₋₂
- D CₙH₂ₙ
Which of these is an alkene?
- A C₂H₄
- B CH₄
- C C₂H₆
- D C₂H₂
The common name of sodium carbonate decahydrate is:
- A Baking soda
- B Table salt
- C Washing soda
- D Caustic soda

Answer key

1. C, 2. C, 3. A, 4. C, 5. C, 6. B, 7. D, 8. A, 9. A, 10. C

Sulphur has six bond pairs and no lone pairs, which gives an octahedral shape.
Finely divided iron is the catalyst in the Haber process. Vanadium pentoxide is used in the Contact process.
Aldehydes reduce Tollens' reagent to give a silver mirror. Ketones do not.
The hydrogen goes to the carbon that already has more hydrogens, so bromine ends up on the middle carbon.
A tertiary carbocation is the most stable, so tertiary halides react fastest by SN1.
Acid-catalysed hydration of ethene adds water across the double bond to give ethanol.
Six bond pairs need six hybrid orbitals, which use one s, three p and two d orbitals.
Alkanes are saturated hydrocarbons with this formula.
C₂H₄ (ethene) has a carbon to carbon double bond.
Na₂CO₃·10H₂O is washing soda.