Chemistry
Give reasons for the following –
(i) almost 90% of all known compounds are organic in nature.
(ii) it is dangerous to burn methane in an insufficient supply of air.
Answer
(i) Due to unique nature of carbon atoms, which includes tetravalency, catenation and leading to formation of isomers, millions of organic compounds are known. Hence, almost 90% of all known compounds are organic in nature.
(ii) When methane burns in an insufficient supply of air, carbon monoxide is produced which is extremely poisonous for human beings as it cuts off the oxygen supply and forms carboxy haemoglobin in the blood, leading to death.
Related Questions
Compound 'X' is bubbled through bromine dissolved in CCl4 and the product formed is CH2Br – CH2Br.
i) Draw the structural formula of 'X' and state what type of reaction 'X' has undergone.
(ii) State your observation for the above reaction.
(iii) Name the compound formed when steam reacts with 'X' in the presence of an acid, eg. phosphoric acid.
(iv) What is the procedure for converting the product formed in (iii) above, back to 'X' ?
Choose the correct answer:
The functional group present in acetic acid is
A: Ketonic C = O
B: Hydroxyl - OH
C: Aldehydic – CHO
D: Carboxyl – COOHChoose the correct answer:
Unsaturated hydrocarbons undergo
A: substitution reaction
B: oxidation reaction
C: addition reaction
D: none of the aboveName a gaseous hydrocarbon commonly used for welding purposes.